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  1. Pressure Controllers

Dwyer DH3 Digihelic Differential Pressure Controller

Digital display gauge, control relay switches, and a transmitter with current output, photohelic gauge style housing.

Dwyer DH3 Digihelic Differential Pressure Controller
Dwyer DH3 Digihelic Differential Pressure Controller
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  • By Dwyer Instruments
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Overview

Features

  • Air and non-combustible, compatible gases
  • Die cast aluminum case and bezel housing materials
  • Ranges:
    • 0 to 0.25 up to 0 to 100 inH2O
    • -0.25 to 0.25 up to to -10 to 10 inH2O (bi-directional)
  • Accuracy:
    • ±1.5% for 0.25" and ±0.25˝ w.c. ranges
    • ±1% 0.5" to 5" w.c. and corresponding bi-directional (except ±2.5˝ w.c.)
    • ±0.5% all other ranges
  • Process connection: 1/8" female NPT, (side or back connection)
  • 15 pin male high density D-sub connection
  • 18" (46cm) cable with 10 conductors included

Description

The Dwyer DH3 Digihelic Differential Pressure Controller is a 3 in 1 instrument possessing a digital display gauge, control relay switches, and a transmitter with current output all packed in the popular Photohelic gauge style housing. Combining these 3 features allows the reduction of several instruments with one product, saving inventory, installation time and money. The Digihelic® controller is the ideal instrument for pressure, velocity and flow applications, achieving a 1% full scale accuracy on ranges down to the extremely low 0.25 in w.c. to 2.5 in w.c. full scale. Ranges of 5 in w.c. and greater maintain 0.5% F.S. accuracy. Bi-directional ranges are also available.

The Series DH3 Digihelic controller allows the selection of pressure, velocity or volumetric flow operation in several commonly used engineering units. 2 SPDT control relays with adjustable deadbands are provided along with a scalable 4-20 mA process output.

Applications for the DH3 include:

  • SCFM flow in ducts
  • Filter status
  • Static pressures in ducts or buildings
  • Damper control
  • Fan control

Documents

Spec Sheets

  • Dwyer DH3 Digihelic Differential Pressure Controller Datasheet PDF (184 KB)

Manuals

  • Dwyer DH3 Digihelic Differential Pressure Controller Manual PDF (693 KB)

Links

  • All possible part numbers

Accessories

Dwyer A-298 Flush Mount Bracket
Dwyer A-298 Flush Mount Bracket

Flat aluminum bracket for flush mounting Photohelic® & Capsuhelic® gauges, 603A, 605, and 3000MR.

Call for pricing
Dwyer A-370 Flush Mount Bracket
Dwyer A-370 Flush Mount Bracket

Flush mount bracket, steel with gray hammertone epoxy finish.

Call for pricing
Dwyer A-700 Power Supply
Dwyer A-700 Power Supply

Power supply, 0.5A.

Call for pricing

Applications

This product can be used in the following applications:

  • Agricultural
  • Batching / Dispensing
  • Brewing & Fermentation
  • Building Automation Systems
  • Clean Water
  • Food / Beverage
  • Irrigation
  • Oil, Gas and Petrochemical
  • Paper
  • Pharmaceutical

Need Help? Call a Temperature engineer at 1-800-884-4967

We're open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET

David S. headshot David S.
Applications Engineer
Luke M. headshot Luke M.
Applications Engineer
5 years at Instrumart
Rhys D. headshot Rhys D.
Applications Engineer
Shawn D. headshot Shawn D.
Senior Applications Engineer
20 years at Instrumart
Ron J. headshot Ron J.
Temperature Engineering Lead
29 years at Instrumart
Alex A. headshot Alex A.
Senior Applications Engineer
19 years at Instrumart
Dwight M. headshot Dwight M.
Senior Applications Engineer
28 years at Instrumart
David S. headshot David S.
Applications Engineer
Luke M. headshot Luke M.
Applications Engineer
5 years at Instrumart
Rhys D. headshot Rhys D.
Applications Engineer
Shawn D. headshot Shawn D.
Senior Applications Engineer
20 years at Instrumart
Ron J. headshot Ron J.
Temperature Engineering Lead
29 years at Instrumart
Alex A. headshot Alex A.
Senior Applications Engineer
19 years at Instrumart
Dwight M. headshot Dwight M.
Senior Applications Engineer
28 years at Instrumart
David S. headshot David S.
Applications Engineer

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Dwyer DH3 Digihelic Differential Pressure Controller
Dwyer DH3 Digihelic Differential Pressure Controller
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