Differential pressure controller

May 26, 2008

Dwyer has released its Series DH3 differential pressure controller, which provides a 4-20 mA process output, 2 SPDT relays with adjustable deadbands and a backlit LCD display. It offers programming via a menu key that enables the user to select: security level; set point or set point and alarm operation; auto or manual alarm reset; pressure, velocity or flow operation, K-factor for use with various Pitot tubes and flow sensors, circular or rectangular duct size for volumetric flow operation plus many more.

The Photohelic gage style aluminum housing is rated NEMA 4X on the front face when properly installed in a control panel. The sensing element can detect low differential pressures down to 0.25 inches w.c. up to 100 inches w.c. Bidirectional ranges are also available.
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