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Handheld Digital Manometer

Series 477

Series 477 Handheld Digital Manometers are packed with features you need to make low pressure measurement and recording faster, easier and more accurate than ever. First, you can instantly select from up to nine of the most widely used pressure units without having to waste time and risk mistakes with tedious conversions. Next, a non-volatile memory function enables storage of up to 40 readings - perfect for HVAC technicians making Pitot tube traverses of airflow readings across a duct. The Series 477 is FM approved intrinsically safe for hazardous locations, Class 1, Div. 1, Group A, B, C, D, T4.

  • Service: Air and compatible gases. FM models: air and compatible combustible gases
  • Wetted Materials: Consult Factory
  • Accuracy: ±0.5% F.S., 60 to 78°F (15.6 to 25.6°C); ±1.5% F.S. 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
  • Response Time: 1 second
  • Resolution: See catalog page
  • Power Requirements: 9 V alkaline battery, installed non-functional, user replaceable
  • Weight: 10.2 oz (289 g)
  • 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 477-7-FM & 477-8-FM only
  • Agency Approvals: CE, FM




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