Pressure Gauge Rentals

This category contains handheld manometers and pressure gauges useful for the monitoring and testing of HVAC systems. These instruments are capable of measurements in multiple pressure units and are useful for postive, negative, or differential pressure measurments.

Dwyer 477

Digital Manometer

Dwyer 477

This small handheld digital manometer is so easy to use that the complete operating instructions are printed on the back. Model 477 manometer rentals are available in 5 different ranges and are capable of displaying readings in up to 9 different units. Each version is instrinsically safe, capable of measuring postive, negative, or differential pressure and have multiple convenience features like one touch zeroing and the ability to store up to 20 readings.

Ranges
Pressure (model 477–1)
0 to 20 in. H2O
Accuracy ±0.5% @ 60 to 78°F or ±1.5%
Temperature compensated range 32 to 104°F
Units displayed psid, in. H2O, mm H2O, in. Hg, mm Hg, Pa, kPa, bar, and mbar
Max pressure 11 psi
Pressure (model 477–2)
0 to 40 in. H2O
Accuracy ±0.5% @ 60 to 78°F or ±1.5%
Temperature compensated range 32 to 104°F
Units displayed psid, in. H2O, mm H2O, in. Hg, mm Hg, Pa, kPa, bar, and mbar
Max Pressure 11 psi
Pressure (model 477–3)
0 to 200 in. H2O
Accuracy ±0.5% @ 60 to 78°F or ±1.5%
Temperature compensated range 32 to 104°F
Units displayed psid, in. H2O, mm H2O, in. Hg, mm Hg, kPa, bar, and mbar
Max pressure 29 psi
Pressure (model 477–4)
0 to 10 psid
Accuracy ±0.5% @ 60 to 78°F or ±1.5%
Temperature compensated range 32 to 104°F
Units displayed psid, in. H2O, mm H2O, in. Hg, mm Hg, kPa, bar, and mbar
Max pressure 58 psi
Pressure (model 477–5)
0 to 30 psid
Accuracy ±0.5% @ 60 to 78°F or ±1.5%
Temperature compensated range 32 to 104°F
Units displayed psid, in. H2O, in. Hg, mm Hg, kPa, bar, and mbar
Max pressure 58 psi
Features
  • Measures positive, negative, or differential pressure
  • Displays pressure in up to 9 different units
  • Small and lightweight
  • Easy to use
  • Instructions printed on instrument
  • Stores up to 20 readings
  • Audible confirmation of stored reading
  • Backlit LCD display
  • One touch electronic zeroing
  • Audible over pressure alarm
  • Intrinsically safe
Specifications
  • Connections 2 barbed fittings for use with 1/8″ or 3/16″ I.D. tubing
  • Input power 9V alkaline battery
  • Runtime 100 hours
  • Operating temperature 0 to 140°F
  • Storage temperature -4 to 176°F
  • Dimensions 6.5″ x 3″ x 1″
  • Weight 10.2 oz
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Configuration

Dwyer Magnehelic Gauge

Analog Air Pressure Gauge/Transmitter

Dwyer Magnehelic Gauge

These analog pressure gauges provide simple and accurate measurements for very low pressures by simply connecting to their NPT fittings. Dual high and low port fittings allow multiple connection configurations for measuring positive, negative, or differential pressure, and they are easily zeroed with a simple adjustment. Additionally for use with a datalogger or process control device these gauges feature built in 4 to 20 mA transmitters with independent span and zero controls.

Ranges
Pressure (605–11)
-0.25 to 0.25 in. H2O
Mechanical accuracy ±3%
Electrical accuracy ±2%
Temperature compensated range 32 to 120°F
Maximum pressure 25 psi
Pressure (605–1)
0 to 1 in. H2O
Mechanical accuracy ±2%
Electrical accuracy ±2%
Temperature compensated range 32 to 120°F
Maximum pressure 25 psi
Pressure (605–2)
0 to 2 in. H2O
Mechanical accuracy ±%
Electrical accuracy ±0.5%
Temperature compensated range 32 to 120°F
Maximum pressure 10 in. H2O
Pressure (605–10)
0 to 10 in. H2O
Mechanical accuracy ±2%
Electrical accuracy ±0.5%
Temperature compensated range 32 to 120°F
Maximum pressure 5 psi
Pressure (605–60Pa)
0 to 60 Pa
Mechanical accuracy ±4%
Electrical accuracy ±2%
Temperature compensated range 32 to 120°F
Maximum pressure 25 psi
Features
  • Analog gauge with built in transmitter
  • For measuring postive, negative, or differential pressure
  • Overpressure protection
  • External gauge zero adjustment
  • Zero and span transmitter adjustments
  • Requires no lubrication or maintenance
Specifications
  • Connections 1/8″ female NPT
  • Transmitter input power 10 to 35 VDC
  • Transmitter analog output 4 to 20 mA
  • Operating temperature 20 to 120°F
  • Dimensions 4″ dial face x 5″ O.D. x 0.7″ deep
  • Weight 28.6 oz
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Configuration
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Search Terms

  • Air Monitoring
  • Pressure Gauges
  • Dwyer 477
  • Dwyer Magnehelic Gauge

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