Product Description
Air Velocity Measurement Kit with Digital Manometer – Model 477-000T-AV
The Model 477-000T-AV Air Velocity Kit is an all-in-one solution for HVAC and industrial airflow diagnostics, combining a handheld digital manometer with a telescoping stainless-steel Pitot tube for fast, accurate duct balancing and system commissioning.
With a measurement range of 0–20" w.c., ±0.5% full-scale accuracy, onboard memory for 40 readings, and selectable pressure, flow, and velocity units, this kit is built for technicians who need portable, repeatable airflow data in the field.
Audible and visual over-pressure alarms, low-battery warnings, and a bright backlit LCD make the system dependable in mechanical rooms, rooftops, and low-light environments.
Airflow Range, Accuracy & Core Components
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Pressure Range: 0–20" w.c.
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Accuracy: ±0.5% F.S. (60–78°F)
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Selectable Units: Pressure, flow, velocity (English & metric)
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Memory: Stores up to 40 readings
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Overpressure Alarms: Audible & visual
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Low Battery Indicator: Yes
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Display: 4-digit, 0.42" backlit LCD
Complete Air Velocity Kit Includes
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Series 477AV Handheld Digital Manometer
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Model 166T Telescoping Stainless Steel Pitot Tube
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Two A303 Static Pressure Tips with Magnetic Mounting
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Two 4.5-ft rubber tubing sections
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A-397 Step Drill
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A-532 AV Slide Chart
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9V Alkaline Battery
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Fitted Polyethylene Carrying Case
HVAC & Industrial Applications
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Duct airflow measurement
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Static pressure testing
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Filter pressure drop monitoring
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Coil diagnostics
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System balancing
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Plant airflow surveys
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Industrial ventilation checks
Why Choose the 477-000T-AV Air Velocity Kit?
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All-in-one airflow solution for field technicians
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Pitot tube system enables precise duct velocity readings
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Digital manometer accuracy supports commissioning reports
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Data storage simplifies documentation
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Portable carrying case for jobsite transport
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Overpressure protection protects instrumentation
Technical Specifications (Manometer)
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Service: Air & compatible combustible gases
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Operating Temp: 0–140°F
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Compensated Range: 32–104°F
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Storage Temp: -4–176°F
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Accuracy: ±0.5% F.S.; ±1.5% outside nominal range
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Pressure Hysteresis: ±0.1% F.S.
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Power: 9V alkaline battery
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Agency Approvals: CE
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Process Connections: Barbed + compression fittings (model-dependent)
Shipping Information
Ships in 1–2 business days, subject to availability.
