Series 477-XXXT-AV Air Velocity Kit

Brand: Dwyer Instruments, LLC

Convenient all-in-one SERIES 475-AV & 477-AV KITS that are small, light and easy to use. No set-up or leveling needed. An indispensable test kit for the plant engineer, and HVac technician that must balance system air flows at start-up. 

THE SERIES 477-XXXT-AV KIT incudes: 
  • Series 477AV digital manometer (±0.5% Full Scale accuracy, calculates air velocity or volumetric air flow, stores up to 40 readings in memory, instantly selecting up to nine English/Metric pressure units, large, backlit 0.4" LCD readout, both audible and visual overpressure alarms and a "low battery" warning are standard features)
  • Model 166T, 36" telescoping SS pitot tube, fully adjustable from 11.5" to 36" (29.2 to 91.4 cm)
  • Two no. A-303 static pressure tips with magnetic mounting
  • Two 4-1/2' L 3/16" ID rubber tubing
  • No. A-397 step drill for 3/16"-1/2" holes in 1/16˝ increments
  • No. A-532 AV slide chart
  • 9 V alkaline battery
  • Fitted polyethylene case



  • Static Pressure Tips


  • ± 0.5 % of Full Scale


  • Backlit 0.4” LCD

Enclosure, Body Material

  • Polyethylene


  • 4-1/2'

Materials of Construction

  • 316 Stainless Steel


  • Magnetic Mounting

Power Requirement

  • 9 V Alkaline Battery

Tube Connection

  • 3/16” Tube

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