Operating manual Multi 3400i 79 17 M 2 6 ARng O mg °C /l TP STO CAL O RCL AR pH/Dissolved Oxygen/Conductivity Measuring Instrument ba75688e01 01/2007
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.
Multi 3400i List of contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 1.2 1.3 1.4 1.5 1.6 2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.1 2.2 3 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 12 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.1 3.
List of contents Multi 3400i 4.8 4.9 5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 6.1 6.2 6.3 6.4 4 55 55 56 60 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 63 5.1 5.2 5.3 6 4.7.
Multi 3400i Overview 1 Overview 1.1 General features The compact precision handheld meter Multi 3400i enables you to carry out pH measurements, dissolved oxygen (D. O.) measurements and conductivity measurements quickly and reliably. The Multi 3400i handheld meter provides the maximum degree of operating comfort, reliability and measuring certainty for all applications.
Overview Multi 3400i 1.2 SETs of equipment The measuring instrument is also available as part of individual SETs of equipment. You will find additional information on this and other accessories in the WTW catalog or via the Internet.
Multi 3400i Overview 7 50 ml pH buffer solution, STP 4 8 50 ml pH buffer solution, STP 7 9 Calibration and control standard for conductivity measuring cells, 50 ml 10 50 ml ELY/G electrolyte solution for D.O. probes 11 50 ml RL/G cleaning solution for D.O. probes 12 WP 90/3 exchange membrane heads for D. O. probes (3 pieces) 13 SF 300 abrasive film for D.O.
Overview Multi 3400i 1.3 Keypad M STO CAL RCL AR RUN/ENTER Key functions M Select the measured variable : – pH value / ORP voltage – D. O. concentration / D. O.
Multi 3400i Overview 1.4 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 1.5 Jack field 5 4 1 2 3 1 D. O.
Overview Multi 3400i 1.6 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.
Multi 3400i 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 Multi 3400i 2.2 General safety instructions This instrument is built and inspected according to the relevant guidelines and norms for electronic measuring instruments (see chapter 7 TECHNICAL DATA). It left the factory in a safe and secure technical condition.
Multi 3400i Commissioning 3 Commissioning 3.1 Scope of delivery z Multi 3400i handheld meter z Plug-in power supply unit z Operating manual and short operating manual z 4 batteries, 1.5 V Mignon type AA (in the instrument) For details of scope of delivery of SETs, see section 1.2 SETS OF EQUIPMENT and WTW catalog. 3.
Commissioning Connecting the plug-in power supply Multi 3400i 13 Confirm with . The instrument switches to a measuring mode. 14 Switch the instrument off using . 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.
Multi 3400i 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 Multi 3400i 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.
Multi 3400i Temperature measurement in pH measurements Operation You can perform pH measurements with or without a temperature sensor as well as with the temperature sensor 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 Multi 3400i 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.
Multi 3400i 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 Multi 3400i 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.
Multi 3400i 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 10.00 C1 184.1 mV 25.0°C C2 3.0 mV 25.0°C S1 -59.4 mV/pH ASY1 4 mV Probe: +++ 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 Multi 3400i Preparatory activities AutoCal TEC 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 sensor (the TP display indicator is missing from the display).
Multi 3400i Operation TDS U pHO Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP S 1C t 1 Baud Time Day.Month No. Year Ident 8248 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 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.
Operation Multi 3400i 6 Thoroughly rinse the electrode with distilled water. 7 If required, enter the temperature of the first buffer solution, while keeping the key depressed, using <▲> <▼>. 8 Immerse the pH electrode in the second buffer solution. 9 Press the key. The AR display indicator flashes. The electrode voltage (mV) or the buffer nominal value appears on the display.
Multi 3400i Operation TDS U pHO S Sal mV % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1602 Baud Time Day.Month No. Year Ident 8ASY C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 12 Switch to the measuring mode with .
Operation Multi 3400i 4.3 Dissolved oxygen 4.3.1 General information Note D. O. measurements with the Multi 3400i can only be carried out using a CellOx 325 or StirrOx G D. O. probe. The stirrer of the StirrOx G D. O. probe has to be supplied with voltage separately using the NT/pH Mix 540 power supply. You can measure the following variables: z D. O. concentration z D. O.
Multi 3400i Operation 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 33. Switching the salt content correction on or off, see below. To measure the D. O.
Operation Multi 3400i 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. saturation as follows: 1 Perform the preparatory activities according to section 4.
Multi 3400i Operation 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.
Operation Multi 3400i 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).
Multi 3400i Probe evaluation Operation 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...
Operation Multi 3400i 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.
Multi 3400i Operation 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 Multi 3400i handheld meter, you can measure the salinity. How to proceed is described in section 4.4.3 MEASURING THE SALINITY on page 36.
Operation Multi 3400i 4.4 Conductivity 4.4.1 General information Note Conductivity measurements with the Multi 3400i can only be carried out using the TetraCon 325 measuring cell. Warning 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.
Multi 3400i Operation Checking the cell constant 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.
Operation Multi 3400i 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 34. 2 Immerse the conductivity measuring cell in the test sample. 3 Press the < ▲> <▼> keys until in the status display, 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.
Multi 3400i Operation 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 <▼>. 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 . AR flashes until a stable measured value is reached.
Operation Multi 3400i 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.
Multi 3400i Calibration evaluation Operation 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.
Operation Multi 3400i 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...
Multi 3400i Operation 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.
Operation Multi 3400i 4.6 Saving data The Multi 3400i portable measuring instrument has an internal data memory. It can store up to 500 datasets. A complete data record consists of: z Number of the storage location z Date/time z Measured values of the probes connected z Temperature values of the probes connected z Temperature measuring procedure z ID number You can transmit measured values (data records) to the data storage in two ways: z Save manually z Switch on AutoStore (Int 1), see page 44) 4.6.
Multi 3400i Operation 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.
Operation Multi 3400i 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.Month No.
Multi 3400i Operation 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.
Operation Multi 3400i 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.
Multi 3400i Operation 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.
Operation Multi 3400i Sample printout: No. 1: 09.03.01 pH 10.01 Tauto Ident : 47 17:10 25 °C AR 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 17:12 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 ...
Multi 3400i Operation 2 Press the key. The data of the last calibration of all measured variables appears in the following sequence: z pH: Slope SLO and asymmetry ASY z Dissolved oxygen: Relative slope SLO z Cond: Cell constant C Information concerning the calibration procedure is output as well. TDS U pHO S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1594 Baud Time Day.Month No.
Operation Multi 3400i 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 0.475 1/cm (without probe symbol on the display). In this case, the measured parameters are initialized (see section 4.9 RESET). TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 14C 8 Baud Time Day.Month No.
Multi 3400i Outputting the calibration protocol on the interface Operation 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.
Operation Multi 3400i 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. 3 Press the key.
Multi 3400i Operation 4.7 Transmitting data You have the following possibilities of transmitting data: z One of the following options: – With the AutoStore function (page 44), 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).
Operation Multi 3400i 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).
Multi 3400i Operation 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 AK340/B (PC) or AK325/S (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.
Operation Multi 3400i 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 – : 1 ... 180 ... 999 dInt 5 Note You can leave the configuration menu at any time with .
Multi 3400i Operation 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.
Operation Multi 3400i 10 Dissolved oxygen calibration interval Confirm with . Int 4 and the measured variable O2 appear on the display. 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 .
Multi 3400i Operation 15 Using <▲> <▼>, toggle between t20 and t25. 16 Confirm with . The date flashes on the display. 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 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 <▲> <▼>.
Operation Multi 3400i 4.9 Reset You can reset (initialize) the measurement parameters and the configuration parameters separately from one another. Measurement parameters pH O2 Cond 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 Cell constant 0.
Multi 3400i Resetting the measuring parameters Operation 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.
Operation Multi 3400i 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 Cond measuring parameters. no: Retaining settings. 8 Confirm with . The measuring instrument switches to the configuration parameters.
Multi 3400i 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 Multi 3400i 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, lint-free 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.
Multi 3400i Error message 0FL What to do if... 6 What to do if... 6.
What to do if... Multi 3400i Buffer solutions No stable measured value – Incorrect buffer solutions – Change calibration procedure – Buffer solutions too old – Use only once.
Multi 3400i What to do if... 6.
What to do if... Measured value too low Measured value too high Multi 3400i Cause Remedy – Insufficient flow – Provide flow to the probe 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.
Multi 3400i What to do if... 6.4 Display LoBat Instrument does not react to keystroke Display to Probe symbol flashes Message StoFull General errors Cause Remedy – Batteries almost empty – Exchange the batteries (see section 5.
What to do if...
Multi 3400i Technical data 7 Dimensions and weight Mechanical structure Electrical safety Ambient conditions pH/ORP measuring ranges Precision of pH/ORP (± 1 digit) Technical data Length [mm] 172 Width [mm] 80 Height [mm] 37 Weight [kg] Approx. 0.3 Type of protection IP 66 Protective class III Storage - 25 °C ... + 65 °C Operation -10 °C ... + 55 °C Climatic class 2 Measuring range Resolution pH - 2.00 ... + 19.99 0.01 U [mV] - 1999 ... + 1999 1 T [°C] - 5.0 ... + 105.
Technical data Multi 3400i Oxi measuring ranges Measuring range/resolution temperature Precision of Oxi (± 1 digit) Correction functions of Oxi mg/l % Measuring range I Resolution 0 ... 19.99 0.01 0 ... 199.9 0.1 Measuring range II Resolution 0 ... 90.0l 0.1 0 ... 600 1 °C Measuring range (Resolution) Concentration ± 0.5 % of measured value at ambient temperature of 5 °C ... 30 °C Saturation ± 0.
Multi 3400i Technical data Precision of Cond (± 1 digit) Nonlinear compensation Accuracy Sample temperature ± 0.5 % 0 °C ... 35 °C according to EN 27 888; ± 0.5 % 35 °C ... 50 °C extended nLF function acc. to WTW measurements SAL Range 0.0 ... 42.0 Accuracy Sample temperature ± 0.1 5 °C ... 25 °C ± 0.2 25 °C ... 30 °C T [°C] ± 0.1 C [cm-1] 0.450 ... 0.
Technical data Power supply Multi 3400i Batteries 4 x 1.5 V alkali-manganese batteries, Type AA Operational life Approx. 3000 operating hours Mains The following applies to all plug-in power supplies:Connection max. Overvoltage category II Plug-in power supply unit (Euro, US , UK, Australian plug) FRIWO FW7555M/09, 15.1432 Friwo Part. No. 1822089 Input: 100 ... 240 V ~ / 50 ... 60 Hz / 400 mA Output: 9 V = / 1,5 A Plug-in power supply with Euro plug: FRIWO FW1199, 11.7864 Friwo Part. No.
Multi 3400i 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 76 Multi 3400i
Multi 3400i Lists 8 Lists This chapter provides additional information and orientation aids. Abbreviations Specialist terms Index 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 Multi 3400i Abbreviations Conductivity value (international γ) 78 AR AutoRead (drift control) ARng Automatic range switching Measuring instrument measures with highest resolution ASY Asymmetry AutoCal DIN Automatic pH calibration with buffer solutions prepared according to DIN 19 266 AutoCal TEC Automatic pH calibration with WTW technical buffer solutions according to DIN 19267 C Cell constant [cm-1] (internat. k) °C Temperature unit, degrees Celsius Cal Calibration Cd...
Multi 3400i Lists nLF Nonlinear temperature compensation OFL Display range exceeded (Overflow) OxiCal Automatic calibration for D. O. measurements pH pH value S Slope (internat. k) SAL Salinity SELV Safety Extra Low Voltage SLO Slope setting on calibration TC Temperature coefficient (internat.
Lists Multi 3400i 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.
Multi 3400i 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® WTW name stating that a measuring instrument provides several calibration procedures.
Lists Multi 3400i Salt content 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.
Multi 3400i Index Index A E P Air pressure display 57 Asymmetry 20 Authorized use 11 AutoCal TEC 20, 22 AutoRange (oxygen) 15 AutoRead Conductivity 37 D. O. 29 pH 18 Energy saving feature 15 Error messages 67, 68 pH calibration evaluation 21 pH value 18 Plug-in power supply 14 Precautions 11 C Calibration Conductivity 38 D. O. 30 pH 20 Calibration evaluation D. O. 31 Dissolved oxygen 31 Calibration interval 41 conductivity 58 Dissolved oxygen 58 pH 57 Calibration protocol 20 conductivity 38 D. O.
Index values 53 Two-point calibration (pH) 20, 23 84 Multi 3400i
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