User manual EUTECH INSTRUMENTS 2-WIRE CONDUCTIVITY TRANSMITTER

[. . . ] EUTECH INSTRUMENTS 3 Diagram and Dimensions (in mm) 2-Wire Conductivity Transmitter Operating Instructions 4 Installation Operating with one or several Transmitters: Figure 1 - Operating with 1 Transmitter 1 Preface Thank you for purchasing the Eutech 2-wire Conductivity Transmitter. [. . . ] Eutech Instruments does not accept any responsibility for damage or malfunction of the unit due to improper installation or operation of the Transmitter. Copyright ©1999 Eutech Instruments Pte Ltd. Blk 55 Ayer Rajah Crescent #04-14/24, Singapore 139 949. Tel: (65) 778 6876; Fax: (65) 773 0836; e-mail: marketing@eutechinst. com; Home page: http://www. eutechinst. com Figure 2 - Operating with several transmitters 2 Introduction 5 Electrical Connections The Transmitter is used for the continuous measurement of pH, ORP (REDOX), Conductivity, Dissolved Oxygen or Temperature, in conjunction with an appropriate sensor. Data output is via 4-20 mA current output. The Transmitter is housed in a IP65 enclosure, with openings for input and 4-20mA output. 68X256902 Rev 1 10/99 6 Before Calibration Remove cover of Transmitter and ensure that electrode is correctly connected as above. Connect Amp meter to the 4/20mA output of Transmitter (Appendix 1). 7 1) 2) 3) 4) 5) 6) 7) 8) Conductivity Transmitter Calibration Hold electrode in air (electrode MUST be dry) and Amp meter should read 4mA; if not, calibration is necessary; Locate "Zero adjustment" trimmer; Using a fine screwdriver, slowly turn trimmer till Amp meter reads 4mA; For greater accuracy, adjust the slope with Standard calibrating solutions; Rinse probe in de-ionised water and immerse in standard solution; In 1413 µS solution, the output is 5. 1304 mA; In 2764 µS solution, the output is 6. 2112 mA; In 12. 88 mS solution, the output is 14. 304 mA; Using a fine screwdriver, slowly turn trimmer, marked `FSMS', till Amp meter reads correct mA value with respective Standard solutions. Remember to disconnect Amp meter and close cover. Prepare fresh Calibrating solutions. Figure 4 - Method Two 10 pH Ordering Information Item Cat Code ECPHXTR ECARTSO05B ECARGTSO05B pH Transmitter Combination pH Electrode, General, integral 5m cable Combination pH Electrode, w/PMP, integral 5m cable Dissolved Oxygen Item Dissolved Oxygen Transmitter General Purpose D. O. [. . . ] for 24V ORP Item ORP Transmitter Cat Code ECORPXTR ORP Electrode, w/PMP, ECHTPTTSO05B ECHTAUTTSO05B Model Range Accuracy Calibration Input Output Operating Voltage Load Combination Platinum integral 5m cable Combination Gold ORP Electrode, w/PMP, integral 5m cable Conductivity Item Conductivity Transmitter 2-Pin SS, k=1. 0, integral 3m cable Cat Code ECCONXTR ECCONSEN46 Temperature Item Temperature Transmitter Pt 100 probe, SS316 Cat Code ECTEMPXTR ECPT10001M or ECPT10005M Housing 77 x 77 x 28 mm, field mountable 9 Appendix 1 Power Supply Item 120V Power Supply 220V Power Supply Cat Code EC-120-XTR EC-220-XTR Connecting Amp Meter for Calibration Figure 3 - Method One 68X256902 Rev 1 10/99 [. . . ]