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Subject: Want Cheap pH, ORP, DO, Temp & Conductivity Transmitters

Date: 01/21/02 at 11:55 PM
Posted by: Peter W O'Dwyer
E-mail: peter.w.odwyer@saint-gobain.com
Message Posted:

Looking for inexpensive instrument 4-20ma transmitters for the following:
PH Range: 0.00 to 14.00 pH Accuracy: +/-.05 pH
ORP Range: 0 to 1000 mV Accuracy: +/-3 mV
Conductivity Range: 0.00 to 20.00 mS Accuracy +/-2% Full Scale
Temp Range: 0 to 50.0 C Accuracy: +/-.5 C
Dissolved Oxygen Range: 0 to 200% Accuracy: +/-1.5% Full Scale
This is for a large planted aquarium..a hobby. Want units similar to the Eutech (www.eutechinst.com) models (Oakton also privately labels them) but at a lower cost. Need to bring these inputs into an inexpensive PLC.

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