SERIES DHC DIGIHELIC® DIFFERENTIAL PRESSURE CONTROLLER

SERIES DHC DIGIHELIC® DIFFERENTIAL PRESSURE CONTROLLER
Dwyer

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Description

SERIES DHC DIGIHELIC® DIFFERENTIAL PRESSURE CONTROLLER
3-in-1 Differential Pressure Controller

The Series DHC Digihelic® Differential Pressure Controller is a 3-in-1 instrument possessing a digital display gage, control relay switches, and a transmitter with both current and voltage outputs. Combining these 3 features allows the reduction of several instruments with one product, saving inventory, installation time, and cost. The Series DHC Digihelic® differential pressure controller is the ideal instrument for pressure, velocity, and volumetric flow applications reading in several commonly used engineering units with optional unidirectional or bidirectional ranges. These units achieve a 1.5% or better accuracy on extremely low ranges, and 0.5% accuracy for ranges at or above 1 in w.c. Calibration can be performed in the field, making maintaining its accuracy more manageable. Additionally, the Series DHC Digihelic® differential pressure controller includes 2 SPDT control relays with adjustable deadbands. Programming the unit is simple using the built-in menu. With scalable 4-20 mA, selectable voltage process outputs, and selectable Modbus® or BACnet communication, this controller can easily fit into your application.

Applications:

  • SCFM duct flow
  • Filter status
  • Duct or building static pressure.
  • Damper and fan control

Specifications:

  • Service: Air and non-combustible, compatible gases.
  • Wetted Materials: Consult factory.
  • Housing Material: Polycarbonate.
  • Accuracy: ±0.5% FSO for all ranges, except 0.5 in w.c. @ ±1% FSO, and ranges at or below ±0.25 in w.c. @ ±1.5% FSO.
  • Stability: < ±1% / year FSO.
  • Pressure Limits: Ranges > 1 in w.c.: 6 psi max operation, 6 psi burst; Ranges ≤ 1 in w.c.: 3.6 psi max operation, 6 psi burst.
  • Temperature Limits: -4 to 158°F (-20 to 70°C).
  • Thermal Effects: .02% FS / °F (.036% FS / °C).
  • Power Requirements: 12-28 VDC or 12-28 VAC 50 to 400 Hz.
  • Power Consumption: 3 VA max.
  • Output Signal: 4-20 mA (4-wire); 0-10 V, 0-5 V, 1-5 V, and 2-10 V (4-wire).
  • Communication: BACnet MS/TP or Modbus® RTU.
  • Supported Baud Rate: 9600, 19200, 38400, 57600, 76800, 115200.
  • Device Load: 1/8 unit load.
  • Zero and Span Adjustments: Accessible via menus.
  • Response Time: 400 ms (damping set to 0).
  • Display: Backlit LCD display, LED setpoint indicators.
  • Electrical Connections: 15 pin male high density D-sub connection. 18˝ (46 cm) cable with 15 conductors included.
  • Process Connections: 1/8˝ female NPT ports on side and back.
  • Enclosure Rating: NEMA 4X (IP66).
  • Mounting Orientation: Not position sensitive.
  • Size: 5˝ OD (127 mm) x 1.9˝ (48 mm) deep.
  • Weight: 8.8 oz (250 g).
  • Compliance: BTL, CE.

Switch Specifications:

  • Switch Type: 2 SPDT relays.
  • Electrical Rating: 1 A @ 30 VAC/VDC.
  • Set Point Adjustment: Accessible via menus.

Models:

  • DHC-002 Differential pressure controller, range 0.25″ w.c.
  • DHC-003 Differential pressure controller, range 0.5″ w.c.
  • DHC-004 Differential pressure controller, range 1.0″ w.c.
  • DHC-006 Differential pressure controller, range 2.5″ w.c.
  • DHC-008 Differential pressure controller, range 5.0″ w.c.
  • DHC-009 Differential pressure controller, range 10.0″ w.c.
  • DHC-010 Differential pressure controller, range 25.0″ w.c.
  • DHC-011 Differential pressure controller, range 50.0″ w.c.
  • DHC-012 Differential pressure controller, range 100.0″ w.c.
  • DHC-202 Differential pressure controller, range ±0.25″ w.c.
  • DHC-203 Differential pressure controller, range ±0.5 in w.c.
  • DHC-204 Differential pressure controller, range ±1.0″ w.c.
  • DHC-206 Differential pressure controller, range ±2.5″ w.c.
  • DHC-208 Differential pressure controller, range ±5 in w.c.
  • DHC-209 Differential pressure controller, range ±10.0″ w.c.
  • DHC-053 Differential pressure controller, range 60 Pa
  • DHC-055 Differential pressure controller, range 125 Pa
  • DHC-056 Differential pressure controller, range 250 Pa
  • DHC-253 Differential pressure controller, range ±60 Pa
  • DHC-255 Differential pressure controller, range ±125 Pa
  • DHC-256 Differential pressure controller, range ±250 Pa
  • DHC-082 Differential pressure controller, range 6 mm w.c.
  • DHC-084 Differential pressure controller, range 25 mm w.c.
  • DHC-282 Differential pressure controller, range ±6 mm w.c.
  • DHC-284 Differential pressure controller, range ±25 mm w.c.

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