Operating manual ProLab 4000 pH/ISE/Conductivity measuring instrument with automatic sensor recognition and electronic access control ba75646e02 01/2010 DRAFT January 28, 2010 2:18 pm
Accuracy when going to press Warranty The use of advanced technology and the high quality standard of our instruments are the result of a continuous development. This may result in differences between this operating manual and your instrument. Also, we cannot guarantee that there are absolutely no errors in this manual. Therefore, we are sure you will understand that we cannot accept any legal claims resulting from the data, figures or descriptions.
ProLab 4000 KONFORMITÄTSERKLÄRUNG DECLARATION OF CONFORMITY DÉCLARATION DE CONFORMITÉ Wir erklären in alleiniger Verantwortung, dass das Produkt We declare under our sole responsibility that the product Nous déclarons sous notre seule responsabilité que le produit pH-/ISE-/ LeitfähigkeitsMessgerät ProLab 4000 pH / ISE / conductivity measuring instrument ProLab 4000 Appareil de mesure pour pH/ISE/ conductivité ProLab 4000 auf das sich diese Erklärung bezieht, übereinstimmt mit den Angaben im Kapitel
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ProLab 4000 Contents ProLab 4000 - Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1.1 1.2 1.3 1.4 1.5 1.6 2 3.7 01/2010 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting the power pack. . . . . . . . . . . . . . . . . . . . . . . Switching on the ProLab 4000 . . . . . . . . . . . . . . . . . . . . Connecting the USB mouse . . . . . . .
Contents ProLab 4000 5 Access to the meter . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 5.1 5.2 5.3 5.4 5.5 5.6 6 Switch the meter on and off . . . . . . . . . . . . . . . . . . . . . . . Login as a user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Password for login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3.1 Changing the password . . . . . . . . . . . . . . . . . . . 5.3.2 Assigning a password. . . . . . . . . . . . . . . . . . . . . 5.3.
ProLab 4000 Contents 8 ORP voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 8.1 8.2 9 General information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Measuring the ORP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2.1 Preparatory activities . . . . . . . . . . . . . . . . . . . . . 8.2.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2.3 Measuring the relative ORP . . . . . . . . . . . . . . . . 8.2.4 Measurement settings . .
Contents ProLab 4000 10.2.10 Selecting and determining the nonlinear temperature compensation TC nLin4 ..... 10.2.11 Switching off the temperature compensation (TC off) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.3 Determining the cell constant (calibration in control standard) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.3.1 Determining the cell constant (calibration) . . . . 10.3.2 Calibration settings and calibration data . . . . . .
ProLab 4000 Contents 13.3 Data backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 13.3.1 Data backup by the administrator . . . . . . . . . . 180 13.3.2 Viewing backed up data . . . . . . . . . . . . . . . . . . 181 14 Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182 14.1 14.2 14.3 14.4 Viewing a configuration . . . . . . . . . . . . . . . . . . . . . . . . . Creating a new configuration . . . . . . . . . . . . . . . . . . . .
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ProLab 4000 Overview 1 Overview 1.1 General features The ProLab 4000 precision meter enables you to perform pH, ORP, conductivity and ion-selective measurements rapidly and reliably. Das ProLab 4000 provides the maximum degree of ease of use, reliability and, above all, measuring certainty for all applications. The proven calibration procedures, and stability control function (SC) and the sensor recognition function support your work with the meter.
Overview ProLab 4000 1.2 Keypad 1 ABC 2 DEF 3 GHI 4 JKL 5 MNO 6 PQRS 7 TUV 8 WXYZ 9 _ . 0 MODE CAL SC STO RCL PRINT OK ESC DEL Keys with dedicated functions Keys with dedicated functions are labeled on the meter. In this operating manual, they are identified by the key labeling, bold letters and angle brackets <..> . Keys with changing functions (softkeys) Keys with changing functions are not labeled; the currently assigned function is shown on the display instead.
ProLab 4000 Overview OK Confirm entries Return to higher menu level / Cancel inputs Store a measured value Open the menu for stored measured values Print or output data to an interface (serial RS232, USB-A (USB Host) or USB-B USB Device)) ESC STO RCL PRINT Alphanumeric keypad The keys of the alphanumeric keypad are used to enter numerals (<0...9>), letters () and characters (<- .>).
Overview ProLab 4000 1.3 Display The graphic color display can display three measured parameters and the current temperature value for each measured parameter at the same time.The illumination enables to read the display even in the darkness.
ProLab 4000 Overview 1.4 Socket field Cond Probe TP 2 pH/U/ISE Probe 2 Ref 2 2 3 pH/U/ISE Probe 1 TP 1 USB Device Ref 1 USB Host 4 1 6 9V/DC input 11 9 7 5 RS232 8 10 Connections: 1 Conductivity measuring cell (Cond Probe) 2 pH/ISE/ORP electrode (pH/U/ISE Probe 2) 3 Reference electrode (Ref 2) 4 Temperature sensor (TP 2) 5 pH/ISE/ORP electrode (pH/U/ISE Probe 1) 6 Reference electrode (Ref 1) 7 Temperature sensor (TP 1) 8 USB Host interface, e.g.
Overview ProLab 4000 1.5 Automatic sensor recognition The automatic sensor recognition function enables z to operate a sensor with different meters without recalibrating z to operate different sensors with one meter without recalibrating z to assign measurement data to a sensor – measurement datasets are always downloaded to the interface with the sensor type and sensor series number. – measurement datasets are always stored together with the sensor type and sensor series number.
ProLab 4000 Overview 1.5.1 ID sensors SI Analytics GmbH ID sensors support the automatic sensor recognition function. Their sensor designation has the addition "ID", e.g. BlueLine A 161 1M-BNC-ID electrode. Note Information on available ID sensors is given on the Internet or directly by SI Analytics. ID sensors connected to the ProLab 4000 meter can be recognized by the ID sensor symbol on the display.
Overview ProLab 4000 1.5.
ProLab 4000 Overview 1.6 Electronic access control The ProLab 4000 always documents measurement and calibration data together with a user name. Thus all measurement data is assigned to the user, in compliance with GLP. The user name is easily and safely transmitted to the ProLab 4000 via an electronic key. Each electronic key in the form of a keyring pendant contains a key number and a user name. The key number and user name are read by the meter via a contactless radio data connection.
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ProLab 4000 Safety 2 Safety This operating manual contains basic instructions that you must follow during the commissioning, operation and maintenance of the meter. Consequently, all responsible personnel must read this operating manual before working with the measuring system. The operating manual must always be available within the vicinity of the meter. Target group Safety instructions The meter was developed for work in the laboratory.
Safety ProLab 4000 2.2 General safety instructions This instrument is built and inspected according to the relevant guidelines and norms for electronic measuring instruments (see page 195). It left the factory in a safe and secure technical condition. Function and operational safety The smooth functioning and operational safety of the meter can only be guaranteed if the generally applicable safety measures and the specific safety instructions in this operating manual are followed during operation.
ProLab 4000 Commissioning 3 Commissioning 3.1 Scope of delivery z ProLab 4000 laboratory meter z Power pack z 4 batteries 1.
Commissioning ProLab 4000 3.2 Initial commissioning Perform the following activities: z Insert the batteries (see page 187) z Connect the power pack (see page 24). z Switch on ProLab 4000 (see page 25). z Connect the USB mouse (see page 26) z Setting the language (see page 58) z Set the date and time (see page 59) z Set up the access authorization for user keys (see page 53) z Connect the sensor (see page 27). 3.3 Connecting the power pack The power pack supplies the meter with low voltage (9 V DC).
ProLab 4000 Commissioning 3.4 Switching on the ProLab 4000 The ProLab 4000 indicates the Standby display. 1 Switch the meter on with . 2 The meter switches itself on. The Login dialog box is displayed. Note The default password for the administrator is "00001". For your safety, change it as soon as possible (see page 49).
Commissioning ProLab 4000 3.5 Connecting the USB mouse You can connect the USB mouse included in the scope of delivery to the USB-A USB Host interface of the ProLab 4000. Thus the ProLab 4000 can be operated like a PC. 3.6 Connecting sensors If an ID sensor is connected, the ProLab 4000 recognizes the sensor type, sensor name and series number of the sensor. If the ID sensor cannot be automatically assigned to a channel, the Automatic sensor recognition window prompts the manual assignment.
ProLab 4000 Commissioning 3.6.1 ID sensor with temperature sensor ID sensor without temperature sensor Connecting an ID sensor 1 Connect the temperature sensor of the ID sensor to the socket. 2 Connect the ID sensor to the socket of the meter. The sensor is automatically assigned. The channel to which is was assigned shows the measurement data of the sensor. 1 Connect the ID sensor to the socket of the meter.
Commissioning ProLab 4000 3.6.2 Connecting a non ID sensor 1 Connect the sensor and if necessary, temperature sensor to a socket. The relevant channel shows the measurement data of the sensor. 2 Prior to measuring: Calibrate the sensor. 3.7 Connecting optional accessories The ProLab 4000 has several interfaces to connect accessories to. To connect a device, find the suitable interface in the following table.
ProLab 4000 Commissioning 3.7.1 RS232 interface (serial port) PC and printer can be connected via the RS232 interface. Data that is transmitted to the interface with can be printed out with a printer or received with a terminal program if a PC is connected. Operation with RS232 Connect the interface of the ProLab 4000 to the devices using the Z390 (PC) or Z893 (external USB printer Z890) cable. Set up the following transmission data on the PC/printer: Baud rate selectable between: 1200 ...
Commissioning ProLab 4000 3.7.2 USB-B interface (USB Device) You can connect a PC to the meter via the USB-B interface(USB Device). Data that is transmitted to the interface with can be printed out with a printer or received with a terminal program if a PC is connected. The USB driver of the enclosed CD-ROM must be installed for the interface to be available for the PC.
ProLab 4000 Commissioning 3.7.
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ProLab 4000 Operating principles 4 Operating principles This section contains basic information on the operation of the ProLab 4000. 4.1 Mouse Keys Operating and display elements The ProLab 4000 is designed for mouse operation. With a mouse click you can carry out all functions except for the entry of characters and numerals. This means the ProLab 4000 can be operated as easily as a software on the PC.
Operating principles Display ProLab 4000 Depending on the operating situation, the color display shows measurement data, calibration steps, setting dialogs or stored data.
ProLab 4000 Operating principles In the main menu, there are sensor independent functions and settings: z Manage configurations (File ) (see page 182) z Store current measurement data, and display and edit stored measurement and calibration data (Memory) (see page 153) z System settings such as language, date, time, color assignment, interface settings and general measurement settings (System) (see page 56) z Select the measurement data to be displayed (Window) z Manage user data (User ) (see page 163) b
Operating principles Channel (2) Menu for a measured parameter (3) ProLab 4000 In the measured value display, for each connected sensor you can see a channel with special menus for the displayed measured parameter (Measuring, Calibration).
ProLab 4000 Operating principles 4.2 Files File system With the ProLab 4000 you can store data in files just like using a PC. Different data is stored in an extra file, such as z manually stored measured values z automatically stored measured values z recorder data A complete overview of the data that can be stored and the corresponding file formats is given in chapter 11 MEMORY (see page 153). File system The ProLab 4000 creates an individual directory with the user name for each registered user.
Operating principles ProLab 4000 4.3 Entry of numerals, letters and characters Numerals, letters, punctuation marks and special characters are entered on the alphanumeric keypad on the meter or an external keyboard. Entering characters is required in operating situations such as the following: z Entry of the date and time z Entry of an ID, e. g.
ProLab 4000 Operating principles 2 Complete and confirm the ID with . Mouse operation: With the mouse, you have in all entry fields the additional option of showing a keyboard with the right mouse button. You can then enter letters or numerals with the mouse. Correcting wrong entries ba75646e02 01/2010 Move the cursor behind the character to be deleted with . Then delete the character in front of the cursor with .
Operating principles ProLab 4000 4.4 Navigation The dialog with the meter takes place through menus and dialog boxes as usual with any PC software. In each dialog box there are operating elements such as register cards, selection lists, buttons or input fields. Note The ProLab 4000 is designed to be operated with a mouse. A suitable mouse is included in the scope of delivery.
ProLab 4000 Operating principles 4.4.1 Navigation in the measured value display The display shows, for example, the measurement data of all activated channels, the main menu, the sensor menu and the softkey functions. z Using [Tab], activate channels or the main menu z Using [Menu], open the menu line. z Using , change the measured parameter for the selected channel (e. g. pH ><− mV).
Operating principles ProLab 4000 4.4.2 Navigation in menus A menu item contains submenus, executes a function or opens a dialog box. The selection is made with the and keys or the mouse. The current selection is highlighted. z Menus Submenus are marked by an arrow to the right (X). Menus are opened with . z Functions Functions are indicated by the name of the function. They are immediately carried out by confirming with . z Dialog boxes Settings are marked by dots (...).
ProLab 4000 Operating principles 5 Highlight a menu item with and . The highlighted menu item is displayed inverse. 6 Confirm the highlighted menu item with . When a function is executed the main menu is closed and the function executed, or a dialog box opens up. Mouse operation: ba75646e02 01/2010 1 Select a menu name with a mouse click. The menu pops up. 2 Select a menu item and confirm with a mouse click.
Operating principles ProLab 4000 4.4.3 Navigation in dialog boxes Dialog boxes contain further subelements such as register cards, selection lists and buttons. The elements are selected with the [Tab] softkey. Within a list or register card, they are selected with the or keys. Operating example: Navigation and settings in dialog boxes 1 Using [Tab], highlight individual elements in a dialog box.
ProLab 4000 Operating principles 4.4.4 Navigation in the file selection dialog box The file selection dialog is opened if a file is to be created, stored, selected or deleted. All files are stored in the folder of the user. Each user can create or delete subfolders in his/her folder. The file dialog box contains further subelements such as z symbol buttons, z a list with files and subfolders, z an input field for the file name and z buttons. The elements are selected with the [Tab] softkey.
Operating principles Operating example: Navigation and settings in file selection dialogs ProLab 4000 1 Highlight an element in a file dialog box with [Tab]. Highlighted elements such as buttons are marked by a dotted frame. Highlighted input fields are displayed inverse. 2 If an element such as the file list in the current folder allows a further selection: Highlight a different selection in element with or .
ProLab 4000 Access to the meter Switching on Switching off 5 Access to the meter 5.1 Switch the meter on and off 1 Switch the meter on with . The self-test, meter designation, software version and subsequently the Login dialog box appear. 1 Switch off the meter with . 5.2 Login as a user After switching on, the Login dialog box pops up.
Access to the meter ProLab 4000 Note The default password for the administrator is "00001". For your safety, change it as soon as possible (see page 49). No password entry is required for anonymous access. Login with electronic key The Login dialog box displays the instruction: Place the electronic key on the reader field. 1 Login with electronic key and password Place the electronic key on the read field and leave it there for approx. 2 seconds until the key has been recognized.
ProLab 4000 Access to the meter 5.3 Password for login If the used of a password for login to the meter was set by the administrator, each user has to enter his or her password during the login. The ProLab 4000 is delivered with the password "00001" for the user name, Administrator . Change this password as soon as possible. 5.3.1 Changing the password All users can change their own password. A valid password consists of at least 5 characters. 1 Open the User / Change password... menu.
Access to the meter ProLab 4000 5.4 Lock During operation (e.g. if the automatic storing function is active), the activated lock prevents the inadvertent use of the meter with the name of the registered user. The lock can only can only be released with the currently registered electronic key or the administrator key. Note The lock can only be activated in the measuring mode of operation. With anonymous access, the Activate lock function is not available.
ProLab 4000 Access to the meter 5.5 Access control and user rights You as the administrator define the type of access (assess control) to the ProLab 4000. In addition, you define the rights to carry out functions and measurements for the users (user rights). When the meter is delivered, only the enclosed electronic administrator key has an access authorization for the meter. The administrator can set up access authorizations for electronic user keys (see below).
Access to the meter ProLab 4000 User type User rights Anonymous z Calibrate and measure z Create file for manual storage z Create user configuration z Delete files in the folder, Anonymous Note Only one user can be the administrator. The administrator is adjusted in the delivery condition. The administrator can only create users of the type, user. 5.5.1 Access control The administrator defines the type of access to the meter. The setting applies to all users and the administrator.
ProLab 4000 Access to the meter 5.5.2 User management and assigning user rights The ProLab 4000 has basic user management functions. The administrator can z add new users z delete users z delete the password assigned to a user z store a configuration file for users. The configuration file contains measurement settings that cannot be changed by the user. Besides, the administrator considerably restricts the rights of the user.
Access to the meter Adding a new user Assigning a configuration to a user Erasing a registered user 54 ProLab 4000 1 Enter a new user name in the New user field. or Place an electronic user key on the reader field. The key number and a user name already stored in the key are displayed. If necessary, enter a new user name in the New user field. 2 In the context menu, select the menu item, Add user. The new user is included in the list of registered users.
ProLab 4000 Access to the meter Erasing the password for a registered user Hiding / displaying a user Exiting the user management 9 Highlight a user in the list of users. 10 In the context menu, select the menu item, Delete old password. A safety query appears. After confirming the safety query the password for the currently highlighted user is deleted. 11 Highlight a user in the list of users. 12 In the context menu, select the menu item, Hide user/visible.
System functions ProLab 4000 6 System functions System functions are all functions that are independent of the probe. 6.1 Overview: System settings The following sensor-independent meter features can be adjusted in the System menu and its submenus: Menu item Setting Description System – Data output... – USB printer ( ) – USB interface /Baud ( ) / 1200 ... 115200 Baud rate of the data interface – Serial interface /Baud ( ) / 1200 ...
ProLab 4000 System functions Menu item Setting Description ( ) Switches on or off the acoustic signal. The signal sounds e.g. when a stable measured value has been recognized (stability control) – Country List with over 100 countries With this setting you can select the country-specific notation for the date, time and numbers. The setting applies to all data that is stored or output to an interface. – Language – – – – Select the menu language System – Signal On – Country and language...
System functions ProLab 4000 6.2 Selecting the language Menus can be displayed in different languages. The language is selected in the System main menu. 1 Open the System / Country and language... menu. The Country and language window opens. 2 Select a language in the Language list. The active language is highlighted. 3 Confirm the selection with [OK] . The language is changed. 6.
ProLab 4000 System functions 6.4 Setting the date and time The data and time are displayed in the local format, according to the Country setting (see above). The date and time are set in the menu, System / Date and time.... ba75646e02 01/2010 1 Open the System / Date and time... menu. The Date and time window opens. 2 Select the time zone in the Time zone field. 3 If necessary, mark the Automatic daylight saving time field. 4 Select the date. 5 Enter the time.
System functions ProLab 4000 6.5 Selecting the channels for measured value display In the Window / Channels... you can define which channels are visible in the measured value display. Depending on the number of activated measurement data one, two or three sensor data are displayed at the same time. Menu item Description pH/U/ISE Probe 1 Display or hide the sensor data of the pH/U/ISE 1 channel. pH/U/ISE Probe 2 Display or hide the sensor data of the pH/U/ISE 2 channel.
ProLab 4000 System functions 2 Mark the option fields, USB printer, Serial interface and USB interface. The interfaces are selected for data download. 3 If data should be downloaded to the Serial interface or USB interface interfaces: Set the baud rate in the respective Baud list field. The interface is ready for data download. 6.7 Temperature The temperature affects the measurement results. You can select the unit of the temperature display.
System functions ProLab 4000 6.7.2 Temperature measurement For reproducible measurements it is essential to determine the corresponding temperature value. The measuring system receives the temperature value from: z a temperature sensor integrated in the sensor, z a temperature sensor integrated in another sensor, z an external temperature sensor NTC 30 or Pt 1000, or z manual input of the temperature value. On the display, the used temperature sensor is labeled with TP, pH1 TP, pH2 TP or Cond TP .
ProLab 4000 System functions 6.8 Automatic stability control The Autom. stability control function continuously checks the stability of the measurement signal. The stability has a considerable impact on the reproducibility of measured values. You can activate or switch off the Autom. stability control function (menu, Autom. stability controlSystem). The Autom.
System functions ProLab 4000 Note The stability criteria that apply to a measured parameter are given in the description of the measured parameter. You can change the assignment of colors to conditions (see page 64). 6.9 Color assignment For easy differentiation, the following conditions are highlighted by a background color: z Stability criterion met / not met z Indications in the info line: Instruction / info display You can adapt the colors yourself for these conditions.
ProLab 4000 System functions 6.10 Reset You can reset (initialize) all sensor settings and sensor-independent settings separately from each other. 6.10.1 Resetting the sensor settings Note The calibration data is reset to the default settings together with the measuring parameters. Recalibrate after performing a reset. The sensor settings are reset in the sensor menu. In the measured value display, activate the relevant sensor window [Tab] and open the menu with [Menu].
System functions ProLab 4000 Setting Default settings Temperature coefficient (TC) of the linear temperature compensation 2.000 %/K TDS factor 1,00 6.10.
ProLab 4000 System functions 6.11 List of open windows The Window menu item in the main menu provides an overview of the open windows of the ProLab 4000. Open recorder windows and the measured value display of the indicated sensors appear in the list of open windows. 1 Open the Window menu. 2 Select a window from the list. The window is activated and displayed in the foreground. Note Recorder windows that are open and displaced can be maximized and restored with the Maximize recorder function.
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ProLab 4000 pH Temperature measurement 7 pH 7.1 General information For reproducible pH measurements, it is essential to measure the temperature of the test sample. You have the following options to measure the temperature: z Automatic temperature measurement with – Temperature sensor (NTC 30 or Pt 1000) integrated in electrode (if available). – the integrated temperature sensor of another electrode that is connected and immersed in the sample at the same time.
pH ProLab 4000 7.2 Measuring the pH value 7.2.1 Preparatory activities Perform the following preparatory activities when you want to measure: 1 Adjust the temperature of the solutions and measure the current temperature if the measurement is made without a temperature sensor. 2 Connect a pH electrode to the meter. 3 Highlight the channel of the pH electrode in the measured value display. 4 If necessary, select the pH display with .
ProLab 4000 pH 7.2.2 Stability control Measuring 1 Perform the preparatory activities (see page 69). 2 Immerse the pH electrode in the test sample. 3 If necessary, select the pH parameter with . The Stability control function checks the stability of the measurement signal. The stability has a considerable impact on the reproducibility of measured values. The background color is red until the measured value is stable. When the measured value is stable, the background color switches to green.
pH ProLab 4000 Note You can terminate prematurely the Stability control function with manually at any time. If the Stability control function is terminated prematurely, the current measurement data is not downloaded to the interface. 5 Criteria 72 Using or , release the frozen measured value. The [SC] status display disappears. With identical measurement conditions, the following applies: Measured parameter Reproducibility Response time pH value Better than 0.
ProLab 4000 pH 7.2.3 Measurement settings All settings for pH measurements are in the Measuring menu. Menu item Setting Description – pH resolution High ( ) Medium Low Resolution of the pH display: High = 0.001 Medium = 0.01 Low = 0.1 – Alternative TP ( ) ( ) = alternative temperature sensor is used ( ) = no alternative temperature sensor is used – Setting of man. temp... -35 ... +150 °C Entry of the manually determined temperature. For measurements without temperature sensor only.
pH ProLab 4000 7.3 Why calibrate? When do you have to calibrate? Buffer sets for calibration 74 Calibration pH electrodes age. This changes the zero point (asymmetry) and slope of the pH electrode. As a result, an inexact measured value is displayed. Calibration determines the current values of the zero point and slope of the electrode and stores them. Thus, you should calibrate at regular intervals.
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pH ProLab 4000 No. Buffer set * pH values at 19 Reagecon TEC * 2,000 4,010 7,000 10,000 25 °C 20 Reagecon 20 * 2,000 4,000 7,000 10,000 13,000 20°C 21 Reagecon 25 * 2,000 4,000 7,000 10,000 13,000 25 °C 22 Riedel-de Haen * 2,000 4,000 7,000 10,000 20°C * Brand names or trade names are trademarks of their respective owners protected by law (see page 207). Note The buffers are selected in the Calibration sensor menu (see page 73).
ProLab 4000 pH Note You can display the slope in the unit, mV/pH or % (see page 73). Stability control The calibration procedure automatically activates the stability control function. The current measurement with stability control can be terminated at any time (accepting the current value). Calibration record When finishing a calibration, the new calibration values are first displayed as an informative message.
pH ProLab 4000 Calibration evaluation After calibrating, the meter automatically evaluates the calibration. The zero point and slope are evaluated separately. The worse evaluation of both is taken into account. The evaluation appears on the display and in the calibration record. Display Calibration record Zero point [mV] Slope [mV/pH] +++ - 18 ... + 18 -60.5 ... -57.5 ++ - 22 ... + 22 -57.5 ... -56 + - 26 ... + 26 -61 ... -60.5 or -56 ... -55 - - 30 ... + 30 -62 ... -61 or -55 ...
ProLab 4000 pH 7.3.1 Carrying out a calibration procedure (example: AutoCal DIN) Make sure the Calibration / pH calibration type / Buffer sets setting is selected correctly and the AutoCal calibration type is marked (see page 73). Use any one to five buffer solutions of the selected buffer set. The DIN calibration is described below. With other buffer sets, other nominal buffer values are displayed. Apart from that, the procedure is identical. 1 Perform the preparatory activities (see page 78).
pH ProLab 4000 1 2 3 4 8 80 1 Recognized nominal buffer value (referring to 25 °C) 2 Current electrode voltage 3 Current temperature value 4 Selected buffer set Wait for the measurement with stability control to end. or Terminate the stability control with [OK]. The pHX calibration window for the according to buffer solution pops up and the Finish with 1-point calibration infotext is displayed.
ProLab 4000 pH 9 Using [OK], confirm the Finish with 1-point calibration infotext and take over the new calibration values. The calibration record is displayed and output to the interface. The calibration procedure is finished. or Continue the calibration with [Continue]. or Cancel the calibration procedure without taking over the calibration values with [Cancel], or . Note For single-point calibration, the meter uses the Nernst slope (59.
pH ProLab 4000 Note A calibration line is determined for the two-point calibration. Continuing with threepoint to five-point calibration (Buffer ) DIN) 16 When measuring without temperature sensor: z Measure the temperature of the standard solution using a thermometer. z Open the setting window for the temperature value with [Man. temp.]. z Enter the temperature and confirm with [OK]. 17 Thoroughly rinse the electrode with distilled water. 18 Immerse the electrode in buffer solution 3.
ProLab 4000 pH 7.3.2 Carrying out a calibration procedure (example: VariCal) Make sure the Calibration / pH calibration type / VariCal calibration type is marked (see page 73). Single-point calibration Two-point calibration Use any buffer solution for this rapid method. The calibration will be the more exact the nearer the pH value of the buffer solution is to that of the test sample. Use two buffer solutions for this procedure: z first buffer solution: pH 7.000 ± 0.
pH ProLab 4000 1 2 3 4 7 84 1 Recognized nominal buffer value (referring to 25 °C) 2 Current electrode voltage 3 Current temperature value 4 Selected buffer set Wait for the measurement with stability control to end. or Terminate the stability control with [OK]. The pHX calibration window for the according to buffer solution pops up and the Finish with 1-point calibration infotext is displayed.
ProLab 4000 pH 8 Using [OK], confirm the Finish with 1-point calibration infotext and take over the new calibration values. The calibration record is displayed and output to the interface. The calibration procedure is finished. or Continue the calibration with [Continue]. or Cancel the calibration procedure without taking over the calibration values with [Cancel], or . Note For single-point calibration, the meter uses the Nernst slope (59.
pH ProLab 4000 Note A calibration line is determined for the two-point calibration.
ProLab 4000 pH 7.3.3 Calibration settings and calibration data In the Calibration menu, you can z set the calibration interval, z define the calibration type and z view the calibration data. Menu item Setting Description – AutoCal ( ) Calibration with commercial buffer sets. The buffer set is selected with the next menu item (Buffer sets) – Buffer sets DIN ( ) TEC ... Buffer sets to be used for pH calibration. For details, see page 74.
pH ProLab 4000 7.3.4 Calibration interval The calibration interval and calibration evaluation are indicated on the display as the CalClock. CalClock The remaining time of the calibration interval is indicated by the segmented ring around the calibration evaluation. This segmented ring reminds you to calibrate regularly. The CalClock appears on a red square after the specified calibration interval has expired. It is still possible to measure.
ProLab 4000 ORP voltage 8 ORP voltage 8.1 General information You can measure the following variables: z ORP [mV] z Relative ORP [mV] Temperature measurement The temperature value is measured and documented with all measurements. You have the following options to measure the temperature: z Automatic temperature measurement with – Temperature sensor (NTC 30 or Pt 1000) integrated in electrode (if available).
ORP voltage ProLab 4000 8.2 Measuring the ORP 8.2.1 Preparatory activities Perform the following preparatory activities when you want to measure: 1 Adjust the temperature of the solutions and measure the current temperature if the measurement is made without a temperature sensor. 2 Connect the ORP electrode to the meter. 3 Highlight the channel of the electrode in the measured value display. 4 If necessary, select the U or dU display with .
ProLab 4000 ORP voltage 8.2.2 Measuring Note ORP electrodes are not calibrated. However, you can check ORP electrodes using a test solution. Stability control 1 Perform the preparatory activities (see page 69). 2 Highlight the channel of the electrode in the measured value display. 3 If necessary, select the U display with . 4 Immerse the ORP electrode in the test sample. TheStability control function checks the stability of the measurement signal.
ORP voltage ProLab 4000 4 With activate the Stability control function. The background color is red as long as the measured value does not meet the stability criterion. As soon as the measured value is stable, the background color is green. The current measurement data is downloaded to the interface. The measured values of all channels meeting the criterion for stability control are marked by SC.
ProLab 4000 ORP voltage 8.2.3 Measuring the relative ORP Note The relative ORP can be determined with pH and ORP electrodes. To measure the difference of the ORPs of two solutions it is best to use two ORP electrodes. Define one of the ORP electrodes as the reference in the menu. The difference of the two voltages is displayed. ba75646e02 01/2010 1 Perform the preparatory activities (see page 69). 2 Prepare the reference solution for the determination of the reference point.
ORP voltage ProLab 4000 As an alternative you can also determine the difference of the ORPs of two solutions with one ORP electrode only. To do so, first define the ORP of one solution as the zero point. Stability control 1 Perform the preparatory activities (see page 69). 2 Prepare the reference solution for the determination of the reference point. 3 Immerse the electrode in the reference solution. 4 Highlight the channel of the electrode in the measured value display.
ProLab 4000 ORP voltage 1 In the measured value display, mark the channel of the ORP or pH electrode. 2 If necessary, select the U or dU parameter with . 3 Freeze the measured value with . The display switches to the display of the selected channel as necessary. In the status line, [SC] is displayed. 4 With activate the Stability control function. The background color is red as long as the measured value does not meet the stability criterion.
ORP voltage ProLab 4000 8.2.4 Measurement settings The following settings are possible for ORP measurements in the Measuring menu: Menu item Setting Description – High resolution ( ) Resolution of the mV display: ( ) = 0.1 mV ( ) = 1 mV – Alternative TP ( ) ( ) = Temperature sensor of another channel is used – Setting of man. temp... -35 ... +150 °C Entry of the manually determined temperature value. For measurements without temperature sensor only. Measuring 96 – Determine reference...
ProLab 4000 Ion concentration 9 Ion concentration 9.1 General information Note Incorrect calibration of ion sensitive electrodes will result in incorrect measured values. Calibrate regularly before measuring. Temperature measurement with ion selective measurements The temperature value is measured and documented with all measurements.
Ion concentration ProLab 4000 9.2 Measuring the ion concentration 9.2.1 Preparatory activities Perform the following preparatory activities when you want to measure: 1 Connect an ion sensitive electrode to the meter. 2 Highlight the channel of the electrode in the measured value display. 3 If necessary, select the ISE display with . 4 Open the Measuring / ISE settings / Ion type menu and select the ion type to be measured.
ProLab 4000 Ion concentration 9.2.2 Measuring 1 Perform the preparatory activities according to page 97. 2 Immerse the electrode in the test sample. Temperature for calibrating and measuring For precise ion selective measurements, the temperature difference between measurement and calibration should not be greater that 2 K. Therefore, adjust the temperature of the standard and measuring solutions accordingly.
Ion concentration ProLab 4000 4 With activate the Stability control function. While the measured value does not meet the stability criterion, the background color is red. As soon as a stable measured value is recognized, the current measurement data is downloaded to the interface. The measured values of all channels meeting the criterion for stability control are marked by SC. Note You can terminate prematurely the Stability control function with manually at any time.
ProLab 4000 Ion concentration 9.2.3 Measurement settings All settings for ion selective measurements are done in the Measuring menu. Menu item Setting Description – Units – – – – – Selection with which unit the measurement result and calibration standards should be displayed. – Ion type Ag, Br, Ca, Cd, Cl, CN, CO2, Cu, F, I, K, Na, NH3, NH4, NO3, Pb, S, ION Selection of the ion type to be measured – High ( ) – Medium – Low Selection of criteria for the stability control (see page 100).
Ion concentration Menu item ProLab 4000 Setting Description – Alternative TP ( ) ( ) : alternative temperature sensor is used ( ) : no alternative temperature sensor is used – Setting of man. temp... -35 ... +150 °C Entry of the manually determined temperature. For measurements without temperature sensor only.
ProLab 4000 Ion concentration 9.3 Why calibrate? Calibration Ion-selective electrodes age and are temperature-dependent. This changes the slope. As a result, an inexact measured value is displayed. Calibration determines the current value of the slope of the electrode and stores it in the instrument. Thus, you should calibrate before each measurement and at regular intervals.
Ion concentration ProLab 4000 ISE Cal Stability control This is the conventional two-point to nine-point calibration procedure that uses 2 to 9 freely selectable standard solutions. The concentration expected in the measurement determines the concentration of the calibration standards. During calibration, the stability control is automatically activated. The current measurement with stability control can be terminated at any time (accepting the current value).
ProLab 4000 Ion concentration Calibration evaluation After calibrating, the meter automatically evaluates the calibration. Display Calibration record +++ Error Error Magnitude of the slope [mV] Ions with valency 1 Ions with valency 2 50.0 ... 70.0 25.0 ... 35.0 < 50 or > 70 < 25 or > 35 Eliminate the error according to chapter 16 WHAT TO DO IF...
Ion concentration ProLab 4000 9.3.1 Carrying out calibration Use two to nine standard solutions in ascending or descending order. Note When calibrating within the framework of a method measurement, it is always a two-point calibration. Preparatory activities Calibration 106 Perform the following preparatory activities when you want to calibrate: 1 Connect an ion sensitive electrode to the meter. 2 Highlight the channel of the electrode in the measured value display.
ProLab 4000 Ion concentration 3 When measuring without temperature sensor: z Measure the temperature of the standard solution using a thermometer. z Open the setting window for the temperature value with [Man. temp.]. z Enter the temperature and confirm with [OK]. 4 Thoroughly rinse the electrode with distilled water. 5 Immerse the electrode in standard solution 1. 6 Open the ISE standard input window with [Continue]. 7 Select a value from the Concentration list. or Enter a value with <0...9>.
Ion concentration ProLab 4000 9 Continuing with twopoint calibration 10 Wait for the measurement with stability control to end. or Take over the calibration value with [OK]. The ISE standard input window for the entry of the concentration of the second standard solution pops up. Select a value from the ISE-Std list. or Enter a value and, if necessary, an exponent with <0...9>. or Cancel the calibration with [Cancel]. Note To enter a concentration in exponential representation such as 1.
ProLab 4000 Ion concentration 16 Using [OK], confirm the Finish with 2-point calibration infotext and take over the new calibration values. The calibration record is displayed and output to the interface. The calibration procedure is finished. or Continue the calibration with [Continue]. or Cancel the calibration procedure without taking over the calibration values with . Note A calibration line is determined for the two-point calibration.
Ion concentration ProLab 4000 9.3.2 Calibration data In the Calibration menu, you can view the calibration data of ISE calibrations. Menu item Description Calibration 110 – Calibration record... Displays the calibration record of the last calibration. – Calibration history... Displays the calibration history of the last calibrations.
ProLab 4000 Ion concentration 9.4 Blank value correction If the ion concentration in the sample is so small that it is not in the linear range of the electrode, you can increase the ion concentration in the linear range with the blank value correction by the addition of a blank value solution. The displayed measured value is the difference between the actual measured value and the determined blank value.
Ion concentration ProLab 4000 9.5 Reference measurement A reference measurement enables you to assign any concentration value to the calibration curve of your electrode for a specific ion concentration (reference concentration). Prerequisite: A valid calibration must be available.
ProLab 4000 Ion concentration 9.6 Measuring with increment procedure (methods) 9.6.1 Selecting the measuring method The following methods are supported: z Standard addition z Double standard addition z Standard subtraction z Sample addition z Standard subtraction z Blank value addition (Standard addition with blank value correction) ba75646e02 01/2010 1 Perform the preparatory activities (see page 103). 2 Highlight the channel of the electrode in the measured value display.
Ion concentration ProLab 4000 9.6.2 Standard addition In the Standard addition procedure, a known amount of standard solution is added to the sample. The ion concentration in the sample is calculated from the change in potential. Calibration 1 Check the currently displayed ion. If the ion to be measured is displayed incorrectly: Select the ion type in the menu, Measuring / ISE methods / Ion type. 2 In the Measuring / ISE methods menu, select the method, Standard addition.
ProLab 4000 ba75646e02 Ion concentration 01/2010 6 In the Sample register, enter the values for the sample volume (Sample volume) and the volume of the ISA/TISAB solution (ISA/TISAB volume) as necessary. 7 Thoroughly rinse the electrode with deionized water. 8 Immerse the electrode in the sample. 9 Start the measurement with [Continue] . The measured value is checked for stability (Stability control). 10 Wait for the measurement with stability control to end.
Ion concentration ProLab 4000 15 Change the displayed unit of the measured value with [Unit] if necessary. 16 If required, display the record of the current measurement with [Record]. 17 Start measuring further samples with [Continue]. Repeat the steps 5 - 15 for all samples. or Terminate the measuring method with [Cancel] and confirm the safety query with [OK]. Measurement with the selected method is completed. 9.6.
ProLab 4000 ba75646e02 Ion concentration 01/2010 3 In the Sample register, enter the values for the sample volume (Sample volume) and the volume of the ISA/TISAB solution (ISA/TISAB volume) as necessary. 4 Thoroughly rinse the electrode with deionized water. 5 Immerse the electrode in the sample. 6 Start the measurement with [Continue] . After end of the measurement, the Standard pops up. 7 In the Standard register, enter the value for Standard concentration if necessary.
Ion concentration 118 ProLab 4000 10 Wait for the measurement with stability control to end. or Take over the measured value with [OK]. The Standard register opens up. 11 Add standard solution to the sample (2 percent by volume of the sample solution). 12 Start the measurement with [Continue]. The measured value is checked for stability (Stability control). 13 Wait for the measurement with stability control to end. or Take over the measured value with [OK].
ProLab 4000 Ion concentration 9.6.4 Standard subtraction In the "Standard Subtraction" procedure, a known amount of standard solution is added to the sample (as complexing agent or precipitating agent) and, thus, the ion concentration lowered. The ion concentration in the sample is calculated from the change in potential. Calibration 1 Check the currently displayed ion. If the ion to be measured is displayed incorrectly: Select the ion type in the menu, Measuring / ISE methods / Ion type.
Ion concentration 120 ProLab 4000 6 In the Sample register, enter the values for the sample volume (Sample volume) and the volume of the ISA/TISAB solution (ISA/TISAB volume) as necessary. 7 Check the currently displayed ions. If the ion of the standard (e.g. Cl (Sub) is displayed incorrectly: Change the ion type of the standard solution [e.g. Cl (Sub)] in the ION register. 8 Thoroughly rinse the electrode with deionized water. 9 Immerse the electrode in the sample.
ProLab 4000 ba75646e02 Ion concentration 01/2010 16 Change the displayed unit of the measured value with [Unit] if necessary. 17 If required, display the record of the current measurement with [Record]. 18 Start measuring further samples with [Continue]. Repeat the steps 5 - 16 for all samples. or Terminate the measuring method with [Cancel] and confirm the safety query with [OK]. Measurement with the selected method is completed.
Ion concentration ProLab 4000 9.6.5 Sample addition In the Sample addition procedure, a known amount of test sample is added to the standard solution. The ion concentration in the sample is calculated from the change in potential. Calibration 1 Check the currently displayed ion. If the ion to be measured is displayed incorrectly: Select the ion type in the menu, Measuring / ISE methods / Ion type. 2 In the Measuring / ISE methods menu, select the method, Sample addition.
ProLab 4000 ba75646e02 Ion concentration 01/2010 6 In the Standard register, enter the values for Standard volumeStandard concentration and ISA/TISAB volume if necessary. 7 Thoroughly rinse the electrode with deionized water. 8 Immerse the electrode in the standard. 9 Start the measurement with [Continue]. The measured value is checked for stability (Stability control). 10 Wait for the measurement with stability control to end. or Take over the measured value with [OK].
Ion concentration 124 ProLab 4000 15 Change the displayed unit of the measured value with [Unit] if necessary. 16 If required, display the record of the current measurement with [Record]. 17 Start measuring further samples with [Continue]. Repeat the steps 5 - 15 for all samples. or Terminate the measuring method with [Cancel] and confirm the safety query with [OK]. Measurement with the selected method is completed.
ProLab 4000 Ion concentration 9.6.6 Sample subtraction In the Sample subtraction procedure, a known amount of test sample is added to the standard solution. The ion concentration in the sample is calculated from the change in potential. The sample subtraction is one method for the indirect determination of ions. It is used for the determination of ions for which no direct determination is possible. Calibration 1 Check the currently displayed ion.
Ion concentration 126 ProLab 4000 6 In the Standard register, enter the values for Standard volumeStandard concentration and ISA/TISAB volume if necessary. 7 Check the currently displayed ions. If the ion of the standard (e.g. Cl (Sub) is displayed incorrectly: Change the ion type of the standard solution [e.g. Cl (Sub)] in the ION register. 8 Thoroughly rinse the electrode with deionized water. 9 Immerse the electrode in the sample. 10 Start the measurement with [Continue] .
ProLab 4000 ba75646e02 Ion concentration 01/2010 16 Change the displayed unit of the measured value with [Unit] if necessary. 17 If required, display the record of the current measurement with [Record]. 18 Start measuring further samples with [Continue]. Repeat the steps 5 - 16 for all samples. or Terminate the measuring method with [Cancel] and confirm the safety query with [OK]. Measurement with the selected method is completed.
Ion concentration ProLab 4000 9.6.7 Blank value addition (Standard addition with blank value correction) In the "Standard addition with blank value correction" procedure, a known amount of standard solution is added to the sample in two steps. With the first addition, the ion concentration is raised to the linear range of the electrode characteristic curve. The second addition is equivalent to the standard addition. The ion concentration in the sample is calculated from the change in potential.
ProLab 4000 Ion concentration Measuring 6 In the Sample register, enter the following values: z the volume of the sample (Sample volume) z the volume of the ISA/TISAB solution (ISA/TISAB volume) z the volume of the blank value solution (Blank value volume) z the concentration of the blank value solution (Blank value conc.). 7 Thoroughly rinse the electrode with deionized water. 8 Immerse the electrode in the sample that was supplemented with blank value solution.
Ion concentration 130 ProLab 4000 11 In the Standard register, enter the values for Standard volume and Standard concentration if necessary. 12 Add the standard solution to the sample. 13 Start the measurement with [Continue]. The measured value is checked for stability (Stability control). 14 Wait for the measurement with stability control to end. or Take over the measured value with [OK]. The Calculation register with the calculated measured value pops up.
ProLab 4000 Conductivity 10 Conductivity 10.1 General information You can measure the following variables: z Conductivity z Specific resistance z Salinity z Total dissolved solids (TDS) The meter provides the following functions: z AutoRange (automatic selection of the measuring range). If a measuring range is exceeded, AutoRange causes the meter to automatically change to the next higher measuring range and back again.
Conductivity ProLab 4000 Note The selection of the measuring cell and setting of the cell constant is made in the conductivity measuring menu (see page 134). The cell constant to be set must either be taken from the operating manual of the measuring cell or is printed on the measuring cell. With ID conductivity measuring cells, the last used cell constant and other settings are stored in the sensor (see page 18). 10.2.
ProLab 4000 Conductivity Stability control The Stability control function checks the stability of the measurement signal. The stability has a considerable impact on the reproducibility of measured values. The background color is red until the measured value is stable. Regardless of the setting for Autom. stability control (see page 63) in the System menu, you can start the Stability control function manually at any time.
Conductivity ProLab 4000 10.2.3 Measurement settings The following measurement settings are possible for conductivity measuring cells: Menu item Setting Description Measuring – Cell constant – Calibrated cell constant Measuring cells whose cell constant is determined by calibration in KCL control standard (calibration ranges see page 149). The currently valid cell constant is displayed in the status line. – Adjustable cell constant...
ProLab 4000 Conductivity Menu item Setting Description – Tref 25 Reference temperature Measuring – Reference temperature – Tref 20 – TDS factor setting... 0.40 ... 1.00 TDS factor This setting only applies to the measured parameter, TDS. If a TDS factor is used, it is displayed in the Status line. – Alternative TP ( ) ( ) = alternative temperature sensor is used – Setting of man. temp... -35 ... +150 °C Entry of the manually determined temperature.
Conductivity ProLab 4000 10.2.4 Determining/setting the temperature compensation The conductivity of aqueous solutions is mainly caused by the temperature and the concentration of dissolved substances. Reference temperature To compare measured values that were determined at different temperatures they have to be converted to a reference temperature. Thus, a conductivity specification includes a reference temperature specification as a matter of principle.
ProLab 4000 Conductivity Temperature compensation for diluted solutions For the measurement of aqueous solutions z in a low concentration range (diluted solution) z in a small temperature range (|T - Tref| < 10 K) z with a fixed reference temperature at 20 °C or 25 °C, the procedures of linear (TC lin) and nonlinear (TC nLF) temperature compensation are suitable. The calculation of the temperature compensation is based on the preset reference temperature, 20 °C or 25 °C.
Conductivity Temperature compensation for concentrated solutions ProLab 4000 For the measurement of aqueous solutions z in a wide concentration range z in a wide temperature range (|T - Tref| > 10 K) z with freely adjustable reference temperature, procedures with an individually determined nonlinear temperature compensation are suitable (designation: TC nLin1 ... 4). The temperature compensation procedures have different ways of determining the temperature and concentration dependency.
ProLab 4000 Conductivity 10.2.5 Selecting the nonlinear temperature compensation TC nLF 1 Highlight the channel of the conductivity measuring cell in the measured value display. 2 If necessary, select the measured parameter with . 3 Select the nonlinear temperature compensation with Measuring / Temperature coefficient / TC nLF. In the status line, [nlF] is displayed. 10.2.6 Selecting the linear temperature compensation TC Lin...
Conductivity ProLab 4000 10.2.
ProLab 4000 ba75646d02 Conductivity 01/2010 4 Select a test sample with permanently stored coefficients (NaCl, KCl, NaOH, HCl) or the freely adjustable coefficients (adjustable). The stored temperature coefficients are displayed during the selection of the test sample. 5 With freely selectable temperature coefficients only: Enter each temperature coefficient with an exponent (unit: 1/°C or 1/°C2). 6 Confirm the entries with . [nLin1] is displayed in the status line of the measuring channel.
Conductivity ProLab 4000 10.2.8 Selecting and determining the nonlinear temperature compensation TC nLin2 1 Highlight the channel of the conductivity measuring cell in the measured value display. 2 If necessary, select the measured parameter with . 3 Immerse the measuring cell in the test sample. 4 Open the input window for the measurement of the temperature dependency with Calibration / TC calibration / TC nLin2.
ProLab 4000 Conductivity Note The measuring method can only be started if Ref. temp., Start temp. and Temp. interval are selected so that the reference temperature corresponds to the nominal temperature of a measuring point: Ref. temp. = Start temp. + x*Temp. interval ba75646d02 01/2010 6 Warm or cool the test sample to the start temperature Start temp..
Conductivity ProLab 4000 10.2.9 Selecting and determining the nonlinear temperature compensation TC nLin3 1 Highlight the channel of the conductivity measuring cell in the measured value display. 2 If necessary, select the measured parameter with . 3 Immerse the measuring cell in the test sample. 4 Open the input window for the measurement of the temperature dependency with Calibration / TC calibration / TC nLin3. 5 Enter the start temperature (Start temp.), end temperature (End temp.
ProLab 4000 ba75646d02 Conductivity 01/2010 7 Warm or cool the measuring solution (standard 1) to the start temperature Start temp.. As soon as the temperature of the measuring point is achieved and a stable value is recognized, the measurement is automatically started and the dataset stored.
Conductivity ProLab 4000 10.2.10 Selecting and determining the nonlinear temperature compensation TC nLin4 Preparatory activities 146 The nonlinear temperature compensation TC nLin4 is determined from several standards of unknown concentration. You prepare the required standards yourself through equidistant dilution of the standard with the highest concentration e.g.
ProLab 4000 Conductivity 5 Enter the start temperature, end temperature and temperature interval. Enter the number of standards and confirm with [Continue]. The display shows: z the current conductivity value z the current temperature z information on the nominal temperature of the next measuring point and the temperature difference between the current temperature and the nominal temperature Note The measuring method can only be started if Ref. temp., Start temp. and Temp.
Conductivity ProLab 4000 7 Slowly warm or cool the test sample (standard 1) until the end temperature End temp. is achieved. Each time the nominal temperature for a measuring point is reached a dataset is stored. At the end of the series of measurements for the solution (standard 1), the corresponding measuring record is displayed. 8 Confirm the record with [Continue]. 9 Repeat the steps 5 to 8 for all further solutions (standard 2 to x).
ProLab 4000 Conductivity 10.3 Why determine the cell constant? Determining the cell constant (calibration in control standard) Due to aging, the cell constant slightly changes. As a result, an inexact measured value is displayed. Calibration determines and stores the current value of the cell constant. Thus, you should calibrate at regular intervals. The calibration data of non-ID sensors is stored in the meter. For ID sensors, the calibration data is stored in the sensor.
Conductivity ProLab 4000 Sample record: Print date 26.04.07 16:13 ProLab 4000 (06249876) Current user: 1234567890 CALIBRATION Cond Calibration date 20.04.07 10:14:03 LF413-ID (A062498765) User: Administrator Calibration interval: Standard: Cond./Tref 25: Cal. temp: Cell constant: Sensor 150 days 0,01 mol/l KCl 1413 µS/cm 25,4 °C 0.475 1/cm +++ 25.0 °C Note If non-ID sensors are used, the sensor type and series number are not output in the calibration record.
ProLab 4000 Conductivity 10.3.1 Determining the cell constant (calibration) Proceed as follows to determine the cell constant: ba75646d02 01/2010 1 Connect a conductivity measuring cell to the meter. 2 Select the channel of the measuring cell in the measured value display. 3 If necessary, select the parameter, conductivity with . 4 Start the calibration with . The calibration display appears. 5 Immerse the conductivity measuring cell in the control standard solution, 0.
Conductivity ProLab 4000 10.3.2 Calibration settings and calibration data In the Calibration menu you can set the calibration interval and view the calibration data. Menu item Setting Description 1 ... 999 Calibration interval for the measuring cell (in days). The meter reminds you to calibrate regularly by the red frame around the CalClock in the measuring window. Calibration – Calibration interval... 152 – Calibration record... Displays the calibration record of the last calibration.
ProLab 4000 Memory 11 Memory With the ProLab 4000 software you can store and recall all important measurement and configuration data. Each data type has an individual storage format. z Measurement datasets of the manual memory "*.mst" (see page 154) z Measurement datasets of the automatic memory "*.ast" (see page 156) z Recorder "*.rdt" (see page 163) z Configurations "*.ste" (see page 182) z Calibration histories "*.cal" (see page 160) 11.
Memory ProLab 4000 11.1.1 Creating and selecting a file for manually stored measurement datasets Creating a file for manually stored measurement datasets Selecting the file for measurement dataset to be stored manually You can create the file in which to store your manually stored measurement datasets. Files for manually stored measurement datasets have the file extension, "*.mst". 1 Open the menu, Memory / Manual memory / New.... The Open file dialog box pops up.
ProLab 4000 Memory 11.1.2 Storing measurement datasets manually Measurement datasets are stored in a file selected before (see page 154). Allocating an Identification (ID) to the data record makes it easier to find it again. 1 Using , display the current measurement dataset. 2 If necessary, enter an ID (ID) for the measurement. 3 If necessary, enter additional text in the comment field (V). Note The entry in the ID field automatically appears for the next storing procedure.
Memory ProLab 4000 11.1.3 Automatically storing measurement datasets The file in which measurement datasets should be automatically stored is selected by yourself. You can create a new file o4r select an existing file to be overwritten. Files for automatically stored measurement datasets have the file extension, "*.ast". 1 Open the menu, Memory / Automatic memory / New.... The New file dialog is open. 2 Enter a new file name and confirm with [OK]. The Automatic memory window opens.
ProLab 4000 Memory Note The progress of the automatic memory is indicated by a progress bar. The Automatic memory window can be minimized with the mouse in order to see the measured value display. 7 ba75646e02 01/2010 Wait for the automatic storing to be finished. or Finish the automatic storing manually with [Terminate].
Memory ProLab 4000 11.1.4 Displaying and filtering stored measurement datasets 1 Open the currently selected manual memory with . or Open the menu, Memory / Manual memory or Automatic memory / Display.... The Open file dialog box pops up. 2 Select a file and confirm with [OK]. A data record of the selected file is displayed. 3 Using [Filter], open the Data filter window for the setting of filter criteria if necessary.
ProLab 4000 Memory 4 Activate the selected filter criteria with [OK]. The [Filter] option field is marked. The filter criteria are active. 5 Enter or select a number in the selection field for the dataset number. The selected dataset within the list of (filtered) measurement datasets is displayed. 6 If necessary, download the list of the (filtered) measurement dataset to the interface with [Print]. 7 Terminate the display of stored measurement datasets with Terminate. 11.1.
Memory ProLab 4000 11.2 Calibration data The current calibration record is automatically stored after each valid calibration procedure. 11.2.1 Displaying stored calibration data Displaying the current calibration record The current calibration record for a meter and a sensor can be found in the menu, Calibration / Calibration record.... 1 Highlight a channel in the measured value display. 2 Select the measured parameter with . 3 Open the Calibration menu with Calibration record....
ProLab 4000 Memory 11.2.2 Managing the calibration data The calibration data is stored in the current calibration record (menu, Calibration / Calibration record...) and in the calibration history (menu, Calibration / Calibration history... and Memory / Calibration memory). The current calibration record of ID sensors is stored in the sensor, of non ID sensors it is stored in the ProLab 4000. The meter creates a separate calibration history for each ID sensor calibrated with the ProLab 4000.
Memory ProLab 4000 11.3 Recorder data Information on the recording, storing, displaying and deleting of measured value curves is given on page 163 ff. Files containing recorder data have the file extension "*.rdt". 11.4 Configuration data Information on the recording, storing, displaying and deleting of configuration files is given on page 182 ff. Files containing configuration data have the file extension "*.ste".
ProLab 4000 Recorder 12 Recorder The recorder represents measured values graphically in a system of coordinates. The recorder can record a running measurement (online recorder) or the developing of a stored measurement (offline recorder).
Recorder ProLab 4000 12.1 Recording the measured value curve The recorder records the course of the measured values curve and the course of the temperature curve. Starting the recorder 1 Highlight a channel in the measured value display,e.g. pH. 2 Open the Measuring / Recorder... menu. The Online recorder window pops up. The current measurement data of the selected channel is recorded.
ProLab 4000 Recorder 12.2 Recording the curve of the measured temperature value If the recorder was started without recording the temperature value, you can switch on the recording of the temperature value. The current setting for the recording of the temperature value is retained until the next start of the recorder. 1 Open the recorder menu, Settings.... The recording of the temperature value is switched off or on ( ). 2 Select the menu item, Temperature recording.
Recorder ProLab 4000 12.3 Storing recorder data The recorder records the course of the measured values curve and the course of the temperature curve. You can store the previous course of the measured value recording in a file at any time. 166 1 Open the File / Save as menu. The Save file window pops up. 2 Enter a new file name and confirm with [OK]. The previous progression of the measured value graphic is stored in the file.
ProLab 4000 Recorder 12.4 Opening the offline recorder Displaying a different recorder file ba75646e02 01/2010 Displaying stored recorder data 1 Open the menu, Memory / Recorder / Display.... The Open file dialog box pops up. 2 Select a file with recorder data and confirm with [OK]. The Offline recorder window pops up and displays the selected recorder data. 3 Open the File / Open menu. The Open file dialog box pops up. 4 Select a file and confirm with [OK].
Recorder ProLab 4000 12.5 Settings for the recorder In the Recorder settings dialog box, the appearance of your recorder is defined. The following settings can be done while the recording is running or after opening a completed recording.
ProLab 4000 Recorder 12.5.1 Defining the recording interval The Recording interval defines at which intervals the measured values are recorded. 1 Open the recorder menu, Settings...Settings.... The Recorder settings window pops up. 2 Select the Time register for the entry of the recording interval. 3 Select the interval. 4 Use [OK] to accept the new settings and close the dialog box, Recorder settings. The new settings are active. or Select another register to make further settings. 12.5.
Recorder 170 ProLab 4000 1 Open the recorder menu, Settings...Settings.... The Recorder settings window pops up. 2 Select the Measured value register for the scaling of the measured value axis. 3 Make the settings for the axes. If necessary, define limit values (see page 171). 4 Select the Temperature register for the scaling of the temperature value axis. 5 Make the settings for the axes. If necessary, define limit values (see page 171).
ProLab 4000 Recorder 12.5.3 Defining and activating limit values With the limit values you define the measured values at which the curve of the measurement developing is displayed gray if the measured are below or above the limits. Thus measured values below or above the limits can easily be recognized. ba75646e02 01/2010 1 Open the recorder menu, Settings...Settings.... The Recorder settings window pops up. 2 Select the Measured value register to define the limit values for the measured value.
Recorder ProLab 4000 12.5.4 Defining the colors for the recorder representation The appearance of the recorder is determined with the following colors: z Background color z Text color for axes legend z Color of the measured value curve z Color of temperature value curve 172 1 Open the recorder menu, Settings...Settings.... The Recorder settings window pops up. 2 Select the General register card for the setting of background color and text color. 3 Open the color palette for background color with [.
ProLab 4000 Recorder 13 12.6 Use [OK] to accept the new settings and close the dialog box, Recorder settings. The new settings are active. or Select another register to make further settings. Changing the displayed axis intercept The standard settings for the displayed axis intercepts are defined in the Recorder settings window for the time axis (register, Time), the measured value axis (register, Measured value) and the temperature axis (register, Temperature) (see page 169).
Recorder ProLab 4000 1 Zooming an axis intercept The axis intercepts of the recorder can be zoomed as follows (time axis and measured value/temperature axis). 1 Undoing the zooming 174 Click on an arrow at the beginning or end of an axis with the mouse (time axis or measured value/temperature axis). The displayed axis intercept is displaced in the direction of the arrow. Draw a rectangle within the recorder with the mouse. The marked section is displayed bigger.
ProLab 4000 Recorder 12.7 Displaying exact measurement data at a point (cursor) In the recorder window, you can display the exact measurement data numerically at a point of the measuring curve. 1 Open the menu item, DisplayCursor. A cursor is displayed. 2 Move the cursor to a position with the mouse. The respective numeric measurement data is displayed in a box. 12.8 ba75646e02 01/2010 Deleting stored recorder data 1 Open the menu, Memory / Recorder / Delete....
Recorder 176 ProLab 4000 ba75646e02 01/2010
ProLab 4000 Transmitting data 13 Transmitting data 13.1 Printing current measurement data To which interface the measurement data should be output with is specified in the menu, System / Data output... (see page 60). 1 13.2 Output the current measurement data to the interface with . Transmitting data (to a PC or printer) The meter has the following interfaces for PC/printer: z RS232 interface (serial interface) e.g.
Transmitting data ProLab 4000 Note Pin assignment of the socket: See page 195. 13.2.2 USB-B interface (USB Device) Connect the interface to the PC via the supplied Z875 USB cable. Installation of the USB driver on the PC System requirements of the PC for installation of the USB driver: z PC with Pentium processor or higher with at least one free USB connection and CD-ROM drive z Windows 2000, XP. 1 Insert the supplied installation CD in the CD drive of your PC.
ProLab 4000 Transmitting data 13.2.3 USB-A interface (USB Host) Connect the USB-A interface (USB Host) of the ProLab 4000 to the printer. 1 Connect the USB printer to the USB Host interface. 13.2.4 Options for data transmission Data can be transmitted to a PC or external printer via the interfaces, RS232, USB-B (USB Device) and USB-A (USB Host).
Transmitting data ProLab 4000 13.3 Data backup 13.3.1 Data backup by the administrator To back up important data against being lost or to relocate big files from the instrument, the administrator can plug an external USB medium to the ProLab 4000 in order to save data on it. 180 1 Connect a USB memory device to the USB-A USB Host interface. 2 Open the File / Data saving... menu. A double dialog box opens. 3 Select a file extension in the list of file types, e.g. *.sto.
ProLab 4000 Transmitting data 13.3.2 Viewing backed up data The external USB medium is displayed within the directory of each user. Thus the data can be read at any time after connecting the USB medium. Example: Viewing backed up measurement data ba75646e02 01/2010 1 Connect a USB memory device to the USB-A USB Host interface. 2 Open the menu, Memory / Manual memory or Automatic memory / Display.... The Open file dialog box pops up. 3 Select a file from the external medium and confirm with [OK].
Configurations ProLab 4000 14 Configurations As the administrator, you can create and assign a configuration to each user (see page 52). The settings for each measured parameter are defined in a configuration file. If a configuration file is assigned to a user, the measurement setting for the user are fixed and the user rights limited. All users whose user rights were not limited by the user can create their own configuration files for different measurement tasks.
ProLab 4000 Configurations 14.1 Viewing a configuration A configuration viewer is available so the current configuration settings can be viewed. It gives an overview of the current measurement settings. 1 Open the menu, File / View configuration.... The Configuration window appears. The current configuration is displayed. Note A user whose user rights were restricted by the administrator cannot change these settings.
Configurations ProLab 4000 14.2 Creating a new configuration When creating a configuration, the current settings of the meter for each measured parameter are taken over in the Configuration window first. Then the settings can be adjusted and stored as an extra configuration file. 1 Open the menu, File / New configuration.... The Configuration window appears. 2 Define the options for allowed measurements for all measured parameters. 3 Using [Save], open the Save file dialog.
ProLab 4000 Configurations 14.3 Loading a configuration All users who can create a configuration can also load it. When loading a configuration, all settings stored in the configuration file can be loaded. ba75646e02 01/2010 1 Open the File menu with Select configuration.... The Open file dialog box pops up. 2 Select a configuration file ("*.ste") and confirm with [OK]. The Configuration window pops up. 3 The configuration for all measured parameters can be viewed but not changed.
Configurations ProLab 4000 14.4 Deleting a configuration All users who can create a configuration can also delete it in their directory. 186 1 Open the File menu with Delete configuration.... The Delete file dialog box pops up. 2 Select the file to be deleted and confirm with [OK]. 3 Confirm the safety query with [OK]. The file is deleted.
ProLab 4000 Maintenance, cleaning, disposal 15 Maintenance, cleaning, disposal 15.1 Maintenance The only maintenance activity required is replacing the batteries. Note For maintenance of the measuring cells and electrodes refer to the relevant operating manuals. Replacing the batteries If the meter stays connected to the power supply while the batteries are being replaced, or if they are replaced within approx. one minute, the date and time will be retained in the meter.
Maintenance, cleaning, disposal ProLab 4000 6 Using a screw driver, tighten the screws (2) of the lid of the battery compartment. 7 Switch the meter on with . Note If the date and time are lost, the setting of the date and time is displayed automatically after switching on. Set the date and time (see page 59) CAUTION Make sure that the poles of the batteries are the right way round. The ± signs on the batteries must correspond to the ± signs in the battery compartment.
ProLab 4000 What to do if... Error message Err1 16 What to do if... 16.
What to do if... ProLab 4000 Cause – Electrode broken Remedy – Replace the electrode Buffer solutions: – Incorrect buffer solutions – Select the suitable buffer set for the buffers used or – Replace the buffer solutions No stable measured value – Buffer solutions too old – Use only once.
ProLab 4000 What to do if... CalClock on red background Cause Remedy – Measurement procedure not suitable – Follow special procedure Cause Remedy – Calibration interval expired – Recalibrate the measuring system 16.
What to do if... Warning [TempErr] Warning [ISEErr] ProLab 4000 Cause Remedy – Temperature difference between measurement and calibration greater than 2 K. – Adjust the temperature of the test sample Cause Remedy – Electrode voltage outside calibrated range – Recalibrate 16.
ProLab 4000 What to do if... 16.4 General errors Meter does not react to keystroke Cause Remedy – Operating condition undefined or EMC load unallowed – Processor reset: Press the and key simultaneously.
What to do if...
ProLab 4000 Technical Data Dimensions Weight Mechanical structure 17 Technical Data 17.1 General data approx. 240 x 280 x 70 mm approx. 2.5 kg (without power pack) Type of protection IP 54 Electrical safety Protective class III Test certificates cETLus, CE Ambient conditions Power supply Sensor input ba75646e02 01/2010 Storage - 25 °C ... + 65 °C Operation + 5 °C ... + 45 °C Climatic class 2 Power pack FRIWO FW7555M/09, 15.1432.500-00 Friwo Part. No. 1883259 Input: 100 ...
Technical Data RS232 serial interface ProLab 4000 Connection of the PC cable (Z390) or printer cable (Z393) Baud rate adjustable: 1200, 2400, 4800, 9600, 19200 Baud Type RS232, data download Data bits 8 Stop bits 2 Parity None Handshake RTS/CTS Cable length Max.
ProLab 4000 ba75646e02 Technical Data 01/2010 Instrument safety EC guideline 2006/95/EC EN 61010-1 class A ANSI/UL 61010-1 CAN/CSA-C22.2 No.
Technical Data ProLab 4000 17.2 Measuring ranges, resolution, accuracy 17.2.1 Temperature Measuring ranges, resolution Accuracy (± 1 digit) Manual temperature input Variable Measuring range Resolution T [°C] - 35.0 ... + 150.0 0.1 Variable Accuracy Temperature of the test sample T [°C] ± 0.1 - 35.0 ... + 150.0 Variable Range Increment Tmanual [°C] -35 ... + 150 1 Variable Measuring range Resolution pH - 2.000 ... + 20.000 - 2.00 ... + 20.00 - 2.0 ... + 20.0 0.001 0.01 0.
ProLab 4000 Technical Data 17.2.3 ISE Measuring ranges, resolution Variable Measuring range Resolution ISE [mg/l, %, ppm, mg/kg, µmol/l] 1.0 E-40 ... 9.9 E-4 0.001 ... 9.999 10.00 ... 99.99 100.0 ... 999.9 1000 ... 999999 1.0 E6 ... 9.9 E39 1 E-39 ... 1 E-5 0.001 0.01 0.1 1 1 E1 ... 1 E38 Manual temperature input Variable Range Increment Tmanual [°C] - 35 ... + 150 1 Measuring range Resolution 0.000 ... 1.999* 0.00 ... 19.99** 0.0 ... 199.9 200 ... 1999 0.001 0.01 0.1 1 2.00 ... 19.
Technical Data Cell constants Reference temperature Accuracy (± 1 digit) ProLab 4000 Cell constant C Values Can be calibrated in the ranges 0.450 ... 0.500 cm-1 0.585 ... 0.715 0.800 ... 1.200 cm-1 Adjustable 0.010 cm-1 (fixed) 0.090 ... 0.110 cm-1 0.250 ... 25.000 cm-1 Reference temperature Values Adjustable 20 °C (Tr20) 25 °C (Tr25) Variable Accuracy Temperature of the test sample ϰ / Temperature compensation None (Off) ± 0.5 % Nonlinear (nLF) ± 0.5 % 0 °C ...
ProLab 4000 Lists 18 Lists This chapter provides additional information and orientation aids. Abbreviations The list of abbreviations explains the indicators and abbreviations that appear on the display and in the manual. Status display indicators Specialist terms The glossary briefly explains the meaning of the specialist terms. However, terms that should already be familiar to the target group are not described here.
Lists ProLab 4000 Abbreviations Conductivity value (international γ) 202 °C Temperature unit, degrees Celsius °F Temperature unit, degrees Fahrenheit C Cell constant [cm-1] (internat. k) D.O. Dissolved oxygen Lin Linear temperature compensation LoBat Batteries almost empty (Low battery) mV Voltage unit mV/pH Unit of the electrode slope (internat. mV) nLF Nonlinear temperature compensation pH pH value S Slope (internat.
ProLab 4000 Lists Status display indicators ba75646e02 01/2010 [SC] Measured value (Hold) or Measurement with stability control [ARng] Automatic range selection (AutoRange) [TP] Temperature sensor is being used CondTP when measuring pH using multiparameter meters only: Integrated temperature sensor of a conductivity measuring cell is being used [nLF] Conductivity measurement only: Temperature compensation "nLF" [Lin] Conductivity measurement only: Temperature compensation "TC lin" [TC off]
Lists ProLab 4000 Glossary Adjusting AutoRange Name of the automatic selection of the measuring range. Calibration Comparing the value from a measuring system (e. g. the displayed value) to the correct value or a value that is regarded as correct. Often, this expression is also used when the measuring system is adjusted at the same time (see adjusting). Cell constant, k Channel Conductivity Characteristic quantity of a conductivity measuring cell, depending on the geometry.
ProLab 4000 Lists Molality Molality is the quantity (in Mol) of a dissolved substance in 1000 g solvent. Offset potential The measurable potential of a symmetrical electrode, the membrane of which is immersed in a solution with the pH of the nominal electrode zero point. The zero point is part of the offset potential. ORP voltage The ORP is caused by oxidizing or reducing substances dissolved in water if these substances become effective on an electrode surface (e. g. a gold or platinum surface).
Lists ProLab 4000 Temperature compensation Name of a function that considers the temperature influence on the measurement and converts it accordingly. Depending on the measured parameter to be determined, the temperature compensation functions in different ways. For conductimetric measurements, the measured value is converted to a defined reference temperature. For potentiometric measurements, the slope value is adjusted to the temperature of the test sample but the measured value is not converted.
ProLab 4000 Lists Trademarks used ba75646e02 01/2010 Trademark Owner of the trademark Merck Merck KGaA SCHOTT Schott Glas AG Mettler Toledo Mettler Toledo Fisher Fisher Scientific Company Fluka Fluka AG Radiometer Radiometer Baker Mallinckrodt Baker, Inc. Metrohm Metrohm AG Beckman Beckman Instruments, Inc. Hamilton Hamilton Company Corporation Precisa Precisa Instruments AG Reagecon Reagecon Diagnostics Limited Riedel-de Haen Honeywell International Inc.
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ProLab 4000 Lists Index A J Authorized use .........................................21 Jack field ................................................ 15 B K Battery compartment ..............................187 Blank value addition ...............................128 Key functions .......................................... 12 Keys ....................................................... 12 C L Calibration ISE .................................................103 Conductivity .........................
Index ProLab 4000 Reset ..................................................... 65 RS232 interface ............................ 178, 179 RS232 socket assignment ..................... 196 ISE ................................................ 108 pH ........................................ 81, 83, 85 Z S Zero point of the pH electrode .......... 74, 149 Safe operation ........................................ 22 Safety .................................................... 21 Sample addition .................
ProLab 4000 Appendix Appendix A.19 Firmware update General information With the "Update_ProLab3000_4000" program and a PC you can update the firmware of the ProLab 4000 to the newest version. Available firmware updates can be found on the Internet. Connect the meter to a PC for the update.
Appendix ProLab 4000 11 Program installation Program start Firmware update Connect the ProLab 4000 to a USB interface (virtual COM port) of the PC with the aid of the USB interface cable. or Connect the ProLab 4000 to a serial interface (COM port) of the PC with the aid of the Z390 interface cable. 1 With the installation program, "Install_Update_ProLab3000_4000_Vx_yy_English.exe", install the firmware update program on a PC.
ProLab 4000 Appendix A.20 Menus A.20.1 Main menu File Memory File – – – – – New configuration... Select configuration... View configuration... Delete configuration... Terminate Memory – Manual memory – New... – Select... – Display... – Delete... – Automatic memory – New... – Display... – Delete... – ISE method memory – New... – Select... – Display... – Delete... – Calibration memory – Display... – Delete... – Recorder – Display... – Delete...
Appendix ProLab 4000 System System – Data output... – Baud – Output format (ASCII, CSV) – – Header – Autom. printout... – Reset – Measuring – Autom. stability control – Temperature unit – Connect Ref1/Ref2 – Signal On – Country and language... – Country – Language – Date and time... – Color code... – Activate lock Window 214 Window – Channels... – Maximize recorder User User – Administration... – Change password... Help Help – Help topics – Meter info... – Sensor info... – System info...
ProLab 4000 Appendix A.20.2 pH sensor menu Measuring Measuring – pH resolution – High – Medium – Low – – – – Calibration Alternative TP Setting of man. temp... Reset pH Recorder... – Calibration – pH calibration type – AutoCal – Buffer sets – VariCal – Slope in (mV/pH / %) – Zero point in (mV / pH) – Calibration interval... – Calibration record... – Calibration history...
Appendix ProLab 4000 A.20.3 U sensor menu Measuring Measuring – High resolution – Alternative TP – Setting of man. temp... – Determine reference... – Recorder... A.20.4 dU sensor menu Measuring Measuring – High resolution – Alternative TP – Setting of man. temp... – Referenz – anderer U-Kanal – Referenzwert – Determine reference... – Recorder...
ProLab 4000 Appendix A.20.5 ISE sensor menu Measuring Measuring – ISE settings – Units – Ion type – Blank value correction – Reference measurement – Input reference value... – Stability control – High – Medium – Low – ISE methods – Standard addition... – Double standard addition... – Standard subtraction... – Sample addition... – Sample subtraction... – Blank value addition... – Alternative TP – Setting of man. temp... Calibration ba75646e02 01/2010 Calibration – Calibration record...
Appendix ProLab 4000 A.20.6 Cond sensor menu Measuring Measuring – Cell constant – Calibrated cell constant – Adjustable cell constant... – Adjustable LF 313T... – LF 213T – Temperature coefficient – TC nLF – TC Lin... – TC off – TC nLin1......TC nLin4... – Reference temperature – Tref 25 – Tref 20 – Tref Var – – – – – Calibration 218 TDS factor setting... Alternative TP Setting of man. temp... Reset Cond Recorder Calibration – Calibration interval... – Calibration record... – Calibration history...
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