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The Extech EN300 Environmental Meter has a Large dual LCD simultaneous display of Temperature and Air Velocity or Relative Humidity. Characters on the display reverse direction depending on Hygro-Thermo-Anemometer or Light-Sound Mode. The EN300 has a built-in low friction vane wheel that improves accuracy of air velocity in ft/min, MPH, m/s, km/h, and Knots. It also has a built-in precision thin-film capacitance humidity sensor for fast response and thermistor for ambient temperature measurements.
Features:
Data Hold to freeze the displayed value
Records Min/Max readings
Type K input measures temperature to 2372° (1300°C)
Utilizes precision photo diode and correction filter for Cosine and color corrected light measurements
Sound Level measurement meets IEC 61672 class 2 using A frequency weighting and fast response time
Defaults to last function when powered off
Auto power off 10 minutes after last key is pressed with disable feature
Low Battery and over range indication.
Sound Level:
Microphone: ½” Electret condenser microphone
Measurement Range 35 to 130 dB, Auto range
Resolution 0.1dB
Frequency response 31.5Hz to 8,000Hz
Weighting " A " frequency weighting network
Time Response "Fast"
Accuracy
Meets IEC 61672 class 2, A weight, Fast response
Note: Stated specification tests under the environment RF Field Strength less than 3 V/M & frequency less than 30 MHz only
Note: Specification stated for 23± 5°C
Anemometer:
Units
| Range
| Res.
| Accuracy
|
ft/min
| 80 to 5910ft/min
| 1
| ≤3900ft/min: ± 3% F.S., >3900ft/min:± 4% F.S.
|
m/s
| 0.4 to 30.0m/s
| 0.1
| ≤20m/s : ± 3% F.S., > 20m/s : ± 4% F.S.
|
km/h
| 1.4 to 108.0km/h
| 0.1
| ≤72km/h: ± 3% F.S., >72km/h:± 4% F.S.
|
MPH
| 0.9 to 67.0mile/h
| 0.1
| ≤45mile/h: ± 3% F.S.,>45mile/h:± 4% F.S
|
knots
| 0.8 to 58.3 knots
| 0.1
| ≤39 knots: ± 3% F.S.,>39 knots:± 4% F.S.
|
°F
| 32 to 122°F
| 0.1
| ± 2.5°F
|
°C
| 0 to 50°C
| 0.1
| ± 1.2°C
|
K Type Thermometer:
Units
| Range
| Res.
| Accuracy
|
ft/min
| 80 to 5910ft/min
| 1
| ≤3900ft/min: ± 3% F.S., >3900ft/min:± 4% F.S.
|
m/s
| 0.4 to 30.0m/s
| 0.1
| ≤20m/s : ± 3% F.S., > 20m/s : ± 4% F.S.
|
km/h
| 1.4 to 108.0km/h
| 0.1
| ≤72km/h: ± 3% F.S., >72km/h:± 4% F.S.
|
MPH
| 0.9 to 67.0mile/h
| 0.1
| ≤45mile/h: ± 3% F.S.,>45mile/h:± 4% F.S
|
knots
| 0.8 to 58.3 knots
| 0.1
| ≤39 knots: ± 3% F.S.,>39 knots:± 4% F.S.
|
°F
| 32 to 122°F
| 0.1
| ± 2.5°F
|
°C
| 0 to 50°C
| 0.1
| ± 1.2°C
|
Hygrometer (Humidity/Temperature):
Units
| Range
| Res.
| Accuracy
|
ft/min
| 80 to 5910ft/min
| 1
| ≤3900ft/min: ± 3% F.S., >3900ft/min:± 4% F.S.
|
m/s
| 0.4 to 30.0m/s
| 0.1
| ≤20m/s : ± 3% F.S., > 20m/s : ± 4% F.S.
|
km/h
| 1.4 to 108.0km/h
| 0.1
| ≤72km/h: ± 3% F.S., >72km/h:± 4% F.S.
|
MPH
| 0.9 to 67.0mile/h
| 0.1
| ≤45mile/h: ± 3% F.S.,>45mile/h:± 4% F.S
|
knots
| 0.8 to 58.3 knots
| 0.1
| ≤39 knots: ± 3% F.S.,>39 knots:± 4% F.S.
|
°F
| 32 to 122°F
| 0.1
| ± 2.5°F
|
°C
| 0 to 50°C
| 0.1
| ± 1.2°C
|
Light:
Units
| Range
| Res.
| Accuracy
|
ft/min
| 80 to 5910ft/min
| 1
| ≤3900ft/min: ± 3% F.S., >3900ft/min:± 4% F.S.
|
m/s
| 0.4 to 30.0m/s
| 0.1
| ≤20m/s : ± 3% F.S., > 20m/s : ± 4% F.S.
|
km/h
| 1.4 to 108.0km/h
| 0.1
| ≤72km/h: ± 3% F.S., >72km/h:± 4% F.S.
|
MPH
| 0.9 to 67.0mile/h
| 0.1
| ≤45mile/h: ± 3% F.S.,>45mile/h:± 4% F.S
|
knots
| 0.8 to 58.3 knots
| 0.1
| ≤39 knots: ± 3% F.S.,>39 knots:± 4% F.S.
|
°F
| 32 to 122°F
| 0.1
| ± 2.5°F
|
°C
| 0 to 50°C
| 0.1
| ± 1.2°C |
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