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pH 1970i

Commissioning

11

ba75690e01

01/2007

3

Commissioning

3.1

Scope of delivery

z

Portable measuring instrument, pH 1970i with integrated recharge-
able battery

z

Carrying and positioning handle

z

Carrying strap

z

Sensor quiver

z

Plug-in power supply unit

z

Operating manual

3.2

Power supply

Mains operation and

charging the battery

You can either operate the measuring instrument with the integrated re-
chargeable battery or with the plug-in power supply. The plug-in power
supply supplies the measuring instrument with low voltage (12 V DC).
At the same time, the rechargeable battery is charged.

Charging time of the

battery

approx. 16 hours. The battery is charged even when the instrument is
switched off. The

LoBat

display indicator appears when the battery is

nearly empty and has to be charged as soon as possible.

Warning

The line voltage at the operating site must lie within the input voltage
range of the original plug-in power supply (see chapter 7 T

ECHNICAL

DA

-

TA

).

Warning

Use original plug-in power supplies only (see
chapter 7 T

ECHNICAL

DATA

).

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Содержание pH 1970i

Страница 1: ...ba75690e01 01 2007 pH 1970i Operating manual pH 6 2 4 6 99 C TP REL1 RUN ENTER AUTO READ CAL STO M RCL ON OFF pH 1970i Portable pH measuring instrument...

Страница 2: ...ween 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 ac cept any legal cl...

Страница 3: ...2 Measuring 16 4 2 1 General information 16 4 2 2 Measuring the pH value 18 4 2 3 Measuring the ORP voltage 19 4 3 Calibrating 20 4 3 1 AutoCal TEC 23 4 3 2 AutoCal DIN 26 4 3 3 ConCal 30 4 4 Saving 3...

Страница 4: ...tents pH 1970i 4 ba75690e01 01 2007 5 1 Maintenance 53 5 2 Cleaning 53 5 3 Disposal 53 6 What to do if 55 7 Technical data 59 7 1 General data 59 7 2 Measuring ranges resolutions accuracies 61 8 Lists...

Страница 5: ...reli ability and measuring certainty for all applications The proven MultiCal calibration procedures support you in your work with the measuring instrument The special AutoRead function enables precis...

Страница 6: ...afety datasheets You will find information on available literature in the WTW catalog or via the Internet 1 1 Display ARng nLF Oxi Tref25 Tref20 REL2 REL1 Sal cm 1 m cm S mg l S Sal O Lin K pH mV pH 8...

Страница 7: ...voltage Calibrate CAL Activate deactivate the AutoRead function AUTO READ Confirm entries start AutoRead output measured values RUN ENTER Select the measuring mode increase values scroll Select the me...

Страница 8: ...me time Warning Only connect electrodes to the measuring instrument that cannot return any voltages or currents that are not allowed SELV and current cir cuit with current limiting Nearly all electrod...

Страница 9: ...ions The individual chapters of this operating manual use safety instructions such as the label shown below to indicate various hazards or dangers Warning indicates instructions that must be followed...

Страница 10: ...onment the formation of condensate can lead to the faulty func tioning of the instrument In this event wait until the temperature of the instrument reaches room temperature before putting the instrume...

Страница 11: ...or with the plug in power supply The plug in power supply supplies the measuring instrument with low voltage 12 V DC At the same time the rechargeable battery is charged Charging time of the battery...

Страница 12: ...3 2 POWER SUPPLY z Set the date and time Setting the date and time 1 Connect the plug 1 to the socket 2 of the measuring instru ment 2 Connect the original WTW plug in power supply 3 to an easily acc...

Страница 13: ...t the current year with 9 Confirm with RUN ENTER The hours flash on the display 10 Set the current time with 11 Confirm with RUN ENTER The minutes flash on the display 12 Set the current time with 13...

Страница 14: ...on proper storage refer to the operating manual of the sensor Moistening the quiver insert Warning Do not store pH electrodes in the quiver for more than 10 hours To store them for a longer period of...

Страница 15: ...upplied by the plug in power supply z if the communication cable and a PC with a running communication program are connected z if the recorder cable is connected z if the printer cable is connected fo...

Страница 16: ...following possibilities of measuring the temperature z The temperature sensor integrated in the electrode measures the temperature automatically example TetraCon 325 z Automatic temperature measuremen...

Страница 17: ...by TP If you use an electrode without a temperature sensor proceed as fol lows Note If you calibrate without a temperature sensor set the current tempera ture of the respective buffer solution also m...

Страница 18: ...ER 1 Perform the preparatory activities according to section 4 2 1 2 Immerse the pH electrode in the test sample 3 Press the M key repeatedly until pH appears on the status display The pH value appear...

Страница 19: ...elec trodes using a test solution 1 Perform the preparatory activities according to section 4 2 1 2 Submerse the ORP electrode in the sample 3 Press the M key until the U status display appears The O...

Страница 20: ...ays in the factory You can select the interval in the range of 1 999 days see section 4 6 CONFIGURATION Calibration points Calibration can be made with one or two buffer solutions single point or two...

Страница 21: ...he first buffer solution This corresponds to a single point calibration ConCal This function is a conventional two point calibration using two buffer solutions pH 7 0 0 5 and any other buffer solution...

Страница 22: ...N PROTOCOL 02 03 02 14 19 Device No 12345678 Calibration pH Cal time 01 03 02 15 20 Cal interval 7d AutoCal DIN Tauto Buffer 1 1 679 Buffer 2 4 008 Buffer 3 6 865 Buffer 4 9 180 C1 174 1 mV 25 0 C C2...

Страница 23: ...ays the relevant buff er nominal value or the current electrode voltage in mV Note Skip the steps 2 7 and 14 if you use a temperature sensor 1 Switch on the measuring instrument with ON OFF 2 Connect...

Страница 24: ...he measured value is stable Ct2 appears 6 To continue the two point calibration thoroughly rinse the electrode with deionized water 7 If necessary enter the temperature of the second buffer solu tion...

Страница 25: ...the RUN ENTER key The instrument displays the value of the asymmetry in calibration range I REL1 REL1 Sal mV S 1 Sal O LoBat nLF Lin Oxi Tref25 Tref20 ARng 8 Time Year Ident No Day Month Baud Sal cm...

Страница 26: ...nt electrode voltage in mV Note Skip the steps 2 7 and 14 if you use a temperature sensor 12 Press the RUN ENTER key to continue the three point calibration Ct3 appears on the display 13 Thoroughly ri...

Страница 27: ...ture of the buffer solution with 3 Immerse the pH electrode in the first buffer solution 4 Press the RUN ENTER key The AR display indicator flashes The electrode voltage mV or the buffer nominal value...

Страница 28: ...nd the eval uation of the calibration in calibration range I REL1 TEC Store AR 1 LoBat nLF Lin Oxi Tref25 Tref20 ARng 8 Time Year Ident No Day Month Baud Sal cm 1 K RCL REL2 pH mV m cm S mg l Sal O S...

Страница 29: ...y Month Baud RCL REL2 m cm S mg l Sal O pH 2 Cal Auto mV 12 Press the RUN ENTER key to continue the three point calibration Cd3 appears on the display 13 Thoroughly rinse the electrode with distilled...

Страница 30: ...the last calibration or no sensor symbol in the delivery state or after the measuring parameters have been reset 2 If necessary enter the temperature of the first buffer solution with 3 Immerse the p...

Страница 31: ...H value appears on the display 12 Set the measured value to the nominal pH value of the buffer solution at the current temperature with 13 When the measured value is stable press the RUN ENTER key The...

Страница 32: ...01 01 2007 15 To return to the measuring mode Press the M key 5 9 Sal cm 1 K 2 4 8 C TP Auto REL1 TEC Store AR 1 LoBat nLF Lin Oxi Tref25 Tref20 ARng 8 Time Year Ident No Day Month Baud RCL REL2 pH m...

Страница 33: ...torage in two ways z Save manually z Switch on AutoStore Int 1 4 4 1 Saving manually You can transmit a measured value to the data storage as follows 1 Press the STO key The current number location nu...

Страница 34: ...changes to the measuring mode REL1 No Time Cal d 1 I O AR cm 1 4 Tref25 TP ARng nLF C cm S Sal RCL S m mg l Oxi Year Day Month Tref20 LoBat Lin Sal TEC Auto Baud K REL2 pH mV 2 9 6 9 pH Store Ident S...

Страница 35: ...ey Int 1 appears on the display 3 Set the required interval between the saving procedures with 4 Confirm with RUN ENTER The number of free memory locations appears on the display 5 As soon as all of t...

Страница 36: ...by z setting the save interval Int 1 to OFF or z switching the measuring instrument off and then on again 6 Confirm with RUN ENTER The prompt for the ID number appears on the display 7 Set the require...

Страница 37: ...ppears on the display The storage location of the data record is displayed for approx 2 s then the respective temperature appears Display further elements of the data record ID number date time storag...

Страница 38: ...red date appears on the display After approx 2 s the temperature of the displayed measured value appears 1 Press the RCL key repeatedly until Sto SEr appears on the display 2 Press the RUN ENTER key T...

Страница 39: ...N ENTER key The slope mV pH in the calibration range I and the calibration procedure of the last calibration appear on the display 3 Press RUN ENTER to display the value of the asymmetry mV in the cal...

Страница 40: ...ER you can switch back to the pH measuring mode 2 5 0 Year Ident Time No Day Month Baud C pH REL1 TP Sal cm 1 K 1 S Store AR LoBat nLF Lin Oxi Tref25 Tref20 ARng REL2 m cm S mg l Sal O pH 0 Cal TEC Au...

Страница 41: ...repeatedly until CAL SEr appears on the display 2 Press the RUN ENTER key The calibration protocol is transmitted to the interface After the data transmission the measuring instrument auto matically s...

Страница 42: ...llows to clear all data records Note The calibration data remain stored and can be called up 1 Switch off the measuring instrument 2 Press the STO key and hold it down 3 Press the ON OFF key The displ...

Страница 43: ...log recorder output page 45 measured values are out put as voltage values z With the KOM pilot communication kit accessory data can be transmitted bidirectionally page 46 Note If you connect a recorde...

Страница 44: ...n 1 Press the RUN ENTER key and hold it down 2 Press the RCL key Int 2 appears on the display 3 Set the required interval between the saving procedures with 4 Confirm with RUN ENTER The measuring inst...

Страница 45: ...K323 interface cable The data output automatically switches to Recorder output Socket assignment Note The analog output is activated automatically in the cable by connecting 2 and 3 The output on the...

Страница 46: ...thed media as incorrect values would result Set up the following transmission data at the PC printer Socket assignment 4 5 4 Remote control The measuring instrument can be remotely controlled from a P...

Страница 47: ...n Buffer nominal value or current electrode voltage Calibration interval Int 3 1 7 999 d Date time Any pH resolution 0 01 or 0 001 1 Switch off the measuring instrument 2 Press the M key and hold it d...

Страница 48: ...re Time Baud cm 1 K REL2 m cm S C I S P AL d pH Cal TEC Auto mV 8 Set the required interval in days d with 9 Confirm with RUN ENTER The date day flashes in the display REL1 1 O AR cm 1 4 Tref25 TP ARn...

Страница 49: ...n the display 14 Set the current year with 15 Confirm with RUN ENTER The hours flash on the display 16 Set the current time with 17 Confirm with RUN ENTER The minutes flash on the display 18 Set the c...

Страница 50: ...data gets lost when the measuring parameters are re set Recalibrate after performing a reset Configuration parameters The following configuration parameters InI are reset to the delivery status Measu...

Страница 51: ...ation pa rameters REL1 Day Month 0 9 Tref25 Time Cal I O AR cm 1 TP ARng nLF C cm S Sal RCL S m mg l Oxi Year Ident No Tref20 LoBat Lin Sal TEC Auto Store Baud K REL2 pH mV n o i in pH 5 Using switch...

Страница 52: ...Operation pH 1970i 52 ba75690e01 01 2007...

Страница 53: ...ument is sent out in a protective transport packing We recommend Keep the packing material The original packing pro tects the measuring instrument from transport damages Rechargeable battery Remove th...

Страница 54: ...ntenance cleaning disposal pH 1970i 54 ba75690e01 01 2007 Measuring instrument Dispose of the measuring instrument without the rechargeable battery as electronic waste at an appropriate collection poi...

Страница 55: ...electrode Gel electrolyte dried out Replace electrode Cause Remedy Electrode Diaphragm contaminated Clean diaphragm Membrane contaminated Clean membrane Moisture in the plug Dry plug Electrolyte obsol...

Страница 56: ...utions Cause Remedy pH electrode Diaphragm contaminated Clean diaphragm Membrane contaminated Clean membrane Test sample pH value not stable Measure with air excluded if necessary Temperature not stab...

Страница 57: ...e too high Adjust temperature of buffers or sample Measurement procedure not suitable Follow special procedure Cause Remedy Operating condition undefined or EMC load unallowed Processor reset Press th...

Страница 58: ...e01 01 2007 You want to know which software version is in the instrument Cause Remedy E g a question by the WTW service department Simultaneously press the CAL and ON OFF keys and release them again T...

Страница 59: ...bient conditions Power supply Operation 10 C 55 C Storage 25 C 65 C Climatic class 2 Rechargeable battery Nickel cadmium NiCad rechargeable battery Operational life approx 600 hours with one charging...

Страница 60: ...log output AK 323 S cable Automatic switchover when the recorder is connected by the cable AK 323 S pH output signal 200 1999 mV for the range 2 00 19 99 mV output signal 1999 1999 mV for the range 19...

Страница 61: ...pH around a calibration point Variable Measuring range Resolution pH 2 00 19 99 0 01 U mV 199 9 199 9 1999 1999 0 1 1 T C 5 0 105 0 0 1 Variable Range Increment Tmanual C 20 130 1 Variable Accuracy a...

Страница 62: ...Technical data pH 1970i 62 ba75690e01 01 2007...

Страница 63: ...xplains the indicators and the abbreviations that appear on the display and in the manual Specialist terms The glossary briefly explains the meaning of the specialist terms How ever terms that should...

Страница 64: ...solutions prepared according to DIN 19 266 Cm Display indicator during calibration for pH mea surements Indicates the selection of buffer data records for buffer solutions of the Merck company ConCal...

Страница 65: ...pH 1970i Lists 65 SELV Safety Extra Low Voltage SLO Slope setting on calibration TP Temperature measurement active Temperature Probe UASY Asymmetry...

Страница 66: ...lt The ex pression junction is also used for ground or junction less transitions Electrode zero point The zero point of a pH electrode is the pH value at which the electro motive force of the pH elect...

Страница 67: ...practical pH value is the value of a pH measurement Potentiometry Name of a measuring technique The signal depending on the mea sured parameter of the electrode is the electrical potential The elec tr...

Страница 68: ...Lists pH 1970i 68...

Страница 69: ...ing 12 14 Initialization 50 Interval data transmission 43 save 35 K Keys 7 L LoBat 56 M Mains operation 11 Measuring the temperature 16 O Operating safety 10 ORP electrode 19 ORP voltage 19 P Plug in...

Страница 70: ...Index pH 1970i 70 ba75690e01 01 2007 31...

Страница 71: ...Wissenschaftlich Technische Werkst tten GmbH Dr Karl Slevogt Stra e 1 D 82362 Weilheim Germany Tel 49 0 881 183 0 49 0 881 183 100 Fax 49 0 881 183 420 E Mail Info WTW com Internet http www WTW com...

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