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DH Dwyer Digihelic Differential Pressure Controller

$505.00 -- Digital display gage, relay control, current output, panel-mount

Purchase DH Dwyer Digihelic Differential Pressure Controller

Dwyer DH Digital Differential Pressure Controller. LCD, relay control, current output, panel-mount


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. 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 0.5% full scale accuracy on ranges from 0.25 to 100 in. w.c.  Bi-directional ranges are also available, but without velocity and volumetric flow.

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 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.

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.


DH Digital Differental Pressure Controller Specifications

     Service: Air and non-combustible, non-conducting compatible gases.
      Wetted Materials: Consult Factory.
      Housing Material: ABS plastic, UL approved 94-V-0.
      Accuracy: �0.5% at 77�F (25�C) including hysteresis and repeatability.
      Stability: < �1% per year.
      Pressure Limits: Ranges =2.5" w.c. = 2 psi; 5": 5 psi; 10": 5 psi;
          25": 5 psi; 50": 5 psi; 100": 9 psi.
      Temperature Limits: 32 to 140�F (0 to 60�C).
      Compensated Temperature Limits: 32 to 140�F (0 to 60�C).
      Thermal Effects: 0.020%/�F (0.036/�C) from 77�F (25�C).
      Power Requirements: High Voltage Power = 100 to 240 VAC, 50 to 400 Hz or
          132 to 240 VDC. Low Voltage Power = 24 VAC �20%.
      Power Consumption: Low Voltage Power = 24 VDC - 130 mA max.
          High Voltage Power = 100 to 240 VAC, 132 to 240 VDC - 7VA max.
      Output Signal: 4-20 mA DC into 900 ohms max.
      Zero & Span Adjustments: Accessible via menus.
      Response Time: 250 ms.
      Display: 4 digit LCD 0.4" height. LED indicators for set point and alarm status.
      Electrical Connections: Screw terminals.
      Process Connections: Compression fitting for use with 3/16" OD x 1/8" ID tubing.
      Enclosure Rating: Face designed to meet NEMA 4X (IP66).
      Mounting Orientation: Mount unit in horizontal plane.
      Size: 1/8 DIN.
      Panel Cutout: 1.772 x 3.620" (45 x 92 mm).
      Weight: 14.4 oz (408 g).
      Serial Communications: Modbus� RTU, RS485, 9600 Baud.
      Agency Approvals: CE, UL

DH Applications
     � SCFM Flow in Ducts
     � Air Flow for Industrial Ovens
     � Filter Status
     � Clean Room Pressure
     � Fume Hood Air Flow
     � Medical Room Pressures
     � Static Pressures in Ducts or Buildings
     � Damper Control
     � Fan Control

Purchase DH Dwyer Digihelic Differential Pressure Controller

  • Choose Range: DH-002, 0-0.2500" wc; DH-004, 0-1.000" wc; DH-006, 0-5.000" wc; DH-007, 0-10.00" wc; DH-008, 0-25.00" wc; DH-009, 0-50.00" wc; DH-010, 0-100.0" wc; DH-012, 0.25-0-0.25" wc; DH-014, 1-0-1" wc; DH-015, 2.5-0-2.5" wc; DH-016, 5-0-5" wc; DH-017, 10-0-10" wc

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Dwyer AT2DH3 ATEX-Approved DH3 Digital Differential Pressure Controller LCD, relay control and transmitters all in one. AT2DH3 ATEX Approved Differential Pressure Controller -- Dwyer AT2DH3 ATEX Digital Differential Pressure Controller User Manual Dwyer AT2DH3 ATEX Digital Differential Pressure Controller Dimensional Drawing Dwyer AT2DH3 ATEX Approval Document      . . .

Dwyer DH3 Digital Differential Pressure Controller. LCD, relay control and transmitters all in one. DH3 Dwyer Digihelic Differential Pressure Controller -- Dwyer DH3 Digital Differential Pressure Controller User Manual Dwyer DH3 Digital Differential Pressure Controller Dimensila Drawing The Dwyer DH3 Digihelic� Differential Pressure Controller is a 3 in 1 instrument possessing a digital display gage, control . . .

Dwyer DHII Digital Differential Pressure Controller. NEMA 4X, LCD, 2 SPDT, 4-20mA process output DHII Dwyer Digihelic Differential Pressure Controller -- Dwyer DHII Differental Pressure Controller User Manual Dwyer DHII Differential Pressure Controller Dimensional Drawing The Digihelic� Controller just got better with the New Series DHII Differential Pressure Controller. The DHII . . .



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