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Mini Thermo-Anemometer with Humidity

Extech 45158

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The Extech 45158 is a waterproof, pocket sized Thermo-Anemometer for air velocity, temperature, and wind chill measurements. Simultaneously display air velocity and temperature or wind chill on the LCD screen. It features selectable averaging functions of 5, 10, or 13 second intervals, as well as data hold and auto power off functions. The fold up, protective housing extends to 229 mm (9 in) for a better reach. The 45158 is tripod mountable and comes with a battery and 109.2 cm (43 in) lanyard.

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General Specifications
Air Velocity (ft/min)
216 to 3936 ft/min
Air Velocity (ft/min) Basic Accuracy
±(3% of reading + 40 ft/min)
Air Velocity (ft/min) Max Resolution
20 ft/min
Air Velocity (km/h)
4.0 to 72.0 km/h
Air Velocity (km/h) Basic Accuracy
±(3% of reading + 1.4 km/h)
Air Velocity (km/h) Max Resolution
0.7 km/h
Air Velocity (knots)
2.1 to 38.9 knots
Air Velocity (knots) Basic Accuracy
±(3% of reading + 0.6 knots)
Air Velocity (knots) Max Resolution
0.3 knots
Air Velocity (m/s)
1.1 to 20 m/s
Air Velocity (m/s) Basic Accuracy
±(3% of reading + 0.2 m/s)
Air Velocity (m/s) Max Resolution
0.1 m/s
Air Velocity (mph)
2.5 to 44.7 mph
Air Velocity (mph) Basic Accuracy
±(3% of reading + 0.4 mph)
Air Velocity (mph) Max Resolution
0.2 mph
Beaufort Wind Force
1 to 8 BF
Beaufort Wind Force Basic Accuracy
±1 BF
Beaufort Wind Force Max Resolution
1 BF
Dew Point
32 °F to 122 °F (0 to 50 °C)
Dew Point Basic Accuracy
±3.6 °F/ ±2 °C
Dew Point Max Resolution
0.1 °F/ °C
Relative Humidity
10% to 95%
Relative Humidity Basic Accuracy
Relative Humidity Max Resolution
Temperature (Air)
0 to 122 °F (-18 to 50 °C)
Temperature (Air) Basic Accuracy
±1.8 °F/ ±1 °C
Temperature (Air) Max Resolution
0.1 °F/ °C
Additional Details
5.25 × 2.75 × 0.75" (133 × 70 × 19mm)
Segment LCD
1 × CR2032 (3V) battery
1" (24mm) diameter
2 years
3oz (95g)
Related Documents
Export Restrictions

Export Restrictions

The information contained in this page pertains to products that may be subject to the International Traffic in Arms Regulations (ITAR) (22 C.F.R. Sections 120-130) or the Export Administration Regulations (EAR) (15 C.F.R. Sections 730-774) depending upon specifications for the final product; jurisdiction and classification will be provided upon request.

Extech 45158