Operating manual pH 3210 pH HOL D Men u AR 6.09 3 15.1 1 08:3.2008 7 25.
pH 3210 Accuracy when going to press Copyright 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 meter. 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.
pH 3210 Contents pH 3210 - Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 1.2 1.3 2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.1 2.2 3 4.3 4.4 12/2008 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2.1 Inserting the batteries. . . . . . . . . . . . . . . . . . . . . 3.2.
Contents pH 3210 4.5 4.6 5 49 50 51 52 53 53 54 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 55 5.1 5.2 5.3 5.4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1.1 Replacing the batteries . . . . . . . . . . . . . . . . . . . . Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disposal . . . . . . . . . . . . . . . . . . . . . . .
pH 3210 Overview 1 Overview The compact pH 3210 precision pH meter enables you to perform pH measurements rapidly and reliably. The pH 3210 provides the maximum degree of operating comfort, reliability and measuring certainty for all applications. The proven calibration procedures and automatic stability control function (AR) support your work with the pH meter. 3 pH HOL D Men u AR 6.09 3 15.1 1 08:3.2008 7 25.
Overview pH 3210 1.1 Keypad F1 F2 M CAL AR RCL STO ENTER pH 3210 In this operating manual, keys are indicated by brackets <..> . The key symbol (e.g. ) generally indicates a short keystroke (under 2 sec) in this operating manual. A long keystroke (approx. 2 sec) is indicated by the underscore behind the key symbol (e.g. ). _ F2 Softkey providing situation dependent functions , e.g.
pH 3210 Overview ENTER AR : : Opens the menu for measurement settings / confirms entries Opens the menu for system settings Freezes the measured value (HOLD function) Switches the AutoRead measurement on or off _ 1.2 Display 4 3 14 0 pH 6.093 2 25.0 °C 1 HOLD AR Menu Function display indicators ba75793e02 12/2008 22.09.
Overview pH 3210 1.3 Socket field 1 4 2 3 Connectors: 1 pH electrode 2 Reference electrode 3 Temperature sensor 4 Service interface Caution Only connect sensors to the meter that cannot return any voltages or currents that are not allowed (> SELV and > current circuit with current limiting). Almost all customary sensors fulfill these conditions.
pH 3210 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 meter. 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 field and in the laboratory.
Safety pH 3210 2.1 Authorized use This meter is authorized exclusively for pH and ORP measurements in a laboratory or field environment. The technical specifications as given in chapter 7 TECHNICAL DATA must be observed. Only the operation and running of the meter according to the instructions given in this operating manual is authorized. Any other use is considered unauthorized. 2.
pH 3210 Safety Safe operation If safe operation is no longer possible, the meter must be taken out of service and secured against inadvertent operation! Safe operation is no longer possible if the meter: z has been damaged in transport z has been stored under adverse conditions for a lengthy period of time z is visibly damaged z no longer operates as described in this manual. If you are in any doubt, please contact the supplier of the meter.
Safety 12 pH 3210 ba75793e02 12/2008
pH 3210 Commissioning 3 Commissioning 3.1 Scope of delivery z pH meter, pH 3210 z 4 batteries 1.5 V Mignon type AA z Short instructions z CD-ROM with detailed operating manual 3.2 Initial commissioning Perform the following activities: z Insert the supplied batteries z Switch on the meter z Set the date and time 3.2.1 Inserting the batteries 1 Unscrew the two screws (1) on the underside of the meter. 2 Open the battery compartment (2) on the underside of the meter.
Commissioning pH 3210 Note Alternatively, you can also use Ni-MH rechargeable batteries (type Mignon AA). In order to charge the batteries, an external charging device is required. Caution Make sure that the poles of the batteries are positioned correctly. The ± signs on the batteries must correspond to the ± signs in the battery compartment. 4 3.2.2 1 Close the battery compartment (2) and tighten the screws (1). Switching on the meter Press the key. The meter performs a self-test.
pH 3210 Operation Switching on 4 Operation 4.1 Switching on the meter Press the key. The meter performs a self-test. The display shows the manufacturer's logo while the self-test is being performed. The measured value display appears. pH 6.949 25.0 °C Menu Switching off 22.09.2008 08:00 Press the key. Automatic switch-off The instrument has an automatic switch-off function in order to save the batteries (see section 4.3.1).
Operation pH 3210 4.2 General operating principles This section contains basic information on the operation of the pH 3210. Operating elements, display Operating modes, navigation An overview of the operating elements and the display is given in section 1.1 and section 1.2. An overview of the operating modes and navigation of the pH 3210 is given in section 4.2.1 and section 4.2.2. 4.2.
pH 3210 Operation 4.2.2 Measured value display Navigation In the measured value display, you can z open the respective measuring menu with (short keystroke). z open the Storage & config menu with the sensor-independent settings by pressing (long keystroke, approx. 2 s on ). _ z change the display in the selected measuring window (e. g. pH <−> mV) by pressing . Menus and dialogs The menus for settings and dialogs in procedures contain further submenus.
Operation pH 3210 z Functions Functions are designated by the name of the function. They are immediately carried out by confirming with . Example: Display the Calibration record function. pH Calibration record Buffer: One point calibration: Calibration interval: Unit for slope: AutoCalTEC Yes 7d mV/pH i 2.00 4.01 7.00 10.01 Back Messages 22.09.2008 08:00 Information is marked by the i symbol. It cannot be selected.
pH 3210 Operation 4.2.3 Example 1 on navigation: Setting the language 1 Press the key. The measured value display appears. The instrument is in the measuring mode. pH 6.949 25.0 °C Menu 2 22.09.2008 08:00 _ Using /[Menu] open the Storage & config menu. The instrument is in the setting mode. Storage & config System Data storage Back ba75793e02 12/2008 22.09.2008 08:00 3 Select the System submenu with <▲><▼>. The current selection is displayed with a frame.
Operation pH 3210 System General Measurement Interface Clock Service information Reset Back 22.09.2008 08:00 5 Select the General submenu with <▲><▼>. The current selection is displayed with a frame. 6 Open the General submenu with . General Language: Beep: Illumination: Contrast: Switchoff time: Back 7 Deutsch Off On 50 % 1h 22.09.2008 08:00 Open the setting mode for the Language with .
pH 3210 Operation 9 ba75793e02 12/2008 Confirm the setting with . The meter switches to the measuring mode. The selected language is active.
Operation pH 3210 4.2.4 Example 2 on navigation: Setting the date and time The meter has a clock with a date function. The date and time are indicated in the status line of the measured value display. When storing measured values and calibrating, the current date and time are automatically stored as well. The correct setting of the date and time and date format is important for the following functions and displays: z Current date and time z Calibration date z Identification of stored measured values.
pH 3210 ba75793e02 Operation 12/2008 4 Change and confirm the setting with <▲><▼> and . The minutes are highlighted. 5 Change and confirm the setting with <▲><▼> and . The seconds are highlighted. 6 Change and confirm the setting with <▲><▼> and . The time is set. 7 If necessary, set the Date and Date format. The setting is made similarly to that of the time. 8 If necessary, select and set the Date with <▲><▼> and .
Operation pH 3210 4.3 Sensor-independent settings The Storage & config menu comprises the following settings: z System (see section 4.3.1). z Data storage (see section 4.3.1) 4.3.
pH 3210 Operation Menu item Setting Description System /Reset - Resets the system settings to the default values. For details, see section 4.6.2 4.3.2 Data storage This menu contains all functions to display, edit and erase stored measured values and calibration records. Note Detailed information on the storage functions of the pH 3210 is given in section 4.5.
Operation pH 3210 4.3.3 Automatic Stability control The automatic 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 automatic Stability control function (see section 4.3.1).
pH 3210 Operation 4.4 pH value / ORP voltage 4.4.1 General information You can measure the following variables: z pH value [ ] z ORP [mV] Temperature measurement For reproducible pH measurements, it is essential to measure the temperature of the test sample. You have the following possibilities to measure the temperature: z Automatic measurement of the temperature by the temperature sensor (NTC30 or Pt1000) integrated in electrode. z Manual determination and input of the temperature.
Operation pH 3210 4.4.2 Measuring the pH value 1 Perform the preparatory activities according to section 4.4.1. 2 Immerse the pH electrode in the test sample. pH 6.949 24.8 °C Menu 3 Stability control (AutoRead ) 22.09.2008 08:00 Select the pH or mV display with . The stability control function (AutoRead) continually checks the stability of the measurement signal. The stability has a considerable impact on the reproducibility of measured values.
pH 3210 Operation Criteria for a stable measured value The Stability control function checks whether the measured values are stable within the monitored time interval. Measured parameter Time interval Stability in the time interval pH value 15 seconds Δ pH: better than 0.01 The minimum duration until a measured value is assessed as stable is the monitored time interval. The actual duration is mostly longer.
Operation pH 3210 4.4.3 Measuring the ORP Note ORP electrodes are not calibrated. However, you can check ORP electrodes using a test solution. 1 Perform the preparatory activities according to section 4.4.1. 2 Submerse the ORP electrode in the sample. U 157.0 mV 24.8 °C Menu 3 Stability control (AutoRead ) 22.09.2008 08:00 Select the mV display with . The stability control function (AutoRead) continually checks the stability of the measurement signal.
pH 3210 Operation prematurely terminated, the current measurement data are not output to the interface. 3 Criteria for a stable measured value Release the frozen measured value again with or . The [AR] status display disappears. The display switches back to the previous representation. The Stability control function checks whether the measured values are stable within the monitored time interval.
Operation pH 3210 4.4.4 Overview Settings for pH and ORP measurements The following settings are possible for pH and ORP measurements: z Resolution z Calibration interval z Buffers for calibration z Unit of the temperature z Automatic stability control z Unit for slope z Calibration record (display) Settings 32 The settings are made in the measuring menu of the pH/ORP measurement.
pH 3210 ba75793e02 Operation 12/2008 Menu item Possible setting Description Temperature unit °C °F Temperature unit, degrees Celsius or degrees Fahrenheit. All temperatures are displayed with the selected unit. Resolution pH 0.001 0.01 0.1 Resolution of the pH display: Resolution mV 0.1 1 Resolution of the mV display: Stability control On / Off Switches on or off the automatic stability control during measurement (see section 4.3.
Operation pH 3210 4.4.5 Why calibrate? When do you have to calibrate? Buffer sets for calibration 34 pH calibration pH combination electrodes age. This changes the zero point (asymmetry) and slope of the pH combination electrode. As a result, an inexact measured value is displayed. Calibration determines and stores the current values of the zero point and slope of the electrode. Thus, you should calibrate at regular intervals.
pH 3210 ba75793e02 Operation 12/2008 No. Buffer set* pH values at 7 Merck 4 * 2.000 4.000 7.000 10.000 20°C 8 Merck 5* 4.010 7.000 10.000 25 °C 9 DIN 19267 1.090 4.650 6.790 9.230 25 °C 10 Mettler Toledo USA * 1.679 4.003 7.002 10.013 25 °C 11 Mettler Toledo EU * 1.679 4.003 7.002 10.013 25 °C 12 Fisher * 2.007 4.002 7.004 10.002 25 °C 13 Fluka BS * 4.006 6.984 8.957 25 °C 14 Radiometer * 1.678 4.005 7.000 9.180 25 °C 15 Baker * 4.006 6.991 10.
Operation pH 3210 No. Buffer set* pH values at 18 Hamilton Duracal * 4.005 7.002 10.013 25 °C 19 Precisa * 3.996 7.003 8.999 25 °C 20 Reagecon TEC * 2.000 4.010 7.000 10.000 25 °C 21 Reagecon 20 * 2.000 4.000 7.000 10.000 13.000 20°C 22 Reagecon 25 * 2.000 4.000 7.000 10.000 13.000 25 °C 23 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.
pH 3210 Operation Calibration points Calibration can be performed using one to five buffer solutions in any order (single-point to five-point calibration). The meter determines the following values and calculates the calibration line as follows: 1-point Determined values Displayed calibration data Asy z Zero point = Asy z Slope = Nernst slope (-59.16 mV/pH at 25 °C) 2-point 3-point to 5-point Asy Slp. z Zero point = Asy Asy Slp. z Zero point = Asy z Slope = Slp. z Slope = Slp.
Operation pH 3210 Display Calibration record Zero point [mV] Slope [mV/pH] + -25 ... +25 -61 ... -60.5 or -57 ... -56 - -30 ... +30 -62 ... -61 or -56 ... -50 < -30 or > 30 ... -62 or ... -50 Clean the combination electrode according to the electrode operating manual Error Error Eliminate the error according to chapter 6 WHAT TO DO IF...
pH 3210 Operation Preparatory activities Perform the following preparatory activities when you want to calibrate: 1 Connect the pH combination electrode to the meter. The pH measuring window is displayed. 2 Keep the buffer solutions ready. Adjust the temperature of the buffer solutions, or measure the current temperature, if you measure without a temperature sensor. 4.4.6 Calibration interval The calibration evaluation is indicated on the display as a sensor symbol.
Operation pH 3210 4.4.7 Carrying out an automatic calibration (AutoCal) Make sure that the correct buffer set is selected in the sensor menu, Buffer submenu (see page 32). Of the selected buffer set, use one to five buffer solutions of your choice in ascending or descending order. Calibration with Technical buffers is described below (TEC). With other buffer sets, other nominal buffer values are displayed. Apart from that, the procedure is identical.
pH 3210 Operation TEC pH 181.3 4.010 mV 24.8 °C AutoCal AR 22.09.2008 08:00 6 Wait for the end of the measurement with stability control or accept the calibration value with . The calibration display for the next buffer appears. TEC pH 181.3 2 mV 24.8 °C AutoCal 22.09.2008 08:00 7 If necessary, terminate the calibration as a single-point calibration with . The calibration record is displayed. Note For single-point calibration, the instrument uses the Nernst slope (-59.
Operation pH 3210 TEC pH 24.8 °C 1.3 7.000 mV AutoCal AR 22.09.2008 08:00 12 Wait for the measurement with stability control to be completed or terminate the stability control and take over the calibration value with . The calibration display for the next buffer appears. TEC pH 24.8 °C 1.3 3 mV AutoCal 22.09.2008 08:00 Continuing with threeto five-point calibration (Buffer TEC) 42 13 If necessary, terminate the calibration as a two-point calibration with .
pH 3210 Operation TEC pH 10,010 -178.3 mV 24.8 °C AutoCal AR 22.09.2008 08:00 18 Use to finish calibration or switch to calibration with the next buffer with . Note Calibration is automatically completed after the last buffer of a buffer set has been measured. Then the calibration record is displayed. Note The calibration line is determined by linear regression.
Operation pH 3210 4.4.8 Single-point calibration Two-point calibration Carrying out a manual calibration (ConCal) 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 one or two buffer solutions for this procedure: z first buffer solution: pH 7.0 ± 0.5 z any other buffer solution In the sensor menu, submenu Buffer, ConCal must be set as the buffer set (see section 4.4.4).
pH 3210 Operation Asymmetry pH 24.8 °C 1 7.000 ConCal 22.09.2008 08:00 7 Wait for the measurement with stability control to be completed. Set the nominal buffer value for the measured temperature with <▲><▼>. 8 Take over the calibration value for the asymmetry with . The calibration display for the next buffer appears. pH 2 24.8 °C 7.000 ConCal 22.09.2008 08:00 9 If necessary, terminate the calibration as a single-point calibration with . The calibration record is displayed.
Operation Continuing with twopoint calibration pH 3210 10 Thoroughly rinse the combination electrode with distilled water. 11 Immerse the electrode in buffer solution 2. 12 When measuring without temperature sensor: Measure the temperature of the buffer manually and enter it with <▲><▼>. 13 Start the measurement with . The measured value is checked for stability (stability control). 14 Wait for the measurement with stability control to be completed.
pH 3210 Operation 4.4.9 Displaying the calibration record Displaying calibration records The calibration record of the last calibration is to be found under the menu item, Calibration / Calibration record. To open it in the measured value display, press the key.
Operation pH 3210 4.4.10 Continuous measurement control (CMC function) The continuous measurement control (CMC function) enables to quickly and safely evaluate the current measured value at a glance. After each successful calibration, the scale of the pH measuring range is displayed in the measured value display. Here you can very easily see whether or not the current measured value is in the calibrated part of the measuring range. The following information is displayed: 1 2 pH 14 0 6.093 3 4 25.
pH 3210 Operation 4.5 Storage You can transmit measured values (datasets) to the data storage: z Manual storage (see section 4.5.1) Measurement dataset A complete dataset consists of: z Date/time z Measured value of the connected sensor z Measured temperature value of the connected sensor z AutoRead info: AR appears with the measured value if the AutoRead criterion was met while storing (stable measured value). Otherwise, the AR display is missing.
Operation pH 3210 4.5.1 Manual storage You can transmit a measurement dataset to the data storage as follows: 1 Press the key shortly. The menu for manual storage appears. Manual data storage Data record: 4 From 200 30.10.2008 11:24:16 pH 7.000 24.8 °C AR +++ ID number: Continue Back 2 If the storage is full 1 22.09.2008 08:00 If necessary, change and confirm the ID number (1 ... 10000) with <▲><▼> and . The dataset is stored. The instrument switches to the measured value display.
pH 3210 Operation 4.5.2 Editing the measured value storage The contents of the manual or automatic measurement data storage can be shown on the display. The measurement data storage has a function to erase the entire contents. Editing the data storage Settings The storage is edited in the menu, Storage & config/ Data storage. To open the Storage & config menu, press the /[Menu] key in the measured value display.
Operation pH 3210 following options: z Switch directly to the measured value display with . z Quit the display and move to the next higher menu level with / [Back]. 4.5.3 Erasing the measurement data storage How to erase the measurement data storage is described in section 4.5.2 EDITING THE MEASURED VALUE STORAGE.
pH 3210 Operation 4.6 Reset You can reset (initialize) all sensor settings and sensor-independent settings separately from each other. 4.6.1 Resetting the measurement settings Note The calibration data are reset to the default settings together with the measuring parameters. Recalibrate after performing a reset. pH The following settings for pH measurements are reset to the default settings with the Reset function: Setting Default settings Buffer AutoCalTEC Cal.
Operation pH 3210 4.6.2 Resetting the system settings The following system settings can be reset to the delivery status: Setting Default settings Language English Temperature unit °C Beep On Contrast 50 % Illumination On Switchoff time 1h The system settings are reset in the menu, Storage & config / System / Reset. To open the Storage & config menu, press the /[Menu] key in the measured value display.
pH 3210 Maintenance, cleaning, disposal 5 Maintenance, cleaning, disposal 5.1 Maintenance The only maintenance activity required is replacing the batteries. Note See the relevant operating manuals of the combination electrodes for instructions on maintenance. 5.1.1 Replacing the batteries 1 Unscrew the two screws (1) on the underside of the meter. 2 Open the battery compartment (2) on the underside of the meter. 1 2 3 Remove the four batteries from the battery compartment.
Maintenance, cleaning, disposal pH 3210 battery compartment. 5 5.2 Close the battery compartment (2) and tighten the screws (1). Cleaning Occasionally wipe the outside of the meter with a damp, lint-free cloth. Disinfect the housing with isopropanol as required. Caution The housing is made of synthetic material (ABS). Thus, avoid contact with acetone or similar detergents that contain solvents. Remove any splashes immediately. 5.3 Packing This meter is sent out in a protective transport packing.
pH 3210 What to do if... 6 Error message OFL, UFL Error message Error What to do if...
What to do if...
pH 3210 What to do if...
What to do if...
pH 3210 Technical data Dimensions Weight Mechanical structure 7 Technical data 7.1 General data approx. 180 x 80 x 55 mm approx. 0.4 kg Type of protection IP 67 Electrical safety Protective class III Test certificates CE Ambient conditions Power supply Sensor input Guidelines and norms used ba75793e02 12/2008 Storage - 25 °C ... + 65 °C Operation -10 °C ... + 55 °C Climatic class 2 Batteries 4 x 1.
Technical data pH 3210 7.2 Measuring ranges, resolution Measuring ranges, resolution, accuracy Variable Measuring range Resolution pH - 2.0 ... + 20.0 0.1 - 2.00 ... + 20.00 0.01 - 2.000 ... + 19.999 0.001 - 1200.0 ... + 1200.0 0.1 - 2500 ... + 2500 1 T [°C] - 5.0 ... + 105.0 0.1 T [°F] 23.0 ... + 221.0 0.1 Variable Range Increment Tmanual [°C] - 25 ... + 130 1 Tmanual [°F] -13 ... + 266 1 Variable Accuracy Temperature of the test sample - 2.0 ... + 20.0 ± 0.1 + 15 °C .
pH 3210 Technical data FCC Class A Equipment Statement Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Technical data 64 pH 3210 ba75793e02 12/2008
pH 3210 Lists 8 Lists This chapter provides additional information and orientation aids. Specialist terms Index 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. The index will help you to find the topics that you are looking for. Glossary Adjusting To manipulate a measuring system so that the relevant value (e. g.
Lists pH 3210 Molality ORP voltage The ORP is caused by oxidizing or reducing substances dissolved in water, if these substances become effective at an electrode surface (e. g. a gold or platinum surface). pH value The pH is a measure of the acidic or basic effect of an aqueous solution. It corresponds to the negative decadic logarithm of the molal hydrogen ions activity divided by the unit of the molality. The practical pH value is the value of a pH measurement.
pH 3210 Lists Index A Authorized use . . . . . . . . . . . . . . . . . . . . . . 10 Automatic switch-off . . . . . . . . . . . . . . . . . . 15 AutoRead pH . . . . . . . . . . . . . . . . . . . . . . . . . 28, 30 B Measuring ORP . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Measuring menu pH/ORP . . . . . . . . . . . . . . . . . . . . . . . . 32 Menus (navigation) . . . . . . . . . . . . . . . . . . 17 Messages . . . . . . . . . .
Lists 68 pH 3210 ba75793d02 12/2008
Wissenschaftlich-Technische Werkstätten GmbH Dr.-Karl-Slevogt-Straße 1 D-82362 Weilheim Germany Tel: Fax: E-Mail: Internet: +49 (0) 881 183-0 +49 (0) 881 183-100 +49 (0) 881 183-420 Info@WTW.com http://www.WTW.
