The new Model 635S pressure transmitter is said to be an economical unit that brings high accuracy — 0.5% full scale — to positive pressure readings of compatible gases and liquids in various ranges, from 0 to 20 psi to as high as 0 to 5,000 psi, the company says. The circuit design allows it to be operated in 2-, 3-, or 4-wire loops. Output signal is standard 4-20 mA. The unit’s potentiometers can be adjusted through the front of the housing. Terminal block connections are readily made on the top. Dwyer Instruments, Inc., P.O. Box 373, Michigan City, IN 46361; 219-879-8000; 219-872-9057 (fax); info@dwyer-inst.com (e-mail); www.dwyer-inst.com (Web site).

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• Dwyer Instruments, Inc.