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475: Mark III Handheld Digital Manometer

475: Mark III Handheld Digital Manometer

Applications: Field calibration, monitoring or trouble shooting HVAC systems, clean rooms, or a wide range of other low pressure pneumatic systems. Air velocity monitoring with pitot tubes. Natural gas appliance line pressure.


  • 0-1.000 in w.c. to 0-150.0 psi
  • Measures positive, negative and differential pressures
  • Measures air velocity (please specify)
  • Rugged, extruded aluminum case
  • Lightweight, fast and easy to use
  • Selectable english/ metric units
  • FM approved
  • Intrinsicall safe for hazardous locations, Class 1, Div. 1, Group A, B, C, D, T4


Service:Air and compatible combustible gases.
Wetted Materials:Consult factory.
Accuracy:±0.5% Full Scale, 60 to 78°F (15.6 to 25.6°C); ±1.5% Full Scale from 32 to 60°F and 78 to 104°F (0 to 15.6°C and 25.6 to 40°C).
Pressure Hysteresis:±0.1% of Full Scale.
Pressure Limits:See catalog page.
Temperature Limits:0 to 140°F (-17.8 to 60°C).
Compensated Temperature Limits:32 to 104°F (0 to 40°C).
Storage Temperature Limits:-4 to 176°F (-20 to 80°C).
Display:0.42" (10.6 mm) 4-digit LCD.
Power Requirements:9 V alkaline battery, installed non-functional, user replaceable.
Process Connections:Two barbed connections for use with 1/8" (3.18 mm) or 3/16" (4.76 mm) I.D. tubing. Two compression fittings for use with 1/8" (3.18 mm) I.D. x 1/4" (6.35 mm) O.D. tubing for 475-7 & 475-8 only.
Agency Approvals:CE, FM.

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Product : 475
Series/Model Quantity Description
475: Mark III Handheld Digital Manometer