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SERIES DHC
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HIGH
[42.34]
DIGIHELIC® DIFFERENTIAL PRESSURE CONTROLLER
3-in-1 Differential Pressure Controller
CALIBRATION SERVICES AVAILABLE
PRESSURE
®
Differential Pressure
Gages/Switches, Transmitters
[20.96]
1-3/8
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
pressure, velocity, and volumetric ow 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 eld, 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
communication, this controller can easily t 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
• Simplied eld upgrade to DHC pressure controller with optional stainless steel
bezel
APPLICATIONS
• SCFM duct ow
• Filter status
• Duct or building static pressure
• Damper and fan control
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
OPTIONS
Use order add sufx: Description
-FC
-NIST
-SS
Example: DHC-202-FC
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.
®
differential pressure controller is the ideal instrument for
DHC-208
DHC-209
DHC-053
DHC-055
DHC-056
DHC-253
DHC-255
DHC-256
DHC-082
DHC-084
DHC-282
DHC-284
Factory calibration certicate
NIST traceable calibration certicate
304 brushed stainless steel bezel
±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.
1/8 FEMALE NPT HIGH
PRESSURE CONNECTION
1 [25.40]
1/2 [12.70]
®
or BACnet
PRESSURE
PORT
1 [25.40]
1/8 FEMALE NPT LOW
PRESSURE CONNECTION
3x Ø3/16 [4.77] HOLES EQUALLY
SPACED ON A 4-1/8 [104.78] B.C.
SURFACE MOUNTING
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
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.
ACCESSORIES
Model Description
A-299
A-300
A-301
A-302
A-302F-A
A-330
A-331
A-489
Surface mounting bracket
Flat ush 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 ange, 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 lter vent plug, nylon and sintered metal
4˝ straight static pressure tip with ange
LOW
PRESSURE
PORT
®
RTU.
15/64
[5.84]
Ø5 [127.00]
1/2 [12.70]
1-43/64
Modbus® is a registered trademark of Schneider Automation, Inc.
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