The Dwyer 473B-1 vane thermo-anemometer is a handheld unit that can measure air velocity or volumetric flow, air temperature and humidity using a stainless steel 100mm vane probe (included). The 8" probe is paired with a 28" retracted cable that can be extended up to 6-feet in length. Designed for use with clean, dry air the Dwyer 473B-1 is an ideal solution for residential balancing and HVAC inspections.
The 473B-1 can measure process temperatures between -20 to 212°F and from 0 to 100% relative humidity. Additionally, air velocity can be measured from 40 to 5000 fpm and volumetric air flow up to 19,999 in selected flow units. Using a 4.5 digit backlit display, this Dwyer vane thermo-anemometer clearly displays data for real-time readings and can also store up to 99 readings for later evaluation.
For air velocity, volume and temperature measurements of clean, dry air
Range: Air Velocity: 40 to 5000 fpm (0.2 to 25 m/s); Volumetric Air Flow: 19,999 in selected flow units; Temperature: -20 to 212°F (-29 to 100°C); Relative Humidity: 0 to 100% RH
8 in. (203mm) probe length
28 in. cable length when retracted and 6 ft. when extended
4.5 digit backlit display
Stores up to 99 readings for later evaluation
9 V alkaline battery
Service: Dry, clean air.
Temperature Limits: Process: -20 to 212°F (-29 to 100°C); Ambient: 5 to 125°F (-15 to 51°C).
Display: 4.5 digit backlit display.
Range: Air Velocity: 40 to 5000 fpm (0.2 to 25 m/s); Volumetric Air Flow: 19,999 in selected flow units; Temperature: -20 to 212°F (-29 to 100°C); Relative Humidity: 0 to 100% RH.
AccuracyAir Velocity: ±1.5% of reading ±20 fpm (±0.1 m/s) [0.25 to 10 m/s]; ±1.5% of reading ±40 fpm (±0.2 m/s) [10 to 20 m/s]; ±1.5% of reading ±60 fpm (±0.3 m/s) [20 to 25 m/s]; Temperature: ±0.54°F @ 77°F (±0.3°C @ 25°C); Relative Humidity: ±2% @ 77°F (25°C) [10 to 90% RH]; ±4% [0 to 10, 90 to 100% RH].
Response Time: Air Velocity: 1 s; Volumetric Air Flow: 1 s; Temperature: 1.5 s; Relative Humidity: 1.5 s.