영흥인스트루먼트(주)SINCE 1971

DIGIHELIC ® 3 DIFFERENTIAL PRESSURE CONTROLLERS

Digihelic ® Controller in Photohelic ® Gage, Square Root Output for Flow 

The Series DH3 Digihelic ® 3 Differential Pressure Controllers are 3-in-1 instruments 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 1.5% or better full-scale accuracy on ranges down to the extremely low 0.25 in w.c. to 2.5 in w.c. full-scale. Ranges of 5 in w.c. and greater maintain 0.5% FS 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 high/low 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.

FEATURES/BENEFITS

• 3-in-1 instrument allows the reduction of several instruments with one product, saving inventory, installation time and money

• Full-scale accuracy of 1.5% or better even on extremely low ranges, and 0.5% for ranges above 5 in w.c. provide for greater measurement precision

• Secure menu program provides access to device operation only for the right skill level

• Optional stainless steel bezel is the same installation diameter as Magnehelic ® gage and simplifies field upgrade to DH3 pressure controller

APPLICATIONS

• SCFM duct flow

• Filter status

• Duct or building static pressure

• Damper and fan control