The MODEL 473B 100 mm Vane Thermo-Anemometer Test Instrument is a versatile unit that quickly and easily measures air velocity or volumetric air flow, as well as air temperature and humidity in imperial or metric units. A stainless steel 100 mm vane probe is included, which has a comfortable hａnd grip. The extruded aluminum housing fully protects electronics, yet is lightweight and comfortable to hold.

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 99% RH.

Accuracy:Air 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 99% RH].

Response Time:Air Velocity: 1 s; Volumetric Air Flow: 1 s; Temperature: 1.5 s; Relative Humidity: 1.5 s.

Probe Length:8" (203 mm) insertion.

Cable Length:28" (71 cm) retracted; 6' (183 cm) extended.

Vane Material:Anodized aluminum.

Power Requirements:9 V alkaline battery, installed non-functional, user replaceable.

Weight:18.4 oz (521 g).

Agency Approvals:CE.