Submittal Sheet

ManualsBrandsDwyer ManualsHVAC SuppliesDigihelic Differential Pressure Controller (0 - .5" W.C.)

Printed in U.S.A. 5/20 DS-DH3 Rev. 2

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SERIES DH3 | DIGIHELIC

DIFFERENTIAL PRESSURE CONTROLLER

The Series DH3 Digihelic

Differential Pressure Controller is a 3-in-1

instrument possessing a digital display gage, control relay switches, and

a transmitter with current output all packed in the popular Photohelic

gage 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 ow 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% FS accuracy. Bi-directional

ranges are also available.

The Series DH3 Digihelic

controller allows the selection of pressure,

velocity or volumetric ow 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.

Programming is easy using the menu key to access 5 simplied menus

which provide access to: security level; selection of pressure, velocity

or ow operation; selection of engineering units; K-factor for use with

ow sensors; rectangular or circular duct for inputting area in ow

applications; set point control or set point and alarm operation; alarm

operation as a high, low or high/low alarm; automatic or manual alarm

reset; alarm delay; view peak and valley process reading; digital damping

for smoothing erratic process applications; scaling the 4-20 mA process

output to t your applications range and eld calibration

• A low differential pressure gage, switch & transmitter combination instrument allows for local display, high/low alarm

monitoring and connectivity to building automation systems

• Full scale accuracy of 1.5% or better even on extremely low ranges, and 0.5% for ranges above 5 in w.c. provide for greater

measurement precision

•Areliablecontrollertomeasurelowdifferentialpressure,velocityorowapplications

• Secure menu program provides access to device operation only for the right skill level

• Optional stainless steel bezel is the same installation diameter as Magnehelic

gageandsimplieseldupgradetoDH3

pressure controller

• Cleanroom monitoring

• Filter status

• Duct or building static pressure

• Damper and fan control

FEATURES/BENEFITS

DESCRIPTIONAPPLICATIONS

Note: Shown with optional -SS bezel.

Backward compatible with Magnehelic

gage.

Summary of content (4 pages)

PAGE 1
® SERIES DH3 | DIGIHELIC® DIFFERENTIAL PRESSURE CONTROLLER Note: Shown with optional -SS bezel. Backward compatible with Magnehelic® gage. FEATURES/BENEFITS • A low differential pressure gage, switch & transmitter combination instrument allows for local display, high/low alarm monitoring and connectivity to building automation systems • Full scale accuracy of 1.5% or better even on extremely low ranges, and 0.5% for ranges above 5 in w.c.
PAGE 2
SPECIFICATIONS Service Air and non-combustible, compatible gases. Wetted Materials Consult factory. Housing Material Die cast aluminum case and bezel. ±1.5% for 0.25 in and ±0.25 in w.c. ranges. Ranges 0.5 to 5 in w.c. and corresponding bi-directional (except Accuracy ±2.5 in w.c.) ±1%; All other ranges: ±0.5% @ 77°F (25°C) including hysteresis and repeatability (after 1 hour warm-up). Stability < ±1% per year. Ranges (uni- and corresponding bidirectional), ≤ 1 in w.c.: 9 psi; 2.5 and 5 in w.c.: 1.
PAGE 3
SPECIFICATIONS Service Air and non-combustible, compatible gases. Wetted Materials Consult factory. Housing Material Die cast aluminum case and bezel. ±1.5% for 0.25 in and ±0.25 in w.c. ranges. Ranges 0.5 to 5 in w.c. and corresponding bi-directional (except Accuracy ±2.5 in w.c.) ±1%; All other ranges: ±0.5% @ 77°F (25°C) including hysteresis and repeatability (after 1 hour warm-up). Stability < ±1% per year. Ranges (uni- and corresponding bidirectional), ≤ 1 in w.c.: 9 psi; 2.5 and 5 in w.c.: 1.
PAGE 4
® SERIES DH3 | DIGIHELIC® DIFFERENTIAL PRESSURE CONTROLLER Note: Shown with optional -SS bezel. Backward compatible with Magnehelic® gage. FEATURES/BENEFITS • A low differential pressure gage, switch & transmitter combination instrument allows for local display, high/low alarm monitoring and connectivity to building automation systems • Full scale accuracy of 1.5% or better even on extremely low ranges, and 0.5% for ranges above 5 in w.c.