DH3 Digihelic Differential Pressure Controller, For Measuring Gas, Certification : YAS

dh3 digihelic differential pressure controller

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.

the series dh3 digihelic® controller allows the selection of pressure, velocity or volumetric flow operation in several commonly used engineering units. 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; rectangular or circular duct for inputting area in flow applications; set point control or set point and alarm operation; alarm operation as a high, low or highlow alarm; automatic or manual alarm reset; alarm delay; view peak and valley process reading; digital damping for smoothing erratic process applications; scaling the 4-20 ma process output to fit your applications range and field calibration.

product applications : scfm flow in ducts,static pressures in ducts or buildings,filter status,damper control,fan control.