Model 657C-1 relative humidity and temperature transmitter is housed in a die-cast aluminum protective enclosure with a gasketed cover. This dual-purpose device includes two two-wire circuits to simultaneously produce separate 4-20 mA output signals for relative humidity from 0 to 100% and temperature from 32 to 212F. Accuracy for humidity is ±2% from 10 to 90%, and for temperature it is ±1F over the full range.
Dwyer Instruments Inc., Box 373, Michigan City, IN 46361, FAX (219) 872-9057.
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