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Extech EN100 11-Function Environmental Meter

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EN100
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One of the most comprehensive tools on the market today for measuring environmental conditions, Extech's EN100 can carry out a total of 11 different functions, is portable, lightweight and simple to use and is suited for use by any environmental professional.

Suitable for use both indoors and outdoors, the EN100 is capable of measuring air velocity, air flow, temperature, humidity, wet bulb, dew point, heat index, wind chill, barometric pressure, altitude and has a built-in light sensor for quantifying the level of light within an area.

All the sensors used for measurements are integrated directly into the meter, although it is possible to buy an EN100-TP probe (sold separately) to allow external temperature measurements to take place.

Want even more from this meter? An upgraded version of this tester known as the EN150 also exists and includes the ability to measure UV light (sunlight) levels.

Extech EN100 11-Function Environmental Meter Key Features

  • Measurements of air velocity, air flow, temperature, humidity, wet bulb, dew point, heat index, wind chill, barometric pressure, altitude and light levels
  • Field-replaceable low friction vane wheel improves air velocity accuracy
  • Backlit LCD display (with auto off after 5 seconds)
  • Portable, lightweight design with integrated sensors
  • Data hold freezes displayed reading
  • Auto power off (with disable)

What's Included?

  • Extech EN100 11-Function Environmental Meter
  • Wrist Strap
  • CR2032 Battery
Accessories related to this product:
Part CodeEN100

Extech EN100 Technical Specifications

Specifications Range Max Resolution Basic Accuracy
Light Level      
Foot Candles  0 to 1860Fc  0.1Fc ±5%
Lux  0 to 20000Lux  1Lux ±5%
Air Velocity      
 ft/min (feet per minute)   80 to 3940ft/min   1ft/min ±3% FS
 m/s (meters per second)  0.4 to 20m/s 0.1m/s ±3% FS
 km/h (kilometers per hour)  1.4 to 72km/h 0.1km/h ±3% FS
MPH (miles per hour) 0.9 to 45MPH 0.1MPH ±3% FS
 Knots (nautical miles per hour)  0.8 to 38.8 knots 0.1 knots ±3% FS
Air Volume      
CFM  0.847 to 1,271, 300CFM  0.001CFM  
CMM 0.024 to 36000CMM 0.001CMM  
 Temperature (with optional probe)  14 to 212°F (-10 to 100°C) 0.1°F/°C ±2.5°F/±1.2°C
Temperature (ambient) 32 to 122°F (0 to 50°C) 0.1°F/°C ±2.5°F/±1.2°C
% Relative Humidity 10 to 95% RH 0.1%RH  ±4% RH of reading 
Wet Bulb  22.3 to 120.2°F (-5.4 to 49.0°C) 
0.1°F/°C Calculated
Dew Point  -13.5 to 120.2°F (-25.3 to 49.0°C) 
0.1°F/°C Calculated
Wind Chill 15.1 to 111.6°F (-9.4 to 44.2°C) 0.1°F/°C ±3.6°F/±2°C
Heat Index 32 to 212°F (0 to 100°C) 0.1°F/°C ±3.6°F/±2°C
Barometric Pressure      
inHg 0.29 to 32.48inHg 0.01inHg ±0.05inHg
mmHg 7.5 to 825mmHg 0.1mmHg ±1.2mmHg
hPa 10 to 1100hPa 0.1hPa ±2hPa
Altitude      
Feet (ft) -6000 to 30000ft 1ft ±50ft
Meters (m) -2000 to 9000m 1m ±15m
Dimensions   4.7 x 1.7 x 0.7" (120 x 45 x 20mm); Vane: 1.2" (31mm) 
Weight 5.6oz (160g)
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