EXTECH EN300 5-in-1 Environmental Meter

EXTECH EN300 5-in-1 Environmental Meter

Extech EN300: Hygro-Thermo-Anemometer-Light-Sound Meter (5-in-1 Environmental Meter)

The Extech EN300 is a rugged and compact 5-in-1 environmental meter designed for comprehensive environmental monitoring. It integrates air velocity, temperature, humidity, light, and sound measurements in a single handheld device, making it ideal for indoor air quality assessment, HVAC diagnostics, industrial hygiene, and field inspections.

Equipped with a low-friction vane wheel for accurate airspeed readings, a precision thin-film capacitance humidity sensor for fast humidity response, and a thermistor and Type K thermocouple input for wide-range temperature measurement, the EN300 delivers reliable, real-time data. The built-in photo diode with cosine and color correction filter ensures accurate light measurements, while the sound level meter meets IEC 61672 Class 2 standards using A-weighting and fast response.

The device features a large dual LCD display, data hold, Min/Max recording, and auto power off. The PC interface (RS-232) allows easy data transfer and analysis.

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Key Features EXTECH EN300 5-in-1 Environmental Meter

• Rugged 5-in-1 environmental meter with tripod mount and RS-232 PC interface

• Measures air velocity, ambient temperature, relative humidity, light level, and sound level

• Dual large LCD display shows temperature and airspeed or relative humidity simultaneously

• Screen orientation automatically adjusts based on mode (Hygro-Thermo-Anemometer or Light-Sound)

• Low-friction vane wheel for accurate airspeed in ft/min, MPH, m/s, km/h, and knots

• Built-in precision thin-film capacitance sensor for fast humidity response

• Integrated thermistor for ambient temperature and Type K thermocouple input for high-temperature readings up to 2372°F (1300°C)

• Photo diode sensor with cosine and color correction for accurate light measurement

• Class 2 sound level meter with A-weighting and fast response meets IEC 61672 standards

• Features Data Hold, Min/Max recording, Auto Power Off, low battery/overrange indication

• Complete with Type K probe, pouch case, and 6 x AAA 1.5V batteries

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Specifications

• Air Velocity:

  • ft/min: 80 to 5910 (resolution: 1)

  • m/s: 0.4 to 30 (resolution: 0.1)

  • km/h: 1.4 to 108.0 (resolution: 0.1)

  • MPH: 0.9 to 67.0 (resolution: 0.1)

  • knots: 0.8 to 58.3 (resolution: 0.1)

  • Accuracy: ±3% Full Scale

• Temperature:

  • Range: 32 to 122°F / 0 to 50°C (resolution: 0.1°)

  • Accuracy: ±2.5°F / ±1.2°C

• Relative Humidity:

  • Range: 10 to 95% RH (resolution: 0.1%)

  • Accuracy: ±4% RH

• Light Level:

  • 0 to 1860 Fc (resolution: 0.1)

  • 0 to 20,000 Lux (resolution: 1)

  • Accuracy: ±5% of reading

• Sound Level:

  • Range: 35 to 130 dB (A-weighting)

  • Resolution: 0.1 dB

  • Accuracy: ±1.4 dB

• Power:

  • 6 x AAA (1.5V) batteries

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Summary

The Extech EN300 is an all-in-one environmental meter offering fast, accurate, and multi-parameter measurements for professionals in HVAC, IAQ, safety, and facility maintenance. With a combination of airspeed, humidity, temperature, light, and sound functions in one durable unit, the EN300 simplifies field diagnostics and environmental assessments while offering excellent portability and data logging capability.