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Handheld Digital Manometer

Series 477A

The Popular Series 477 is now available with 0.1% full scale accuracy in the new Series 477A. The 477A contains a highly accurate differential pressure sensor that offers a 0.1% full scale accuracy on air ranges from 20" w.c. to 100 psid. Series 477A Handheld Digital Manometers are packed with features needed to make pressure measurements and recording faster, easier and more accurate than ever. Instantly select from up to nine of the most widely used pressure units without having to waste time and risk mistakes with tedious conversions. A non-volatile memory function enables storage of up to 40 readings - perfect for HVAC technicians making Pitot tube traverses of air flow readings across a duct. The 477A is also ideal for maintenance personnel or technicians that require a highly accurate standard to check their instrumentation or equipment to ensure proper performance.

  • Service: Air and non-combustible compatible gases
  • Wetted Materials: Consult factory
  • Accuracy: ±0.10% of full scale from 60 to 78°F (15.6 to 25.6°C); ±1% of full scale from 32 to 60 and 78 to 104°F (0 to 15.6 and 25.6 to 40°C)
  • Pressure Hysteresis: ±0.1% of full scale
  • Pressure Limits: See Ordering page
  • 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
  • Resolution: See Ordering 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 for 477A-1, 477A-2, 477A-3, 477A-4 and 477A-5 only. Two compression fittings for use with 1/8" (3.18 mm) I.D. x 1/4" (6.35 mm) O.D. tubing for 477A-6 and 477A-7 only.

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