®

PRESSURE
SERIES DHC

DIGIHELIC® DIFFERENTIAL PRESSURE CONTROLLER

3-in-1 Differential Pressure Controller
CALIBRATION SERVICES AVAILABLE

53/64 HIGH
[20.96] PRESSURE
1/8 FEMALE NPT HIGH PORT
PRESSURE CONNECTION

1 [25.40] 1 [25.40]

1-3/8 1/8 FEMALE NPT LOW

[34.93] PRESSURE CONNECTION LOW
3x Ø3/16 [4.77] HOLES EQUALLY PRESSURE
SPACED ON A 4-1/8 [104.78] B.C. PORT
SURFACE MOUNTING
1/2 [12.70] 15/64
1/2 [12.70] [5.84] Ø5 [127.00]
1-43/64
[42.34]

The Series DHC Digihelic® Differential Pressure Controller is a 3-in-1 instrument SPECIFICATIONS
possessing a digital display gage, control relay switches, and a transmitter with both Service: Air and non-combustible, compatible gases.
current and voltage outputs. Combining these 3 features allows the reduction of Wetted Materials: Consult factory.
several instruments with one product, saving inventory, installation time, and cost. Housing Material: Polycarbonate.
The Series DHC Digihelic® differential pressure controller is the ideal instrument for Accuracy: ±0.5% FSO for all ranges, except 0.5 in w.c. @ ±1% FSO, and ranges
pressure, velocity, and volumetric flow applications reading in several commonly at or below ±0.25 in w.c. @ ±1.5% FSO.
used engineering units with optional unidirectional or bidirectional ranges. These Stability: < ±1% / year FSO.
units achieve a 1.5% or better accuracy on extremely low ranges, and 0.5% accuracy Pressure Limits: Ranges > 1 in w.c.: 6 psi max operation, 6 psi burst; Ranges ≤ 1
for ranges at or above 1 in w.c. Calibration can be performed in the field, making in w.c.: 3.6 psi max operation, 6 psi burst.
maintaining its accuracy more manageble. Additionally, the Series DHC Digihelic® Temperature Limits: -4 to 158°F (-20 to 70°C).
differential pressure controller includes 2 SPDT control relays with adjustable Thermal Effects: .02% FS / °F (.036% FS / °C).
deadbands. Programming the unit is simple using the built-in menu. With scalable Power Requirements: 12-28 VDC or 12-28 VAC 50 to 400 Hz.
4-20 mA, selectable voltage process outputs, and selectable Modbus® or BACnet Power Consumption: 3 VA max.
communication, this controller can easily fit into your application. 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.
BENEFITS/FEATURES Supported Baud Rate: 9600, 19200, 38400, 57600, 76800, 115200.
Gages/Switches, Transmitters

• One instrument saves inventory, installation time, and money with its measurement Device Load: 1/8 unit load.
Differential Pressure

versatility and innovative 3-in-1 design Zero and Span Adjustments: Accessible via menus.
• Measurement precision via full-scale accuracy of 1.5% or better on extremely low Response Time: 400 ms (damping set to 0).
ranges, and 0.5% for ranges at or above 1 in w.c. Display: Backlit LCD display, LED setpoint indicators.
• Safe and secure with security menu programming Electrical Connections: 15 pin male high density D-sub connection. 18˝ (46 cm)
• Simplified field upgrade to DHC pressure controller with optional stainless steel cable with 15 conductors included.
bezel Process Connections: 1/8˝ female NPT ports on side and back.
Enclosure Rating: NEMA 4X (IP66).
APPLICATIONS Mounting Orientation: Not position sensitive.
• SCFM duct flow Size: 5˝ OD (127 mm) x 1.9˝ (48 mm) deep.
• Filter status Weight: 8.8 oz (250 g).
• Duct or building static pressure Compliance: BTL, CE.
• Damper and fan control
SWITCH SPECIFICATIONS
Switch Type: 2 SPDT relays.
MODEL CHART Electrical Rating: 1 A @ 30 VAC/VDC.
Model Range Model Range Set Point Adjustment: Accessible via menus.
DHC-002 0.25 in w.c. DHC-208 ±5 in w.c.
DHC-003 0.5 in w.c. DHC-209 ±10 in w.c.
DHC-004 1 in w.c. DHC-053 60 Pa
DHC-006 2.5 in w.c. DHC-055 125 Pa
DHC-008 5 in w.c. DHC-056 250 Pa
DHC-009 10 in w.c. DHC-253 ±60 Pa
DHC-010 25 in w.c. DHC-255 ±125 Pa
DHC-011 50 in w.c. DHC-256 ±250 Pa
DHC-012 100 in w.c. DHC-082 6 mm w.c.
DHC-202 ±0.25 in w.c. DHC-084 25 mm w.c. ACCESSORIES
DHC-203 ±0.5 in w.c. DHC-282 ±6 mm w.c. Model Description
DHC-204 ±1 in w.c. DHC-284 ±25 mm w.c. A-299 Surface mounting bracket
DHC-206 ±2.5 in w.c. A-300 Flat flush mounting bracket
A-301 Static pressure tip for 1/4˝ metal tubing connection
OPTIONS A-302 Static pressure tip, for 3/16˝ and 1/8˝ ID plastic or rubber tubing.
Use order add suffix: Description A-302F-A 303 SS Static pressure tip with mounting flange, for 3/16˝ I.D. rubber or
-FC Factory calibration certificate plastic tubing. 4˝ insertion depth, includes mounting screws
-NIST NIST traceable calibration certificate A-330 1/8˝ pipe plug, socket hex, plated steel.
-SS 304 brushed stainless steel bezel A-331 1/8˝ NPT filter vent plug, nylon and sintered metal
Example: DHC-202-FC A-489 4˝ straight static pressure tip with flange

Modbus® is a registered trademark of Schneider Automation, Inc.