wtw Multi 340i Operating Manual
Ph/dissolved oxygen/conductivity measuring instrument
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Summary of Contents for wtw Multi 340i
- Page 1 For Sales & Service Contact Operating manual 2650 E. 40th Ave. • Denver, CO 80205 Phone 303-320-4764 • Fax 303-322-7242 1-800-833-7958 www.geotechenv.com Multi 340i pH/Dissolved Oxygen/Conductivity Measuring Instrument ba52318e02 03/2004...
- Page 2 © Copyright Weilheim 2004, WTW GmbH Reproduction in whole - or even in part - is prohibited without the ex- press written permission of WTW GmbH, Weilheim. Printed in Germany.
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Page 3: Table Of Contents
Multi 340i List of contents Overview ........5 General features . - Page 4 List of contents Multi 340i 4.7.2 PC/external printer (RS232 interface) ..55 4.7.3 Remote control ......55 Configuration .
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Page 5: Overview
Overview Overview General features The compact precision handheld meter Multi 340i enables you to carry out pH measurements, dissolved oxygen (D. O.) measurements and conductivity measurements quickly and reliably. The Multi 340i handheld meter provides the maximum degree of oper- ating comfort, reliability and measuring certainty for all applications. -
Page 6: Sets Of Equipment
You will find additional information on this and other accessories in the WTW catalog or via the Internet. Set (sample configuration): Multi 340i meter, carrying strap with 2 carrying clips, armoring Cond/Oxi beaker with beaker clip pH beaker Stand... - Page 7 Multi 340i Overview 50 ml pH buffer solution, STP 4 50 ml pH buffer solution, STP 7 Calibration and control standard for conductivity measuring cells, 50 ml 50 ml ELY/G electrolyte solution for D.O. probes 50 ml RL/G cleaning solution for D.O. probes WP 90/3 exchange membrane heads for D.
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Page 8: Keypad
Overview Multi 340i Keypad RUN/ENTER Key functions Select the measured variable <M>: – pH value / ORP voltage – D. O. concentration / D. O. saturation – Conductivity / salinity Save a measured value <STO> Switch measuring instrument on/off <ON/OFF>... -
Page 9: Display
Multi 340i Overview Display Status display Sensor symbol mV/pH % mg/l Meas. value display mbar 1/ cm Sal Time Baud Function and ° Day.Month No. ° Year Ident temperature display Tref25 Tref20 AutoCal DIN Auto Store ARng LoBat AutoCal TEC Jack field D. -
Page 10: Operating Structure
Overview Multi 340i 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. -
Page 11: Safety
Multi 340i Safety Safety This operating manual contains basic instructions that you must follow during the commissioning, operation and maintenance of the measur- ing instrument. Consequently, all responsible personnel must read this operating manual carefully before working with the measuring system. -
Page 12: General Safety Instructions
Safety Multi 340i General safety instructions This instrument is built and inspected according to the relevant guide- lines and norms for electronic measuring instruments (see chapter 7 ECHNICAL DATA It left the factory in a safe and secure technical condition. -
Page 13: Commissioning
Multi 340i Commissioning Commissioning Scope of delivery l Multi 340i handheld meter l Plug-in power supply unit l Operating manual and short operating manual l 4 batteries, 1.5 V Mignon type AA (in the instrument) For details of scope of delivery of SETs, see section 1.2 SET S OF and WTW catalog. - Page 14 Warning Use original plug-in power supplies only (see chapter 7 T ECHNICAL DATA Plug the jack (1) into the socket (2) of the measuring instru- ment. Connect the original WTW plug-in power supply (3) to an easily accessible mains socket.
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Page 15: Operation
Multi 340i Operation Operation Switching on the measuring instrument Press the <ON/OFF> key. The display test appears briefly on the display. After this, the measuring instrument automatically switches to the measuring mode. Measuring mode when Connected sensor Measuring mode switching on... -
Page 16: Ph Value / Orp Voltage
Operation Multi 340i pH value / ORP voltage 4.2.1 General information Preparatory activities Perform the following preparatory activities when you want to measure: Connect the pH electrode to the measuring instrument. If necessary, press the <M> key repeatedly until the status dis- play pH (pH measurement) or U (measurement of the ORP voltage) appears. - Page 17 Multi 340i Operation Temperature measure- You can perform pH measurements with or without a temperature sen- ment in pH measure- sor as well as with the temperature sensor of an oxygen sensor or a ments conductivity measuring cell. The measuring instrument recognizes which sensors are connected and switches automatically to the correct mode for the temperature measurement.
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Page 18: Measuring The Ph Value
Operation Multi 340i 4.2.2 Measuring the pH value Perform the preparatory activities according to section 4.2.1. Immerse the pH electrode in the test sample. Press the < > < > keys until pH appears in the status display. The pH value appears on the display. -
Page 19: Measuring The Orp Voltage
Multi 340i Operation Start AutoRead with <RUN/ENTER>. AR flashes until a stable measured value is reached. This measured value is transmitted to the interface. If necessary, start the next AutoRead measurement with <RUN/ENTER>. To terminate the AutoRead function: Press the <AR> key. -
Page 20: Ph Calibration
– after a voltage interruption, e. g. after changing the batteries AutoCal TEC is specially matched to the WTW technical buffer solutions as a fully au- tomatic two-point calibration. The buffer solutions are automatically recognized by the measuring instrument. Depending on the instrument setting (see section 4.8 C...
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