Extech 45170: 4-in-1 Hygro-Thermo-Anemometer-Light Meter

Extech 45170: 4-in-1 Hygro-Thermo-Anemometer-Light Meter

Extech 45170: 4-in-1 Hygro-Thermo-Anemometer-Light Meter

The Extech 45170 is a compact, pocket-sized 4-in-1 environmental meter that combines the functionality of a hygrometer, thermometer, anemometer, and light meter into a single ergonomic device. It is designed for fast and accurate environmental measurements in the field, making it ideal for HVAC technicians, facility inspectors, and environmental engineers.

This meter features a large dual LCD that can simultaneously display temperature and air velocity or relative humidity, with an auto-reversing character display depending on the mode (Hygro-Thermo-Anemometer or Light Meter). It also includes data hold, Min/Max memory, and auto power off functions.

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Key Features Extech 45170: 4-in-1 Hygro-Thermo-Anemometer-Light Meter

• 4-in-1 functionality: Measures Air Velocity, Temperature, Relative Humidity, and Light Levels

• Ergonomic and pocket-sized design for easy portability

• Dual LCD shows both temperature and air velocity or humidity simultaneously

• Auto-reversing display depending on measurement mode

• Data Hold function to freeze real-time readings

• Min/Max memory for tracking extreme readings

• Built-in low-friction vane wheel for accurate air velocity readings in ft/min, MPH, m/s, km/h, and Knots

• Precision thin-film capacitance humidity sensor for fast response

• Thermistor for accurate ambient temperature readings

• Accepts Type K thermocouples for high-temperature measurements up to 2372°F (1300°C)

• Photo diode with color correction filter for accurate light measurements (cosine and color corrected)

• Auto power off, low battery indication, and overrange alerts

• Includes built-in sensors (humidity, light, and vane), wrist strap, and 9V battery

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Specifications

• Air Velocity:

  • Range: 80 to 5910 ft/min (0.4 to 30 m/s, 1.4 to 108 km/h, 0.9 to 67 MPH, 0.8 to 58.3 knots)

  • Resolution: 10 ft/min or 0.1 depending on unit

  • Accuracy: ±3% Full Scale

• Light Measurement:

  • Range: 0 to 1860 Fc / 0 to 20,000 Lux

  • Resolution: 0.1 Fc / 1 Lux

  • Accuracy: ±(5% of reading + 8 digits)

• Relative Humidity:

  • Range: 10 to 95% RH

  • Resolution: 0.1% RH

  • Accuracy: ±4% of reading

• Temperature (Thermistor):

  • Range: 32 to 122°F (0 to 50°C)

  • Resolution: 0.1°

  • Accuracy: ±2.5°F (±1.2°C)

• Temperature (Type K Thermocouple):

  • Range: -148°F to 2372°F (-100°C to 1300°C)

  • Resolution: 0.1°

  • Accuracy: ±(1% + 2°F) / ±(1% + 1°C) of reading

• Physical Dimensions:

  • Meter: 6.1 x 2.4 x 1.3″ (156 x 60 x 33 mm)

  • Vane Diameter: 1.2″ (31 mm)

• Weight:

  • 5 oz (160 g)

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Summary

The Extech 45170 is a rugged and portable 4-in-1 environmental meter that provides fast, accurate, and reliable readings of air velocity, temperature, humidity, and light levels. Ideal for indoor air quality assessments and field inspections, it offers professional-grade performance in a compact form with intuitive features such as dual LCD display, Min/Max memory, and support for high-temperature Type K measurements.