Product Description
Air Velocity Measurement Kit with Digital Manometer – Model 475-1T-FM-AV
The Model 475-1T-FM-AV Air Velocity Kit delivers a complete, field-ready solution for HVAC diagnostics, combustion-system monitoring, and airflow verification. Combining a handheld digital manometer with a telescoping 36-inch stainless-steel Pitot tube, this kit enables accurate duct traverses, static-pressure testing, and instrument calibration in industrial and commercial environments.
With a measurement range of 0–20.00" w.c., ±0.5% full-scale accuracy, fine 0.01-inch resolution, and FM-approved electronics, the 475-1T-FM-AV is built for technicians who need dependable airflow data in mechanical rooms and plant settings.
Airflow Range, Accuracy & Core Components
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Pressure Range: 0–20.00" w.c.
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Accuracy: ±0.5% F.S. (60–78°F)
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Resolution: 0.01" w.c.
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Selectable Units: English & metric
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Over-Range Protection: Audible / visual indicators
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Display: 4-digit backlit LCD, 0.42"
Complete Kit Includes
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Handheld Digital Manometer
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Model 166T Telescoping Stainless-Steel Pitot Tube
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(2) Static Pressure Tips with Magnetic Mounting
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(2) 4.5-ft Rubber Tubing Sections
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Step Drill
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AV Slide Chart
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9V Alkaline Battery
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Fitted Polyethylene Carrying Case
HVAC & Combustion Applications
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Natural-gas boiler pressure monitoring
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HVAC system diagnostics
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Duct airflow measurement
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Instrument field calibration
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Static-pressure troubleshooting
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Plant ventilation testing
Why Choose the 475-1T-FM-AV Air Velocity Kit?
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All-in-one airflow solution for technicians
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FM-approved manometer for hazardous areas
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Fine-resolution measurement improves balancing accuracy
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Telescoping Pitot tube reaches deep duct runs
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Portable carrying case for jobsite mobility
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Calibration-ready for verification workflows
Technical Specifications
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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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Pressure Hysteresis: ±0.1% F.S.
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Power: 9V alkaline battery
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Weight: 64 oz
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Agency Approvals: CE, FM (manometer)
Shipping Information
Ships in 1–2 business days, subject to availability.
