영흥인스트루먼트(주)SINCE 1971

DIGIHELIC ® DIFFERENTIAL PRESSURE CONTROLLER

3-in-1 Instrument: Gage, Switch and Transmitter, Square Root Extractor for Air Flow

The Series DH Digihelic ® Differential Pressure Controller is a 3-in-1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output.

The Digihelic ® controller is the ideal instrument for pressure, velocity and flow applications, achieving a 0.5% full-scale accuracy on ranges from 0.25 to 100 in w.c.

The Digihelic ® controller allows the selection of pressure, velocity or volumetric flow operation in several commonly used engineering units.

Two SPDT control relays with adjustable dead bands are provided along with a scalable 4-20 mA process output.

The Series DH provides extreme flexibility in power usage by allowing 120/220 VAC 

and also 24 VDC power which is often used in control panels.

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 readings; digital damping for smoothing erratic process applications; scaling the 4-20 mA process output to fit your application’s range; Modbus ® communications; and field calibration.

FEATURES/BENEFITS

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

• Velocity of flow modes, a square root output coincides with the actual flow curve for greater precision

• Power usage of 120/220 VAC or 24 VDC provides flexibility to incorporate device in control panel

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

• Modbus ® communications supports Process and HVAC system integration and control

APPLICATIONS

• SCFM duct flow

• Industrial ovens air flow

• Filter status

• Clean room pressurization

• Fume hood air flow 

• Surgical and medical room pressurization

• Damper and fan control