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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 flow applications, achieving a 1.5% full scale accuracy on ranges down to the extremely low 0.25" w.c. to 2.5" w.c. full scale. Ranges of 5" 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.
Programming is easy using the menu key to access 5 simplified menus which provide access to: security level; selection of pressure, velocity or flow operation; selection of engineering units; K-factor for use with flow sensors; rectangular or circular duct for inputting area in flow 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 fit your applications range and field calibration.
Please see Series AT-DH3 ATEX/IECEx Approved Digihelic® Differential Pressure Controller for ATEX approved models.
For additional ranges, see Series DHC Digihelic® Differential Pressure Controller.Product Applications
- SCFM duct flow
- Filter status
- Duct or building static pressure
- Damper and fan control
Features
- 3-in-1 instrument allows the reduction of several instruments with one product, saving inventory, installation time and money
- 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
- 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 simplifies field upgrade to DH3 pressure controller
Model | Description | Availability* | Price | |
---|---|---|---|---|
A-298 | Flat aluminum bracket for flush mounting Photohelic® & Capsuhelic® gages, 603A, 605, and 3000MR. | 1-3 days* |
$34.75 |
|
A-301 | Static pressure tip, for 1/4" metal tubing connection. | 1-3 days* |
$12.50 |
|
A-302 | Static pressure tip, for 3/16" and 1/8" ID plastic or rubber tubing. | 1-3 days* |
$11.75 |
|
A-302F-A | 303 SS Static pressure tip with mounting flange, for 3/16" I.D. rubber or plastic tubing. 4" insertion depth, includes mounting screws | 1-3 days* |
$11.75 |
|
A-320-B1 | Weatherproof enclosure, ABS, compatible with 3000MR/MRS Photohelic® switch/gage, 605 Magnehelic® differential pressure transmitter, DH3 Digihelic® pressure controller (to fit, the casing on the electrical plug must be removed), 2000 Magnehelic® gage with medium and high pressure options | 1-3 days* |
$300.00 |
|
A-370 | Flush mount bracket used with: Photohelic® 3000MR/MRS, Capsuhelic®, 631B Transmitter. Bracket is then surface mounted. Steel with gray hammertone epoxy finish. | 1-3 days* |
$41.75 |
|
A-489 | 4" 303 SS straight static pressure tip with flange, 1/4" hose barb. | 1-3 days* |
$9.00 |
|
A-700 | Power supply (0.5 A) | 1-3 days* |
$126.00 |