Operating manual handylab multi 12 79 17 M CAL 2 6 ARng O mg °C /l TP STO O RCL AR pH/Dissolved Oxygen/Conductivity Pocket Meter ba75371e03 11/2009
Cond 330i/340i Accuracy when going to press Warranty The use of advanced technology and the high quality standard of our instruments are the result of 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.
handylab multi 12 List of contents handylab multi 12 - List of contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 1.2 1.3 1.4 1.5 1.6 2 4.3 4.4 4.5 4.6 11/2009 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 15 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 4.1 4.
List of contents handylab multi 12 4.7 4.8 4.9 5 4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 6.1 6.2 6.3 6.4 7 54 54 56 56 57 61 Maintenance, cleaning, disposal . . . . . .
handylab multi 12 Overview 1 Overview 1.1 General features The compact precision handheld meter handylab multi 12 enables you to carry out pH measurements, dissolved oxygen (D. O.) measurements and conductivity measurements quickly and reliably. The handylab multi 12 handheld meter provides the maximum degree of operating comfort, reliability and measuring certainty for all applications.
Overview handylab multi 12 1.2 Keypad M STO CAL RCL AR RUN/ENTER Key functions M Select the measured variable : – pH value / ORP voltage – D. O. concentration / D. O.
handylab multi 12 Overview 1.3 Display Status display TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP Sensor symbol 1888 Baud Time Day.Month No. Year Ident 8 8 .8 Meas. value display Function and temperature display C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 1.4 Jack field 5 4 1 ba75371e03 11/2009 2 3 1 D. O.
Overview handylab multi 12 1.5 Operating structure The following overview diagram shows which keys you have to press to select between the different measuring modes: Note When a D. O. probe or a conductivity measuring cell with a temperature probe is connected, the measuring instrument recognizes the probe or measuring cell and automatically switches to the oxygen measuring mode or conductivity measuring mode last selected.
handylab multi 12 Overview 1.6 Dimensions and weight Technical data Length [mm] 172 Width [mm] 80 Height [mm] 37 Weight [kg] approx. 0.3 Type of protection IP 66 Electrical safety Protective class III Test certificates cETLus, CE Mechanical structure Ambient conditions pH/ORP measuring ranges Precision of pH/ORP (± 1 digit) pH correction function Oxi measuring ranges ba75371e03 11/2009 Storage - 25 °C ... + 65 °C Operation -10 °C ...
Overview Precision of Oxi (± 1 digit) Correction functions of Oxi Measuring ranges of Conductivity Precision of Conductivity (± 1 digit) 10 handylab multi 12 mg/l % Measuring range II Resolution 0 ... 90.0l 0.1 0 ... 600 1 Concentration ± 0.5 % of measured value at ambient temperature of 5 °C ... 30 °C Saturation ± 0.5 % of measured value when measuring in the range of ± 10 K around the calibration temperature Temperature compensation < 2 % at 0 ... 40 °C T [°C] ± 0.
handylab multi 12 Cell constant, calibrating Reference temperature of Conductivity Serial interface Power supply ba75371e03 11/2009 Overview C [cm-1] 0.450 ... 0.500 Tref Can be set to 20 °C or 25 °C Automatic switchover if a PC or printer is connected. Type RS232, data output Baud rate Can be set to 1200, 2400, 4800, 9600 Baud Data bits 8 Stop bit 2 Parity None Handshake RTS/CTS + Xon/Xoff Cable length Max. 15 m Batteries 4 x 1.
Overview Applicable guidelines and norms handylab multi 12 EMC EC guideline 2004/108/EC EN 61326-1 EN 61000-3-2 EN 61000-3-3 FCC Class A Instrument safety EC guideline 2006/95/EC EN 61010-1 ANSI/UL 61010-1 CAN/CSA-C22.2 No. 61010-1 Climatic class VDI/VDE 3540 Type of protection EN 60529 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.
handylab multi 12 Safety 2 Safety This operating manual contains basic instructions that you must follow during the commissioning, operation and maintenance of the measuring instrument. Consequently, all responsible personnel must read this operating manual carefully before working with the measuring system. The operating manual must always be available within the vicinity of the measuring system. Target group The measuring instrument was developed for work in the field and in the laboratory.
Safety handylab multi 12 2.2 General safety instructions This instrument is built and inspected according to the relevant guidelines and norms for electronic measuring instruments (see section 1.6 TECHNICAL DATA). It left the factory in a safe and secure technical condition.
handylab multi 12 Commissioning 3 Commissioning 3.1 Scope of delivery z handylab multi 12 handheld meter z Operating manual and short operating manual z 4 batteries, 1.5 V Mignon type AA (in the instrument) 3.2 Initial commissioning Perform the following activities: z Set the date and time z Connect the plug-in power supply (optional) Setting the date and time ba75371e03 11/2009 1 Press the key and hold it down. 2 Press the key. The display test appears briefly on the display.
Commissioning Connecting the plug-in power supply handylab multi 12 You can either operate the measuring instrument with batteries or with the plug-in power supply. The plug-in power supply supplies the measuring instrument with low voltage (12 VDC). This saves the batteries. Warning The line voltage at the operating site must lie within the input voltage range of the original plug-in power supply (see section 1.6 TECHNICAL DATA). Warning Use original plug-in power supplies only (see section 1.
handylab multi 12 Operation 4 Operation 4.1 Switching on the measuring instrument 1 Measuring mode when switching on Press the key. The display test appears briefly on the display. After this, the measuring instrument automatically switches to the measuring mode. Connected sensor Measuring mode No sensor or pH/ORP electrode pH or ORP measurement (depending on the last selected setting) D. O.
Operation Preparatory activities handylab multi 12 4.2 pH value / ORP voltage 4.2.1 General information Perform the following preparatory activities when you want to measure: 1 Connect the pH electrode to the measuring instrument. If necessary, press the key repeatedly until the status display pH (pH measurement) or U (measurement of the ORP voltage) appears.
handylab multi 12 Temperature measurement in pH measurements Operation You can perform pH measurements with or without a temperature probe as well as with the temperature probe of an oxygen sensor or a conductivity measuring cell. The measuring instrument recognizes which sensors are connected and switches automatically to the correct mode for the temperature measurement. The following cases are distinguishable.
Operation handylab multi 12 4.2.2 Measuring the pH value 1 Perform the preparatory activities according to section 4.2.1. 2 Immerse the pH electrode in the test sample. 3 Press the <▲> <▼> keys until pH appears in the status display. The pH value appears on the display. TDS U pHO S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1699 Baud Time Day.Month No.
handylab multi 12 Operation 3 Start AutoRead with . AR flashes until a stable measured value is reached. This measured value is transmitted to the interface. 4 If necessary, start the next AutoRead measurement with . 5 To terminate the AutoRead function: Press the key. Note The current AutoRead measurement can be terminated at any time (accepting the current value) by pressing . 4.2.3 Measuring the ORP voltage In conjunction with an ORP electrode, e.g.
Operation handylab multi 12 4.2.4 Why calibrate? When to calibrate? pH calibration pH electrodes age. This changes the asymmetry (zero point) and slope of the pH electrode. As a result, an inexact measured value is displayed. Calibration determines the current values of the asymmetry and slope of the electrode and stores them in the measuring instrument. Thus, you should calibrate at regular intervals.
handylab multi 12 Operation Sample printout: CALIBRATION PROTOCOL 02.03.01 14:19 Device No.: 12345678 Calibration pH Cal time: 01.03.01 / 15:20 Cal interval: 7d AutoCal TEC Tauto Buffer 1 2.00 Buffer 2 4.01 Buffer 3 7.00 * Buffer 4 10.01 C1 184.1 mV 25.0°C C2 3.0 mV 25.0°C S1 -59.4 mV/pH ASY1 4 mV Calibration evaluation After calibrating, the measuring instrument automatically evaluates the calibration. The asymmetry and slope are evaluated separately. The worst evaluation appears on the display.
Operation Preparatory activities AutoCal TEC handylab multi 12 1 Connect the pH electrode to the measuring instrument. If necessary, press the key repeatedly until the status display pH (pH measurement) or U (measurement of the ORP voltage) appears. 2 Keep the buffer solutions ready. 3 Adjust the temperature of the solution and measure the current temperature if the measurement is made without the use of a temperature probe (the TP display indicator is missing from the display).
handylab multi 12 Operation 2 If required, enter the temperature of the first buffer solution, while keeping the key depressed, using <▲> <▼>. 3 Immerse the pH electrode in the first buffer solution. 4 Press the key. The AR display indicator flashes. The electrode voltage (mV) or the buffer nominal value appears on the display. Example: TDS UpH pH O S Sal mV mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1733 Baud Time Day.Month No.
Operation handylab multi 12 9 Press the key. The AR display indicator flashes. The electrode voltage (mV) or the buffer nominal value appears on the display. Example: TDS UpH pH O S Sal mV mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1184 Baud Time Day.Month No. Year Ident 0248 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 10 TDS UpH pH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1401 Baud Time Day.Month No.
handylab multi 12 Operation 4.3 Dissolved oxygen 4.3.1 General information You can measure the following variables: z D. O. concentration z D. O. saturation The measuring instrument is supplied with the following functions: z AutoRange (automatic switchover of the measurement range), z The AutoRead function (drift control) for checking the stability of the measurement signal. This ensures the reproducibility of the measuring signal.
Operation handylab multi 12 4.3.2 Measuring the D. O. concentration When measuring the concentration of test samples with a salt content of more than 1 g/l, a salinity correction is required. Note How to enter the current salt content is described in section 4.3.6 SALT CONTENT CORRECTION on page 34. Switching the salt content correction on or off, see below. To measure the D. O.
handylab multi 12 Operation TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1542 Baud Time Day.Month No. Year Ident 8176 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 4 4.3.3 While pressing the key, switch off the salt content correction with <▼>. The SAL display indicator is no longer displayed. Measuring the D. O. saturation You can measure the D. O.
Operation handylab multi 12 4.3.4 AutoRead AR (Drift control) The AutoRead function (drift control) checks the stability of the measurement signal. The stability has a considerable impact on the reproducibility of the measured values. 1 Call up the measuring mode with and/or <▲> <▼> . 2 Activate the AutoRead function with . The current measured value is frozen (hold function). 3 Start AutoRead with . AR flashes until a stable measured value is reached.
handylab multi 12 Operation 4.3.5 Why calibrate? When to calibrate? D. O. calibration D. O. probes age. This changes the slope of the D. O. probe. Calibration determines the current slope of the probe and stores this value in the instrument. z After connecting another D. O. probe z When the probe symbol flashes (after the calibration interval has expired). Calibration procedure The calibration is performed in water vapor-saturated air. Use an air calibration vessel (accessories) for the calibration.
Operation Probe evaluation handylab multi 12 After the calibration, the measuring instrument evaluates the current status of the probe against the relative slope. The evaluation appears on the display. The relative slope has no effect on the measuring accuracy. Low values indicate that the electrolyte will soon be depleted and the probe will have to be regenerated. Display Relative slope S = 0.8 ... 1.25 S = 0.7 ... 0.8 S = 0.6 ... 0.7 E3 Eliminate the error according to chapter 6 WHAT TO DO IF...
handylab multi 12 Operation TDS UpH O S 1C AL Baud Time Day.Month No. Year Ident Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 8176 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 5 Press the key. AutoRead is active, AR flashes. TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal 1088 Baud Time Day.Month No.
Operation handylab multi 12 4.3.6 Salt content correction A salt content correction is required in the oxygen concentration measurement of samples with a salt content of more than 1 g/l. To do this, you have to enter the salinity equivalent of the test sample (range 0.0 - 70.0) and to switch on the salinity correction. Note With the handylab multi 12 handheld meter, you can measure the salinity. How to proceed is described in section 4.4.3 MEASURING THE SALINITY on page 37.
handylab multi 12 Operation 4.4 Conductivity 4.4.1 General information Caution When connecting an earthed PC/printer, measurements cannot be performed in earthed media as incorrect values would result. The RS232 interface is not galvanically isolated. Preparatory activities Temperature probe Perform the following preparatory activities when you want to measure: 1 Connect a conductivity measuring cell to the measuring instrument.
Operation Checking the cell constant handylab multi 12 1 Press the key repeatedly until CAL disp appears on the display. TDS UpH O S 1C AL Baud Time Day.Month No. Year Ident Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP dISP C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 2 Press the repeatedly until the last calibrated cell constant is displayed, e. g. 0.472 1/cm. TDS UpH O S 1C C L Baud Time Day.Month No.
handylab multi 12 Operation 4.4.2 Measuring the conductivity You can carry out the conductivity measurements as follows: 1 Perform the preparatory activities according to section 4.4.1 page 35. 2 Immerse the conductivity measuring cell in the test sample. 3 Press the < ▲> <▼> keys until in the status display, ӕ and the unit μS/cm appears. The conductivity value appears on the display. TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1530 Baud Time Day.Month No.
Operation handylab multi 12 4.4.4 AutoRead AR (Drift control) The AutoRead function (drift control) checks the stability of the measurement signal. The stability has a considerable effect on the reproducibility of the measured value. 1 Call up the ӕ or SAL measuring mode with and/or <▲ > <▼>. 2 Immerse the conductivity measuring cell in the test sample. 3 Activate the AutoRead function with . The current measured value is frozen (hold function). 4 Start AutoRead with .
handylab multi 12 Operation 4.4.5 Why determine the cell constant? Determining the cell constant (Calibration in the control standard) Aging slightly changes the cell constant, e. g. by coatings. As a result, an inexact measured value is displayed. The original characteristics of the cell can often be restored by cleaning the cell. Calibration determines the current value of the cell constant and stores this value in the instrument. Thus, you should calibrate at regular intervals.
Operation Calibration evaluation handylab multi 12 After the calibration, the measuring instrument automatically evaluates the current status of the calibration. The evaluation appears on the display. Cell constant [cm-1] Display 0.450 ... 0.500 cm-1 E3 Eliminate the error according to chapter 6 WHAT TO DO IF... Determining the cell constant Outside the range 0.450 ... 0.
handylab multi 12 Operation TDS UpH O S 1C AL Baud Time Day.Month No. Year Ident Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 0473 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 5 To return to the measuring mode: Press the key. The determined cell constant is taken over for the measurement. Note If the error message E3 appears, refer to chapter 6 WHAT TO DO IF...
Operation handylab multi 12 4.5 Calibration intervals (Int 3, Int 4, Int 5) For each measured variable, a time interval is stored. When it has expired, you will be reminded to calibrate. After a calibration interval has expired, the probe symbol of the relevant measured variable flashes. It is still possible to measure. By calibrating the relevant probe, the function is reset and the interval starts anew.
handylab multi 12 Operation 4.6 Saving data The handylab multi 12 portable measuring instrument has an internal data memory. It can store up to 500 datasets.
Operation handylab multi 12 TDS U pHO S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1699 Baud Time Day.Month No. Year Ident 8242 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL Message StoFull 3 Using <▲> <▼>, enter the required ID number (1 ... 999). 4 Confirm with . The measured values are stored. The instrument changes to the measuring mode. This message appears when all of the 500 storage locations are occupied.
handylab multi 12 Operation 4.6.2 Switching on AutoStore (Int 1) The save interval (Int 1) determines the chronological interval between automatic save processes. After the fixed interval has expired, the current data record is transmitted to the internal storage and to the interface. Switching on AutoStore 1 Press the key and hold it down. 2 Press the key. Int 1 appears on the display. TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1nt 1 Baud Time Day.
Operation handylab multi 12 TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1999 Baud Time Day.Month No. Year Ident Fr e1 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 6 Set the required ID number with <▲> <▼>. 7 Confirm with . The measuring instrument switches to the last active measuring mode and start the measuring and saving procedure. AutoStore flashes on the display.
handylab multi 12 Operation 4.6.3 Outputting the data storage You can output the contents of the data storage: z Stored data on the display z Calibration data on the display z Stored data on the serial interface z Calibration protocol to the interface Outputting stored data on the display 1 Press the key repeatedly until StO dISP appears on the display. TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1ST O Baud Time Day.Month No.
Operation handylab multi 12 Note If you want to search for a certain element of the data record (e.g. date), proceed as follows: Outputting stored data to the interface 1 Using , select the element (e.g. date). 2 Press <▲> or <▼> repeatedly until the required element appears on the display. After approx. 2 s the temperature of the displayed measured value appears. 1 Press the key repeatedly until Sto SEr appears on the display.
handylab multi 12 Operation Sample printout: No. 1: 09.03.01 pH 10.01 Tauto Ident : 47 No. 2: 09.03.01 305 mV Tauto Ident : 6 No. 3: 09.03.01 7.88 mg/l Tauto Ident : 81 No. 4: 09.03.01 7.11 mg/l Tauto SAL = 17.9 Ident : 4 17:10 25 °C AR 17:12 17:24 17.6° C 17:46 17.8° C No. 5: 10.03.01 19:09 2.40 mS/cm 25.3 °C Tauto nLF Tref25 C = 0.475 1/cm Ident : 10 No. 6: 10.03.01 20:48 2.46 mS/cm 25.6 °C Tauto nLF Tref25 C = 0.475 1/cm Ident : 1 ...
Operation Outputting the calibration data on the display handylab multi 12 1 Press the key repeatedly until CAL disp appears on the display. TDS UpH O S 1C AL Baud Time Day.Month No. Year Ident Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP dISP C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 2 Press the key.
handylab multi 12 Operation 4 Press to display the relative slope of the D. O. probe. TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1088 Baud Time Day.Month No. Year Ident 2SL O C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 5 Press to display the cell constant. The displayed value is: z the current, calibrated cell constant (with sensor symbol on the display) or z the fixed cell constant 0.
Operation Outputting the calibration protocol on the interface handylab multi 12 1 Press the key repeatedly until CAL SEr appears on the display. TDS UpH O S 1C AL Baud Time Day.Month No. Year Ident Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP dSER C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 2 Press the key. The calibration protocol for all measured variables is transmitted to the interface.
handylab multi 12 Operation 4.6.4 Clearing the memory With this function, you can delete the stored data records. 500 storage locations will then be available again. Note The Clear memory function only appears when there are data records stored in the memory. Otherwise, the measuring instrument automatically switches to the last active measuring mode. Proceed as follows to clear all data records: 1 Switch off the measuring instrument. 2 Press the key and hold it down.
Operation handylab multi 12 4.7 Transmitting data You have the following possibilities of transmitting data: z One of the following options: – With the AutoStore function (page 45), measured values are periodically saved internally (save interval Int 1) and output on the interface. – With the Data transmission interval function (Int 2), measured values are periodically output on the interface (see below). – AutoStore (Int 1) covers the Data transmission interval (Int 2).
handylab multi 12 Operation 4 Confirm with . The measuring instrument switches to the last active measuring mode. Note When the AutoStore function is active at the same time, the data transmission is performed according to the setting of the save interval (Int 1). Set the save interval (Int 1) to OFF to activate the Data transmission interval (Int 2).
Operation handylab multi 12 4.7.2 PC/external printer (RS232 interface) Via the RS 232 interface, you can transmit the data to a PC or an external printer. Use the Z 395 (PC) or Z 391 (ext. printer) cable. Warning The RS232 interface is not galvanically isolated. When connecting an earthed PC/printer, measurements cannot be performed in earthed media as incorrect values would result.
handylab multi 12 Operation 4.8 Configuration You can adapt the handheld meter to your individual requirements. To do this, the following parameters can be changed (the status on delivery is marked in bold): Baud rate 1200, 2400, 4800, 9600 Air pressure display Current value in mbar (no input possible) Calibration intervals – pH 1 ... 7 ... 999 dInt 3 Date/time Any – O2 1 ... 14 ... 999 dInt 4 – ӕ: 1 ... 180 ... 999 dInt 5 Note You can leave the configuration menu at any time with .
Operation handylab multi 12 TDS pH O S 1C AL Baud Time Day.Month No. Year Ident Sal mV/pH /pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP disp C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL Displaying the air pressure 6 Select the required display during the pH calibration with <▲> <▼>. mV: Display of the current electrode voltage /pH: Display of the buffer nominal value. 7 Confirm with . P mbar appears on the display.
handylab multi 12 Dissolved oxygen calibration interval Operation TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1nt 4 Baud Time Day.Month No. Year Ident d114 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL Conductivity calibration interval 11 Set the required interval in days (d) with <▲> <▼>. 12 Confirm with . Int 5 and the measured variable ӕ appear on the display.
Operation handylab multi 12 Date and time TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1Dis Baud Time Day.Month No. Year Ident 0904 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR 60 17 Set the date of the current day with <▲> <▼>. 18 Confirm with . The date (month) flashes in the display. 19 Set the current month with <▲> <▼>. 20 Confirm with . The year appears on the display. 21 Set the current year with <▲> <▼>.
handylab multi 12 Operation 4.9 Reset You can reset (initialize) the measurement parameters and the configuration parameters separately from one another. Measurement parameters pH O2 Conductivity The following measuring parameters (pH/O2/Cond InI) can be reset to the default condition: Measuring mode pH Asymmetry 0 mV Slope -59.16 mV Measuring mode D. O. concentration Relative slope 1.00 Salinity (value) 0.0 Salinity (function) Off Measuring mode ӕ Cell constant 0.
Operation Resetting the measuring parameters handylab multi 12 1 Press the key and hold it down. 2 Press the key. The setting to reset the pH measuring parameters appears on the display. TDS pHO S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1In I Baud Time Day.Month No. Year Ident 4Yno C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 3 Using <▲> <▼>, switch between no and YES.
handylab multi 12 Operation TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1In I Baud Time Day.Month No. Year Ident 4Yno C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 7 Using <▲> <▼>, switch between no and YES. YES: Resetting the Conductivity measuring parameters. no: Retaining settings. 8 Confirm with . The measuring instrument switches to the configuration parameters.
Operation 64 handylab multi 12 ba75371e03 11/2009
handylab multi 12 Maintenance, cleaning, disposal 5 Maintenance, cleaning, disposal 5.1 Maintenance The measuring instrument is almost maintenance-free. The only maintenance task is replacing the batteries. LoBat indicates that the batteries should be changed. The batteries are then largely depleted. Replacing the batteries 2 1 1 Open the housing after the instrument has been switched off: – Undo the four screws on the underside of the instrument – Pull down the lower cover (1).
Maintenance, cleaning, disposal handylab multi 12 Note For maintenance of electrodes, probes and measuring cells refer to the relevant operating manuals. 5.2 Cleaning Occasionally wipe the outside of the measuring instrument with a damp, lintfree cloth. Disinfect the housing with isopropanol as required. Warning The housing is made of a synthetic material (ABS). Thus, avoid contact with acetone and similar detergents that contain solvents. Remove any splashes immediately. 5.
handylab multi 12 Error message 0FL What to do if... 6 What to do if... 6.
What to do if... handylab multi 12 Buffer solutions No stable measured value – Incorrect buffer solutions – Change calibration procedure – Buffer solutions too old – Use only once.
handylab multi 12 What to do if... 6.
What to do if... handylab multi 12 Measured value too low Cause Remedy – Insufficient flow – Provide flow to the probe Measured value too high Cause Remedy – High amount of dissolved substances – Correct solubility function using the salinity equivalent – Air bubbles bump on the membrane with high velocity – Avoid direct flow to the membrane – The carbon dioxide pressure is too high (> 1 bar) – Measuring not possible 6.
handylab multi 12 What to do if... 6.4 Display LoBat General errors Cause Remedy – Batteries almost empty – Exchange the batteries (see section 5.
What to do if...
handylab multi 12 Lists 7 Lists This chapter provides additional information and orientation aids. Abbreviations Specialist terms Index ba75371e03 11/2009 The list of abbreviations explains the indicators and the abbreviations that appear on the display and in the manual. 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.
Lists handylab multi 12 Abbreviations Conductivity value (international γ) 74 AR AutoRead (drift control) ARng Automatic range switching Measuring instrument measures with highest resolution ASY Asymmetry AutoCal TEC Automatic pH calibration with SI Analytics technical buffer solutions according to DIN 19267 C Cell constant [cm-1] (internat. k) °C Temperature unit, degrees Celsius Cal Calibration Ct... Display indicator during calibration for pH measurements.
handylab multi 12 ba75371e03 11/2009 Lists TP Temperature measurement active (temperature probe) TRef 25/T25 Reference temperature of 25 °C UASY Asymmetry 75
Lists handylab multi 12 Glossary Adjusting To manipulate a measuring system so that the relevant value (e. g. the displayed value) differs as little as possible from the correct value or a value that is regarded as correct, or that the difference remains within the tolerance. Asymmetry Designation for the offset potential of a pH electrode.
handylab multi 12 Lists Measuring system The measuring system comprises all the devices used for measuring, e. g. measuring instrument and probe. In addition, there is the cable and possibly an amplifier, terminal strip and armature. Molality Molality is the quantity (in Mol) of a dissolved substance in 1000 g solvent. MultiCal® Name stating that a measuring instrument provides several calibration procedures.
Lists handylab multi 12 Sample Designation of the sample ready to be measured. Normally, a test sample is made by processing the original sample. The test sample and original sample are identical if the test sample was not processed. Setting the 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.
Cond 330i/340i Index Index A E P Air pressure display 58 Asymmetry 22 Authorized use 13 AutoCal TEC 22, 24 AutoRange (oxygen) 17 AutoRead Conductivity 38 D. O. 30 pH 20 Energy saving feature 17 Error messages 69, 70 pH calibration evaluation 23 pH value 20 Plug-in power supply 16 Precautions 13 C Calibration Conductivity 39 D. O. 31 pH 22 Calibration evaluation D. O. 32 Dissolved oxygen 32 Calibration interval 42 conductivity 59 Dissolved oxygen 59 pH 58 Calibration protocol 22 conductivity 39 D.
Index Cond 330i/340i Two-point calibration (pH) 22, 25 80 ba75371e03 11/2009
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