The Series 629 Wet/Wet differential pressure transmitter has a pressure sensor that offers 0.5-percent full-scale accuracy on ranges from 10 to 100 PSID, the company says. Units sense the differential pressure of compatible gases or liquids and send a 4-20-mA output signal. It can be used in a variety of applications with wetted parts of 316 and 316L stainless steel and comes in an industrial NEMA 4X housing, designed to withstand temperatures up to 200 degrees F (93 degrees C). According to the manufacturer, the Series 629 is the ideal transmitter for monitoring differential pressures on HVAC equipment such as water chillers, coils, heat exchangers, and pumps.

Dwyer Instruments Inc., P.O. Box 373, Michigan City, IN 46361; 800-872-9141 or 219-879-8000; 219-872-9057 (fax);;

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