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Series DHII Digihelic Differential Pressure Controller

Brand: Dwyer Instruments, LLC
Does not ship to OH, United States
The Series DHII takes all the fabulous features of the standard Digihelic Pressure Controller and packages them in a robust NEMA 4 (IP66) housing. 

The Digihelic II Pressure Controller combines the 2 SPDT control relays, 4-20 mA process output and Modbus communications with a large, brightly backlit 4 digit LCD display that can easily be seen from long distances. 

The electrical wiring has also been enhanced in the DHII with its detachable terminal blocks. The removable terminals allow the install to easily wire the terminal block outside the housing and then attach to the circuit board, reducing wiring difficulties and installation time on the process. 

The Digihelic II Differential Pressure Control in the new NEMA 4 (IP66) enclosure enables this product to be the perfect choice when mounting pressure controls outdoors in such applications as rooftop air handlers.

This housing also makes it the ideal solution for surface mounting in clean rooms or facilities where water or a cleaning solution is utilized in maintaining plant cleanliness.
Features
  • NEMA 4 housing enables a range of uses both outdoors or indoors where water is present
  • Large backlight LCD display provides local reading from a distance
  • Detachable terminal blocks reduce wiring difficulties saving installation time
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The Series DHII takes all the fabulous features of the standard Digihelic Pressure Controller and packages them in a robust NEMA 4 (IP66) housing. 

The Digihelic II Pressure Controller combines the 2 SPDT control relays, 4-20 mA process output and Modbus communications with a large, brightly backlit 4 digit LCD display that can easily be seen from long distances. 

The electrical wiring has also been enhanced in the DHII with its detachable terminal blocks. The removable terminals allow the install to easily wire the terminal block outside the housing and then attach to the circuit board, reducing wiring difficulties and installation time on the process. 

The Digihelic II Differential Pressure Control in the new NEMA 4 (IP66) enclosure enables this product to be the perfect choice when mounting pressure controls outdoors in such applications as rooftop air handlers.

This housing also makes it the ideal solution for surface mounting in clean rooms or facilities where water or a cleaning solution is utilized in maintaining plant cleanliness.
Features
  • NEMA 4 housing enables a range of uses both outdoors or indoors where water is present
  • Large backlight LCD display provides local reading from a distance
  • Detachable terminal blocks reduce wiring difficulties saving installation time
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Specifications

Brand

Accuracy

  • ± 0.5 % at 25° C (77° F) Including Hysteresis & Repeatability, (After 1-Hour Warm-Up)

Adjustment Type

  • Field Adjustable

Approvals & Certifications

  • CE
  • UL

Compensated Temperature

  • 0° to 60° C (32° to 140° F)

Consumption

  • 132-240 Vdc, 7 VA, Max.
  • High Voltage Power = 100 to 240 Vac
  • Low Voltage Power = 24 Vdc - 130 mA - Max.

Display

  • 4-Digit Backlit LCD 0.6” Height. LED Indicators for Set Point & Alarm Status

Electrical Connectors

  • 1/2” Watertight Conduit
  • Euro Typical Removable Terminal Blocks with Watertight Conduit Fittings

Electrical Rating

  • 8 A at 240 Vac Resistive

Enclosure, Body Material

  • Aluminum, Glass

Environmental Protection

  • IP66
  • NEMA 4

Media

  • Air & Non-Combustible, Compatible Gases

NPT Connection

  • 1/8” NPT Female

Output

  • 4-20 mA DC Into 900 ohms, Max.

Power Requirement

  • 50/400 Hz or 132 to 240 Vdc
  • High Voltage Power = 100 to 240 Vac
  • Low Voltage Power = 24 Vdc ± 20 %

Response Time

  • 250 milliseconds (Dampening Set to 1)

Sensor Orientation

  • Mount Unit in Horizontal Plane

Set Point - Decreasing

  • Inches WC: -10 to 100

Set Point - Increasing

  • Inches WC: -10 to 100

Span & Zero Adjustments

  • Accessible Via Menus

Stability

  • < ± 1 % Per Year

Switch Type

  • 2 SPDT Relays

Temperature Range

  • 0° to 60° C (32° to 140° F)

Thermal Drift

  • 0.036/°C (0.020 %/°F) from 25° C (77° F)
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Applications

  • Air Handlers
  • Clean Rooms
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