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. This manual serves to explain the correct installation and operations of the XTR Transmitters. Other Transmitters available individually are: pH, ORP (REDOX), Conductivity, Dissolved Oxygen and Temperature. · · · · · EC-PH-XTR; EC-ORP-XTR; EC-CON-XTR; EC-DO-XTR; and EC-TEMP-XTR. The information presented in this manual is subject to change without prior notice, as improvements are made to the product. While Eutech will endeavor to try its best to inform the market, this does not represent a commitment on the part of Eutech Instruments Pte Ltd. 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. Version 1.0. All rights reserved. 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. probe, 0.5 ­ 40 ppm, Industrial, integral 5m cable General Purpose D.O. probe, 0 ­ 10 ppm, Industrial, integral 5m cable Cat Code ECDOXTR ECDOGEN ECDOTPll 9) NB: For other Standard values, expected current output is based on: mA = {(16/20) x Conductivity value of Standard soln} + 4mA 8 Specifications ECCONXTR 0.00 TO 20.00 mS 2% Full Scale 2 pts 3-wire (2-wires for Conductivity cell; 1 wire for Thermistor) 4-20 mA DC 12 V to 24 V 100 Ohms max. for 12 V; 600 Ohms max. 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 ...