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2004D
Differential Pressure Gage: 0-4.0" w.c. & 0-1.0 kPa
Choose a Variant
Measurement Pressure, Max
1 kPa
0.5 inH₂O
0.25 inH₂O
0.2 inH₂O
125 Pa
1000 Pa
100 cmH2O
100 mBar
100 mmHg
100 Pa
10 cmH2O
10 kPa
10 mmHg
150 cmH2O
150 mmHg
15 cmH2O
15 kPa
1.5 kPa
15 mmHg
1 cmH2O
200 cmH2O
200 mmHg
20 cmH2O
20 kPa
20 mmHg
250 cmH2O
250 mmHg
250 Pa
25 cmH2O
25 kPa
25 mmHg
2 cmH2O
2 kPa
300 cmH2O
300 mmHg
300 Pa
30 cmH2O
30 kPa
30 mmHg
30 Pa
3 kPa
40 cmH2O
40 mmHg
4 kPa
500 Pa
50 cmH2O
50 mmHg
5 cmH2O
5 kPa
60 Pa
6 mmHg
750 Pa
80 cmH2O
80 mmHg
8 cmH2O
8 kPa
1 inH₂O
2 inH₂O
3 inH₂O
4 inH₂O
5 inH₂O
1.25 kPa
6 inH₂O
8 inH₂O
10 inH₂O
2.5 kPa
15 inH₂O
3.7 kPa
20 inH₂O
25 inH₂O
30 inH₂O
40 inH₂O
50 inH₂O
60 inH₂O
80 inH₂O
100 inH₂O
150 inH₂O
1 psi
2 psi
3 psi
4 psi
5 psi
10 psi
15 psi
20 psi
30 psi
0.125 inH₂O
50 Pa
5 mmHg
0.5 kPa
Measurement Pressure, Min
Material Construction Option
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Product Specs
<< See all Product Models| Brand |
 |
| Accuracy | ± 2 % |
| Accuracy Detail | ± 2% (-HA model ± 1) of FS (± 3% (-HA ± 1.5%) on -0, -100PA, -125PA, -10MM and ± 4% (-HA ± 2%) on -00, -60PA, -6MM ranges), throughout range at 70°F (21.1°C). |
| Compliance Note | Meets the technical requirements of EU Directive 2011/65/EU (RoHS II). Note: -SP models not RoHS approved |
| Dial Dia | 4 in |
| Dual | true |
| Enclosure Ratings | IP67 |
| GrossWeightValue | 1.3 |
| Material Construction Option | Standard |
| Materials | Aluminum, Acrylic |
| Materials, Wetted | Consult Factory |
| Measurement Pressure Type | Differential |
| Measurement Pressure, Max | 1 kPa |
| Measurement Pressure, Min | 0 kPa |
| Media Compatibility | Clean dry air / inert gas, HVAC / room air, Inert / non-reactive gases, Helium, Nitrogen, Non-Corrosive Dry Gases |
| Mounting Orientation | Vertical Diaphragm |
| Operating Temperature, Max | 140 °F |
| Operating Temperature, Min | 20 °F |
| Pressure Limits | -20 inHg to 15 psig |
| Process Connection Note | 1/8˝ female NPT duplicate high and low pressure taps - one pair side and one pair back. |
| Process Connection Size | 1/8 in |
| Process Connection Type | NPT Female |
| Safety Features | Relief plug opens at approximately 25 psig (1.72 bar), standard gages only. |
| Series ID | Series-2000-Magnehelic |
| Weight | 510 g |
| Country of Origin | United States |
| See All Specs | |
PDFs & Manuals
Accessories
3-way vent valve, plastic, 1/8" NPT to 1/4" metal tubing, 80 psi rating, replaces former Model A-310 (brass). 2.3" x .8" x .1", .10 lb.
$28.55 / each
214 In Stock
Instrument enclosure, 304SS, brushed finish, compatible with 2000 Magnehelic® gage
$997.95 / each
0 In Stock
Weatherproof enclosure, ABS, compatible with Series 2000 Magnehelic®, includes 2 sections of precut silicone tubing, banjo fittings, and threaded pressure connections pre-installed.
$289.75 / each
9 In Stock
Instrument enclosure, 304SS, brushed finish, compatible with 2000 Magnehelic® gage, DM-2000 differential pressure transmitter
$1,038.35 / each
0 In Stock
Weatherproof enclosure, ABS, compatible with Series 3000MR/MRS Photohelic®, Series 605 Magnehelic®, Series DH3 Digihelic® (to fit, the casing on the electrical plug must be removed), Series 2000 Magnehelic® with medium and high pressure options
$388.20 / each
0 In Stock
Weatherproof enclosure, ABS, compatible with Series 2000 Magnehelic®, DM-1000 DigiMag®, DM-2000, Series 605 (with -SS option), instruments with backwards compatible bezel option
$388.20 / each
0 In Stock
Brass safety relief valve, protects Magnehelic® gage or Photohelic® switch/gage against over pressure due to regulator failure, etc, opens at 10 psi. Mounts in tee fitting. 1/4" NPT(M) (use two for DP application). .5" x .5" x 1.5", .10 .lb
$68.30 / each
24 In Stock
Plastic carrying case for Magnehelic® gage of standard range, except high pressure connection, includes 9 ft (2.7m) of 3/16" ID rubber tubing, stand-hang bracket & terminal tube with holder. 9.1" x 7.4" x 3.6", 1.30 .lb
$76.20 / each
0 In Stock
Air filter kit - adapts any standard Magnehelic® gage for use as an air filter gage. Includes aluminum surface mounting bracket with screws, (2) 5 ft (1.5 m) lengths of 1/4" aluminum tubing, (2) static pressure tips & (2) molded plastic vent valves.
$59.35 / each
0 In Stock
Show Ratings & Reviews
Rated 5 out of
5
by
Nate J from
Easy To Order
Easy process and quick shipping. I love how it shows stock levels before you buy.
Date published: 2025-10-09
Rated 5 out of
5
by
Npi Peru from
2020
Unbeatable instrument in a ratio between response vs price
Date published: 2026-03-03
Rated 5 out of
5
by
Ben Hall from
Reliable and Easy to Read
Dependable differential pressure gauge. The dial is clear and easy to read, and installation was straightforward. It has performed consistently and holds calibration well. Good value for the application.
Date published: 2026-02-23
Rated 5 out of
5
by
Ronald4 from
Great product
Great product Great productGreat productGreat productGreat productGreat productGreat productGreat product
Date published: 2026-02-22
Rated 1 out of
5
by
Ronald Joyce from
No response to RMA request
Dwyer Omega your customer service is completely unresponsive. I requested an RMA on december 12th. You responded with an automated ticket 03190884 and I still have no response. This is completely unacceptable.
Date published: 2025-12-30
Rated 5 out of
5
by
PlasticFab Jen from
Consistently Reliable Pressure Gages
We buy our pressure gages here consistently for our projects and have never been disappointed. The quality is reliable and the process is user friendly.
Date published: 2025-12-19
Rated 4 out of
5
by
Dane from
Great product
Great product, works as expected. Will order again.
Date published: 2025-12-19
Rated 5 out of
5
by
Daniel Argue from
Excellent gage, excellent service
Thanks for your quick shipment of this gage. I've used Dwyeromega gages for years and they are reliable and rugged.
Date published: 2025-12-18