DHC DWYER | Alldatasheet

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Gages/Switches, Transmitters PRESSURE 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 manageble. 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. BENEFITS/FEATURES

  • One instrument saves inventory, installation time, and money with its measurement versatility and innovative 3-in-1 design
  • Measurement precision via full-scale accuracy of 1.5% or better on extremely low ranges, and 0.5% for ranges at or above 1 in w.c.
  • Safe and secure with security menu programming
  • Simplified field upgrade to DHC pressure controller with optional stainless steel bezel

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 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. DIGIHELIC® DIFFERENTIAL PRESSURE CONTROLLER 3-in-1 Differential Pressure Controller SERIES DHC MODEL CHART Model Range Model Range DHC-002 DHC-003 DHC-004 DHC-006 DHC-008 DHC-009 DHC-010 DHC-011 DHC-012 DHC-202 DHC-203 DHC-204 DHC-206 0.25 in w.c. 0.5 in w.c. 1 in w.c. 2.5 in w.c. 5 in w.c. 10 in w.c. 25 in w.c. 50 in w.c. 100 in w.c. ±0.25 in w.c. ±0.5 in w.c. ±1 in w.c. ±2.5 in w.c. DHC-208 DHC-209 DHC-053 DHC-055 DHC-056 DHC-253 DHC-255 DHC-256 DHC-082 DHC-084 DHC-282 DHC-284 ±5 in w.c. ±10 in w.c. 60 Pa 125 Pa 250 Pa ±60 Pa ±125 Pa ±250 Pa 6 mm w.c. 25 mm w.c. ±6 mm w.c. ±25 mm w.c. ACCESSORIES Model Description A-299 A-300 A-301 A-302 A-302F-A A-330 A-331 A-489 Surface mounting bracket Flat flush mounting bracket Static pressure tip for 1/4˝ metal tubing connection Static pressure tip, for 3/16˝ and 1/8˝ ID plastic or rubber tubing. 303 SS Static pressure tip with mounting flange, for 3/16˝ I.D. rubber or plastic tubing. 4˝ insertion depth, includes mounting screws 1/8˝ pipe plug, socket hex, plated steel. 1/8˝ NPT filter vent plug, nylon and sintered metal 4˝ straight static pressure tip with flange CALIBRATION SERVICES AVAILABLE Modbus® is a registered trademark of Schneider Automation, Inc. 1-3/8 [34.93] [20.96] 1 [25.40] HIGH PRESSURE PORT LOW PRESSURE PORT 1 [25.40] 1/8 FEMALE NPT HIGH PRESSURE CONNECTION 3x Ø3/16 [4.77] HOLES EQUALLY SPACED ON A 4-1/8 [104.78] B.C. SURFACE MOUNTING 1/8 FEMALE NPT LOW PRESSURE CONNECTION 1/2 [12.70] 1-43/64 [42.34] [5.84] OPTIONS Use order add suffix: Description -FC -NIST -SS Factory calibration certificate NIST traceable calibration certificate 304 brushed stainless steel bezel Example: DHC-202-FC