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Starting at $623.85USD
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Dwyer

DHC Digihelic Differential Press. Controller

In Stock *

A 3-in-1 instrument possessing a digital display gage, control relay switches, and a transmitter with both current and voltage outputs

Starting at
$623.85USD
Some configurations are in stock for immediate delivery!
Have questions? We're here to help!
Have questions? We're here to help!
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 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.

• 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
Power Consumption3 VA max.
Output Signals4-20 mA (4-wire); 0-10 V, 0-5 V, 1-5 V, and 2-10 V (4-wire).
CommunicationBACnet MS/TP or Modbus® RTU.
Supported Baud Rate9600, 19200, 38400, 57600, 76800, 115200.
Device Load1/8 unit load.
Zero and Span AdjustmentsAccessible via menus.
Response Time400 ms (damping set to 0).
DisplayBacklit LCD display, LED setpoint indicators.
Electrical Connections15 pin male high density D-sub connection. 18" (46 cm) cable with 15 conductors included.
Process Connections1/8" female NPT ports on side and back.
Enclosure RatingNEMA 4X (IP66).
Mounting OrientationNot position sensitive.
Size5" OD (127 mm) x 1.9" (48 mm) deep.
Weight8.8 oz (250 g).
ComplianceBTL, CE.
Switch Specifications
Switch Type2 SPDT relays.
Electrical Rating1 A @ 30 VAC/VDC.
Set Point AdjustmentAccessible via menus.
ServiceAir and non-combustible, compatible gases.
Wetted MaterialsConsult factory.
Housing MaterialPolycarbonate.
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 LimitsRanges > 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 Requirements12-28 VDC or 12-28 VAC 50 to 400 Hz.
• SCFM duct flow
• Filter status
• Duct or building static pressure
• Damper and fan control

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