Dwyer Instruments, a leading supplier of a complete range of practical and affordable instrumentation, recently announced the release of the new DH3 Series Digihelic Differential Pressure Controller, which can be used for such applications as dust collection bag filters, SCFM flow in ducts, filter status, static pressures in ducts or buildings, damper control and fan control.

The Series DH3 Digihelic Differential Pressure Controller is a 3 in 1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output all packed in the popular Photohelic gage style housing. Combining these 3 features allows the reduction of several instruments with one product, saving inventory, installation time and money. The Digihelic  controller is the ideal instrument for pressure, velocity and flow applications, achieving a 1% full scale accuracy on ranges down to the extremely low 0.25˝ w.c. to 2.5˝ w.c. full scale. Ranges of 5˝ w.c. and greater maintain 0.5% F.S. accuracy. Bi-directional ranges are also available.

This device allows the selection of pressure, velocity or volumetric flow operation in several commonly used engineering units, reveals the company’s press release. 2 SPDT control relays with adjustable deadbands are provided along with a scalable 4-20 mA process output. Programming is easy using the menu key to access 5 simplified menus which provide access to security level, selection of pressure, velocity or flow operation,  selection of engineering units, K-factor for use with flow sensors, among others.