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Low Differential Pressure, Digital Pressure Gauge

0 to 0.1 inH2O, Differential Pressure


Item# DM-001

In stock

Lead Time (If not in stock): 8 Days
0 to 0.1 inH2O, Differential Pressure DM-001 DM-001

Dwyer Instruments is now a DwyerOmega brand. We're working together to bring you the best products in a single shopping experience.

  • Reduced installation time through zero and span controls that provides quick and easy calibration
  • Fast and easy setup and calibration with push-button zero and span controls
  • Immediate corrective action can be taken by local alerts via the easy-to-read LCD display
  • Applications include: differential pressure across filters, fan control, static pressures in ducts of buildings, and room pressurization monitoring

DM-001 Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Accuracy Value
Pressure Range
Pressure Type
Pressure Port Type
Pressure Port Size
Power Source
Accuracy Class
Electrical output
Output Signal
Additional Features
Number of Digits

  • Stability < ±1%/year FSO
  • Weight 7.04 oz (200 g).
  • Accuracy Value ±1% FSO for all ranges except 0.25 in w.c. @ ±2% FSO, and ranges at or below ±0.1 in w.c. @ ±4% FSO.
  • Current Consumption 21 mA max
  • Housing Polycarbonate
  • Ingress Protection NEMA 4X (IP66).
  • Loop Resistance 0 to 1250 Ω max
  • Output Signal 4-20 mA (2-wire)
  • 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
  • Service Air and non-combustible, compatible gases
  • Supply Voltage 10-35 VDC (2-wire)
  • Temperature Limits '-20 to 70°C (-4 to 158°F)
  • Thermal Effect '0.036% FS/°C (0.02% FS/°F)
  • Zero and Span Adjustments Push-button

Dwyer Instruments is now a DwyerOmega product brand


The Series DM Digimag® Differential Pressure Transmitter senses the pressure of air and compatible gases and sends a standard 4-20 mA output signal. The DM housing is specifically designed to mount in the same diameter cutout as a standard Magnehelic® gage. A wide range of models are available factory calibrated to specific ranges. The polycarbonate molded housing features integral pressure connections, which reduces installation time. Digital push-button zero and span simplify calibration over typical turn-potentiometers. A single push-button allows field selection of 4 to 6 engineering units, depending on the range.

Product Applications

  • Differential pressure across filters
  • Fan control
  • Static pressures in ducts or buildings
  • Room pressurization monitoring


Display Units: psi, kg/cm², bar, in Hg, ft w.c., kPa, MPa, %FS, in w.c., mbar, cm w.c., mm Hg, or oz/in² (choices depend on range).
Test Mode:Simulates input over the range without pressuring to easily test switches and transmitter output feature.
Fail-safe: For sensor failure, over pressure, high temperature limit, low temperature limit, or keypad short. User chooses if relay is de-energized, energized, or no action. With transmitter option, user chooses an output of 3.6 mA 22 mA, or no action.
Alternation: Selectable alternation of set points between the relays for even wear on duplex pump applications.
Versatile Compact Package: Can replace a separate gage, two switches, and a transmitter in a system saving, money, installation time, and panel space.
Fully Programmable:To meet simple or complex application needs.
Weatherproof Housing: Ideal for a wide variety of applications with panel mount, flush mount, or pipe mount ability.
DS-DM-dims DS-DM-wiring DS-DM-order
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