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DH DIGIHELIC® Differential Pressure Controller


Item# DH-006

In stock

Lead Time (If not in stock): 3 weeks
DH-006 DH-006
  • 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

DH-006 Model Options

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Pressure Range
Pressure Type
Pressure Port Type
Pressure Port Size
Power Source
Accuracy value
Accuracy Class
Number Of Digits
Electrical Output
Output Signal
Alarm Types (DC/AC)
Additional Features

  • Stability < ±1% per year.
  • Weight 14.4 oz (408 g).
  • Output Signal 4-20 mA DC into 900 Ω max.
  • Pressure Limits Ranges ≤ 2.5 in w.c. = 2 psi
  • Service Air and non-combustible
  • Temperature Limits 32 to 140°F (0 to 60°C).
  • Accuracy ±0.5% at 77°F (25°C) including hysteresis and repeatability.
  • Display 4 digit LCD 0.4" height. LED indicators for set point and alarm status.
  • Electrical Connections Screw terminals.
  • Electrical Rating 8 amps at 240 VAC resistive.
  • Enclosure Rating Face designed to meet NEMA 4X (IP66).
  • Mounting Orientation Mount unit in horizontal plane.
  • Power Consumption Low voltage power = 24 VDC - 130 mA max
  • Power Requirements High voltage power = 100 to 240 VAC
  • Set Point Adjustment Adjustable via keypad on face.
  • Size 1/8 DIN.
  • Switch Type 2 SPDT relays.
  • Wetted Materials Consult factory.
  • Housing Material ABS plastic
  • Process Connections Compression fitting for use with 1/8" ID X 1/4" OD tubing (3.175 mm ID x 6.35 mm OD). Optional barbed fitting for 3/16" ID tubing.
  • Response Time 250 ms.
  • Thermal Effects 0.020%/°F (0.036/°C) from 77°F (25°C).
  • Agency Approvals CE
  • Compensated Temperature Limits 32 to 140°F (0 to 60°C).
  • Panel Cutout 1.772 x 3.620 in (45 x 92 mm).
  • Serial Communications Modbus® RTU
  • Zero & Span Adjustments Accessible via menus.

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. In velocity of flow modes, a square root output is provided on the 4-20 mA signal to coincide with the actual flow curve. The Series DH provides extreme flexibility in power usage by allowing 120/220 VAC or 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. With all this packed into one product it is easy to see why the Digihelic® controller is the only instrument you will need for all your pressure applications.

Product 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
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