User manual EUTECH INSTRUMENTS 2-WIRE DISSOLVED OXYGEN TRANSMITTER
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Manual abstract: user guide EUTECH INSTRUMENTS 2-WIRE DISSOLVED OXYGEN TRANSMITTER
Detailed instructions for use are in the User's Guide.
[. . . ] EUTECH INSTRUMENTS
3
Diagram and Dimensions (in mm)
2-Wire Dissolved Oxygen 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 Dissolved Oxygen Transmitter. [. . . ] 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. 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
5 2 Introduction
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. The Transmitter is housed in a IP65 enclosure, with openings for input and 4-20mA output.
68X256903 Rev 1 10/99
6
Before Calibration
10
pH
Ordering Information
Item Cat Code ECPHXTR ECARTSO05B ECARGTSO05B
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).
pH Transmitter
7
1) 2) 3) 4) 5) 6) 7) 8)
Dissolved Oxygen Transmitter Calibration
Short Dissolved Oxygen input and observe Amp meter display; Amp meter should read 4mA; if not, calibration is necessary; Locate "Offset adjustment" trimmer; Using a fine screwdriver, slowly turn trimmer till Amp meter reads 4mA; For greater accuracy, adjust the slope using Air as a reference; Hold the dry probe in Air; In 100% Saturation (in Air), output is 12 mA; In 200% Saturation, output is 20 mA; Using a fine screwdriver, slowly turn trimmer, marked `Slope', till Amp meter reads correct mA value with respective Oxygen Saturation levels. Remember to disconnect Amp meter and close cover.
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
Conductivity
Item Conductivity Transmitter 2-Pin SS, k=1. 0, integral 3m cable Cat Code ECCONXTR ECCONSEN46
Model Range Accuracy Calibration Input Output Operating Voltage Load
Temperature
Item Temperature Transmitter Pt 100 probe, SS316 Cat Code ECTEMPXTR ECPT10001M or ECPT10005M
Power Supply
Item 120V Power Supply 220V Power Supply Cat Code EC-120-XTR EC-220-XTR
Housing
77 x 77 x 28 mm, field mountable
9
Appendix 1
Connecting Amp Meter for Calibration
Figure 3 - Method One
Figure 4 - Method Two
68X256903 Rev 1 10/99 [. . . ]
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