Operating manual pH/Cond 3400i Tref2 nLF 5 53 25 M 0 0 TP AR STO CA L S/cm °C O RCL AR pH/Conductivity measuring instrument ba75687e01 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.
pH/Cond 3400i 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 3.2 4 General features . .
Contents pH/Cond 3400i 5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 65 5.1 5.2 5.3 6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 6.1 6.2 6.3 4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 pH system messages . . . . . . . . . . . .
pH/Cond 3400i Overview 1 Overview 1.1 General features This compact precision handheld meter enables you to carry out pH / ORP measurements and conductivity measurements rapidly and reliably. The handheld meter provides the maximum degree of operating comfort, reliability and measuring certainty for all applications.
Overview pH/Cond 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.
pH/Cond 3400i Overview Set (sample configuration): 1 pH/Cond 3400i measuring instrument 2 Beaker, 50 ml 3 Stand 4 Calibration and control standard for conductivity measuring cells, 50 ml 5 50 ml pH buffer solution, STP 4 6 50 ml pH buffer solution, STP 7 7 Storing solution for pH electrodes 8 Conductivity measuring cell 9 pH combination electrode 10 Plug-in power supply (optional) 7
Overview pH/Cond 3400i 1.
pH/Cond 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 Probe 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.
Overview pH/Cond 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 connecting a conductivity measuring cell with temperature sensor, the measuring instrument recognizes the probe and automatically switches to the last selected conductivity measuring mode. As soon as the probe is disconnected, the instrument switches to the pH or ORP measuring mode.
pH/Cond 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 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 pH/Cond 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.
pH/Cond 3400i Commissioning 3 Commissioning 3.1 Scope of delivery z 3400i handheld meter z Plug-in power supply (optional) 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 chapter 1.2 SETS OF EQUIPMENT and WTW catalog. 3.
Commissioning Connecting the original plug-in power supply unit pH/Cond 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.
pH/Cond 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.
Operation Preparatory activities pH/Cond 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.
pH/Cond 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 a conductivity measuring cell. The measuring instrument recognizes which sensors are connected and automatically switches to the correct mode for the temperature measurement. The following cases are distinguishable.
Operation pH/Cond 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.
pH/Cond 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 .
Operation pH/Cond 3400i 4.2.3 Measuring the ORP voltage In conjunction with an ORP electrode, e.g. SenTix ORP, the measuring instrument can measure the ORP voltage (mV) of a solution. 1 Perform the preparatory activities according to section 4.2.1. 2 Submerse the ORP electrode in the sample. 3 Press the <▲> <▼> keys until the U status display appears. The ORP voltage (mV) of the test sample appears on the display. 4 Wait for a stable measured value.
pH/Cond 3400i Operation 4.3 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.
Operation pH/Cond 3400i Note You can automatically print a calibration protocol after the calibration. To do so, connect a printer to the interface according to section 4.7.2 before calibrating. After a valid calibration, the record is printed. 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.
pH/Cond 3400i Operation Preparatory activities 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). 4.3.
Operation pH/Cond 3400i 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 with <▲> <▼> while keeping the key depressed. 3 Immerse the pH electrode in the first buffer solution. 4 Press the key. The AR display indicator flashes.
pH/Cond 3400i Operation strument uses the Nernst slope (-59,2 mV/pH at 25 °C) and determines the asymmetry of the electrode. 6 Thoroughly rinse the electrode with deionized water. 7 If required, enter the temperature of the second buffer solution with <▲> <▼> while keeping the key depressed. 8 Immerse the pH electrode in the second buffer solution. 9 Press the key. The AR display indicator flashes.
Operation pH/Cond 3400i 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 26 Switch to the measuring mode with .
pH/Cond 3400i Operation 4.3.2 AutoCal DIN For this procedure, use two different standard buffer solutions according to DIN 19266 (type A, C, D or F with pH values at 25 °C of: 1.679 / 4.006 / 6.865 / 9.180). Note Skip the steps 2 and 7 if you use a pH electrode with a temperature sensor or the temperature sensor of a conductivity measuring cell. 1 Press the key repeatedly until the display Cd1 and the function display AutoCal DIN appear.
Operation pH/Cond 3400i 5 When the measured value is stable, Cd2 appears. TDS U pHO Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP S 1C d2 Baud Time Day.Month No. Year Ident 8248 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL Note At this point, the AutoCal DIN calibration can be terminated with . This corresponds to a single-point calibration.
pH/Cond 3400i Operation 10 When the measured value is stable, AR disappears. The value of the slope (mV/pH) appears on the display. The probe symbol shows the evaluation of the current calibration. 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. Year Ident SLO C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 11 Press the key. The value of the asymmetry (mV) appears on the display.
Operation pH/Cond 3400i 4.3.3 Two-point calibration ConCal For this procedure, use two buffer solutions: z pH 7.0 ± 0.5 z any other buffer solution Note Skip the steps 2 and 8 if you use a pH electrode with a temperature sensor or the temperature sensor of a conductivity measuring cell. 1 Press the key repeatedly until the ASY display and the Cal function display appears.
pH/Cond 3400i Operation TDS U pH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1SL O Baud Time Day.Month No. Year Ident 8248 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 8 Thoroughly rinse the electrode with deionized water. 9 If required, enter the temperature of the second buffer solution with <▲> <▼> while keeping the key depressed. 10 Immerse the pH electrode in the second buffer solution. 11 Press the key.
Operation pH/Cond 3400i TDS U pHO S Sal mV % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1603 Baud Time Day.Month No. Year Ident 8ASY C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 15 32 Switch to the measuring mode with .
pH/Cond 3400i Operation 4.4 Conductivity/Salinity 4.4.1 General information Note Conductivity measurements with the pH/Cond 340 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.
Operation Checking the cell constant pH/Cond 3400i 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 cm-1. TDS UpH O S 1C C L Baud Time Day.Month No.
pH/Cond 3400i Operation 4.4.2 Measuring the conductivity You can meaure the conductivity as follows: 1 Perform the preparatory activities according to section 4.4.1. 2 Immerse the conductivity measuring cell in the test sample. 3 Press the < ▲> <▼> keys until and the unit µS/cm appears in the status display. 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 pH/Cond 3400i 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 Select 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.
pH/Cond 3400i 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 pH/Cond 3400i 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.
pH/Cond 3400i Operation 4 Press the key. The AutoRead measurement to determine the cell constant starts. The AR display indicator flashes until a stable signal is reached. The cell constant determined is displayed. The measuring instrument automatically stores the cell constant. TDS UpH O S 1C AL Baud Time Day.Month No.
Operation pH/Cond 3400i 4.4.6 Setting the temperature compensation The calculation of the temperature compensation is based on the preset reference temperature, Tref 20 or Tref 25 (see section 4.8 CONFIGURATION). You can select one of the following temperature compensations: z Nonlinear temperature compensation (nLF) according to EN 27 888 z Linear temperature compensation (Lin) with adjustable coefficient in the range 0.001 ... 3.
pH/Cond 3400i Selecting the nonlinear temperature compensation Operation You can select the nonlinear temperature compensation as follows: 1 Press the key repeatedly until the status displays and tC appear. 2 Press the key. 3 Press the key repeatedly until nLF appears on the display. TDS UpH O S Sal mV/pH % mg/l m S/cm mbar M cm 1/ cm Sal °F° % /K TP 1684 Baud Time Day.Month No.
Operation pH/Cond 3400i 2 Press the key. 3 Press the key repeatedly until the adjustable linear temperature coefficient (%/K) appears on the display. TDS UpH O S Sal mV/pH % mg/l m S/cm mbar M cm 1/ cm Sal °F° % /K TP 1224 Baud Time Day.Month No. Year Ident 2000 Tref25 Tref20 LoBat nLF Lin Cal 4 C Auto Store ARng AR RCL AutoCal DIN AutoCalTEC Set the temperature coefficient with <▲> <▼> , e.g. 1.880 %/K.
pH/Cond 3400i Switching the temperature compensation off Operation You can switch off the temperature compensation as follows: 1 Press the key repeatedly until tc appears on the display. 2 Press the key. 3 Press the key repeatedly until four bars appear in the lower line of the display. TDS UpH O S Sal mV/pH % mg/l m S/cm mbar M cm 1/ cm Sal °F° % /K TP 1224 Baud Time Day.Month No.
Operation pH/Cond 3400i 4.5 Calibration intervals (Int 3, 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.
pH/Cond 3400i Operation 4.6 Saving The measuring instrument has an internal data memory. It can store up to 500 data records. A complete data record consists of: z Number of the storage location z Date/time z Measured values of the probes connected z Temperature 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 47). 4.6.
Operation pH/Cond 3400i TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1699 Baud Time Day.Month No. Year Ident 8172 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL Message StoFull 3 Using <▲> <▼>, set 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.
pH/Cond 3400i 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. Setting the save interval The default setting for the save interval (Int 1) is OFF. By this, the AutoStore function is switched off.
Operation pH/Cond 3400i 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 starts the measuring and saving procedure. AutoStore flashes on the display.
pH/Cond 3400i 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. ISE UpH mol/L mV/pH % ppm mg/L S 1 0 s T O°F Baud Time Day.Month No.
Operation pH/Cond 3400i 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.
pH/Cond 3400i Operation Sample printout: No. 1: 09.03.99 pH 10.01 Tman Ident : 1 No. 2: 09.03.99 pH 10.01 Tauto Ident : 1 17:10 25 °C AR 17:11 24.7 °C AR No. 3: 09.03.99 305.2 mV Tauto Ident : 13 17:12 ... Outputting the calibration data on the display 1 Press the key repeatedly until CAL disp appears on the display. TDS UpH O S 1C AL Baud Time Day.Month No.
Operation pH/Cond 3400i 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. Year Ident SLO C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 3 Press to display the value of the asymmetry (mV). TDS U pHO S Sal mV % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1601 Baud Time Day.Month No.
pH/Cond 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 pH/Cond 3400i 4.6.4 Clearing the memory With this function, you can delete 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.
pH/Cond 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 47), 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).
Operation pH/Cond 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). 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.
pH/Cond 3400i Operation 4.7.3 Remote control The measuring instrument can be remotely controlled from a PC. This requires the KOM pilot communication kit. It is available as an accessory. The instrument is then controlled via commands that simulate keystrokes and request the current display contents. Note A more detailed description is provided within the scope of delivery of the communication kit.
Operation pH/Cond 3400i 4.8 Configuration You can adapt the measuring instrument 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 Display during the pH calibration Buffer nominal value, or current electrode voltage Intervals Calibration (Int 3) in days (d) – pH: 1 ... 7 ... 999 d Int 3 – Int 5 Reference temperature – 25 °C (TREF25)t25 : 1 ... 180 ...
pH/Cond 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 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 . On the display, Int 3 appears.
Operation pH/Cond 3400i 11 Switching over the reference temperature Confirm with . The reference temperature set for conductivity measurements appears on the display. TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1t 25 Baud Time Day.Month No. Year Ident 4YES C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 12 Using <▲> <▼>, toggle between t20 and t25. 13 Confirm with . The date flashes on the display.
pH/Cond 3400i Operation 21 Confirm with . The minutes flash on the display. 22 Set the current time with <▲> <▼>. 23 Confirm with . The measuring instrument switches to the last active measuring mode.
Operation pH/Cond 3400i 4.9 Reset You can reset (initialize) the measurement parameters and the configuration parameters separately from one another. Measurement parameters pH Cond The following measuring parameters are reset to the delivery status: Measuring mode pH Slope -59.16 mV/pH Asymmetry 0 mV Manual temperature input 25 °C Measuring mode Cell constant 0.475 cm-1 (calibrated) 0.
pH/Cond 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. pHO TDS 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 <▲> <▼>, toggle between no and YES.
Operation pH/Cond 3400i Resetting the configuration parameters TDS S pH O Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1In I Baud Time Day.Month No. Year Ident 88no C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 64 7 Using <▲> <▼>, toggle between no and YES. YES: Resetting the configuration parameters no: Retaining settings. 8 Confirm with . The measuring instrument automatically switches to the last active measuring mode.
pH/Cond 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 on the display 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 pH/Cond 3400i Note For maintenance of electrodes and measuring cells, follow the corresponding operating manual. 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.
pH/Cond 3400i Error message 0FL What to do if... 6 What to do if... 6.
What to do if... pH/Cond 3400i Buffer solutions No stable measured value – Incorrect buffer solutions – Change calibration procedure – Buffer solutions too old – Use only once.
pH/Cond 3400i What to do if... 6.2 Error message OFL Conductivity system messages Cause Remedy The measured value lies outside the measuring range Error message E3 – Measuring cell not connected – Connect measuring cell – Cable broken – Replace measuring cell Cause Remedy – Measuring cell contaminated – Clean cell and replace it if necessary – Unsuitable calibration solution – Check calibration solutions 6.
What to do if...
pH/Cond 3400i Technical data 7 Dimensions and weight Mechanical structure Electrical safety Ambient conditions pH/ORP measuring ranges Precision of pH/ORP (± 1 digit) pH temperature input: 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 ...
Technical data pH/Cond 3400i Cond measuring ranges Measuring range Resolution [µS/cm] 0 ... 1999 1 [mS/cm] 0.00 ... 19.99 0.0 ... 199.9 0 ... 500 0.01 0.1 1 SAL 0.0 ... 70.0 according to the IOT table 0.1 T [°C] − 5.0 ... + 105.0 0.1 Precision of Cond (± 1 digit) No compensation: Accuracy ± 0.5 % 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.
pH/Cond 3400i Technical data Serial interface Power supply Type RS232, data output Baud rate Selectable 1200, 2400, 4800, 9600 baud Data bits 8 Stop bit 2 Parity None Handshake RTS/CTS + Xon/Xoff Cable length Max. 15m Batteries 4 x 1.5 V alkali-manganese batteries, type AA Operational life Approx. 3000 operating hours Mains (optional) The following specifications apply to all plug-in power supplies: Max.
Technical data Guidelines and norms used pH/Cond 3400i EMC E.C. guideline 89/336/EEC EN 61326-1:1997 EN 61000-3-2 A14:2000 EN 61000-3-3:1995 FCC Class A Instrument safety E.C. guideline 73/23/EEC EN 61010-1 A2:1995 Climatic class VDI/VDE 3540 Type of protection EN 60529:1991 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.
pH/Cond 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 pH/Cond 3400i Abbreviations Conductivity value (international γ) 76 AR AutoRead (drift control) ARng Automatic range switching Measuring instrument measures with highest resolution ASY Asymmetry 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 Cm... Display indicator during calibration for pH measurements.
pH/Cond 3400i Lists SELV Safety Extra Low Voltage SLO Slope setting on calibration TC Temperature coefficient (internat.
Lists pH/Cond 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.
pH/Cond 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 pH/Cond 3400i Temperature coefficient Value of the slope of a linear temperature function. 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 conductometric measurements, the measured value is converted to a defined reference temperature.
pH/Cond 3400i Index A Asymmetry 21 Auslieferzustand 62 Authorized use 11 AutoCal DIN 21, 27 AutoCal TEC 21, 23 AutoRead 18, 36 C Calibration Conductivity 37 Calibration evaluation 22, 38 Calibration interval 44 Calibration procedures 21 Calibration protocol 21 D. O.
Index 82 pH/Cond 3400i
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