Dwyer Series DM-1000 DigiMag® Digital Differential Pressure and Flow Gages

 Known for quality, reliability and accuracy, Dwyer designs and manufactures a full-line of Controllers, Data Loggers, Gages, Manometers, Monitors, Remote Displays, Switches, Transmitters, and Accessories to measure, monitor and control pressure, air velocity, flow, fan pressure, duct, and more.

Dwyer’s wide selection extends to Gages, Transmitters, Switches, Data Loggers, and Monitors for Differential Pressure. Dwyer manufactures a range of dial and digital gages to reliably measure and display pressure difference, between two pressure sources using gas or liquid in a process flow.

Pressure, flow and piston-type gages are all found within this category. Clean design, small size and low cost with enough accuracy for all but the most demanding applications, these gages are the best around. Gages are indicators for the difference between two pressures or simply a single pressure.

The Series DM-1000 DigiMag® Digital Differential Pressure and Flow Gages monitor the pressure of air and compatible gases just as its famous analog predecessor the Magnehelic® Differential Pressure Gage. All models are factory calibrated to specific ranges. The 4-digit LCD can display readings in common English and metric units so conversions are not necessary. The simplified four button operation reduces set up time and simplifies calibration with its digital push button zero and span.


  • Field programmed reduces installation time
  • User selectable parameters for pressure, air velocity or flow permits same device for multiple applications
  • Specialized filter set point for alerts when maintenance is due
  • Security levels permit matches the correct access to right skill
  • Power versatility works with 9-24 VDC or 9 V battery allows deployment in a variety of spaces wired or not


  • Filter monitoring
  • Air velocity or flow
  • Blower vacuum monitoring
  • Fan pressure indication
  • Duct, room or building pressures
  • Clean room positive pressure indication

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ServiceAir and non-combustible, compatible gases.
Wetted MaterialsConsult factory.
Housing MaterialsGlass filled plastic.
Accuracy±1% FS including linearity, hysteresis and repeatability; ±2% FS for ranges 1" w.c. and below.
Temperature Limits0 to 140°F (-18 to 60°C).
Compensated Temperature Limits32 to 122°F (0 to 50°C).
Long Term Stability±1% FS per year.
Thermal Effect±0.05% FS/°F typ.; ±0.10% FS/°F typ. for ranges 1" w.c. and below.
Display4-digit LCD (Digits: 0.60"H x 0.33"W).
Display UpdateSelectable for 1 second, 10 minutes or update only from button push.
Pressure LimitsNormal and bi-directional ranges 5 in w.c. and lower = 2 psi (13.7 kPa); Normal and bi-directional ranges 10 in w.c. and higher = 11 psi (75 kPa).
Selectable Engineering Unitsin w.c., psi, kPa, Pa, mm w.c., mBar, in Hg, mm Hg, FS (0-100% FS).
Power Requirements9V battery, included, user replaceable or external power supply 9-24 VDC.
Current Consumption5 mA maximum.
Electrical ConnectionsRemovable terminal block for 16 to 26 AWG.
Electrical EntryCable gland for 0.114 to 0.250" (2.9 to 6.4 mm) diameter cable.
Process Connections1/8" (3 mm) ID tubing.
Enclosure RatingNEMA 4X (IP66).
Weight1.18 lb (535 g).
Size5" (127 mm) OD front face.
Battery Service LifeBattery life depending on the Display Update setting: 150 hours (typical) if Display Update = 1 second; 9 months (typical) if Display Update = 10 minutes; 1.5 years (typical) if Display Update is disabled. Battery may last up to four times longer when using lithium-based battery ULTRALIFE U9VL-J.
Agency ApprovalsCE.

Download Data Sheet: Series DM-1000 DigiMag® Digital Differential Pressure and Flow Gages

Ref: dwyer-inst.com