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Light gray rectangular digital differential pressure gauge with 5 in dial and display

Dwyer Instruments Inc.

Dwyer Instruments DM-1104 Digital Differential Pressure Gauge 5 in 0.125

SKU CH-Q5AT-PDB4V

Digital differential pressure gauge with ±1.00% accuracy and multiple display units

  • Color and finishLight Gray
  • Product typeElectronic
  • +/- 1.00 % accuracy for reliable differential readings
  • Eight selectable units cover in Hg, in wc, kPa, mBar, mm Hg, mm wc, Pa, psi
  • 5 in dial with 0.125 resolution shows small pressure changes clearly
  • Powered by 9 V battery or 9 to 24 V DC line supply for flexible installation
  • Glass-filled plastic case in light grey protects electronics in tough environments

Digital Differential Pressure Gauge

The Dwyer Instruments DM-1104 is a digital differential pressure gauge built for technicians who need to measure pressure differences in HVAC, laboratory or industrial processes. It provides selectable readouts in inches of mercury, inches of water column, kilopascals, millibars, millimetres of mercury, millimetres of water column, pascals and psi with a stated accuracy of +/- 1.00 percent.

Installation and Common Issues

The instrument operates from a 9V DC battery or an external 9 to 24V DC line-power source, allowing bench or panel mounting without special wiring. A frequent issue is forgetting to select the correct display unit before recording data, which leads to misinterpreted readings.

Pre-Order Checks

Verify that the process media is compatible with the gauge's wetted materials and that the expected differential pressure falls within the 0.125 range indicated for this model. Confirm that a 9V battery or a suitable 9 to 24V DC supply is available at the mounting location.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $233.99
Pricier than about 79% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameDWYER INSTRUMENTS
Color and finishLight Gray
Product typeElectronic

Questions about this item

How can I verify the gauge is reading within the stated accuracy after installation?

Apply a known reference pressure and confirm the display stays within +/- 1.00 Percent of that value across the selected unit.

What ships with the DM-1104 and what must I source separately?

The gauge ships with a 9V DC battery installed; a 9 to 24V DC line-power supply is not included and must be purchased if you prefer wired operation.

Which DM-1000 series model should I choose for a 0.125 in wc range?

Select the DM-1104, which is specified for a 0.125 in wc nominal dial range.

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