Extech CMM/CFM Anemometer/Psychrometer Datalogger

Extech CMM/CFM Anemometer/Psychrometer Datalogger


The CMM/CFM Anemometer/Psychrometer Datalogger measures air velocity/volume, temperature, humidity, wet bulb, and dew point.


  • Telescoping probe with 18mm diameter
  • Store up to 12,000 readings for data analysis
  • Built-in PC interface
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The Extech AN340 features a telescoping probe with 18mm diameter vane sensor easily fi ts into air vents and can extend length of probe to 3.3ft (1m) long. It measures air  velocity/volume, temperature, humidity, wet bulb, and dew point. Users can store up to 12000 readings with 12/24 hour time and date stamp for data analysis.

Select data sampling range from 1 second to 4 hours: 59 minutes: 59 seconds. Useful features include min/max/avg readings, data hold, and auto power off with disable. This is a great tool for HVAC with small ducts and vents, manufacturing, engineering, appliance testing, and research and design applications.

Notable Specifications:
  • m/s Range: 0.5 to 20m/s
  • m/s Basic accurary: ±3%
  • ft/min Range: 100 to 3940ft/min
  • ft/min Basic accuracy: ±3%
  • Temperature range: -4 to 140°F (-20 to 60°C)
  • Temperature basic accuracy: ±1.1°F (0.6°C)
  • Humidity range: 0.1 to 99.9%RH
  • Humidity basic accuracy: ±3%RH
  • Wet bulb range: -4 to 140°F (-20 to 60°C)
  • Dew poinst range: -4 to 140°F (-20 to 60°C)
  • CFM/CMM range: 0 to 99999
  • Dimensions/weight: 6.7x3x1.7” (169x78.3x44.4mm) / 7.4oz (210g)
What's Included:
  • (1) Meter
  • (1) External mini vane probe
  • (1) Windows compatible software
  • (1) USB cable
  • (6) AAA batteries
  • (1) Hard carrying case
Image Part # Product Description Price Stock Order
Extech CMM/CFM Anemometer/Psychrometer Datalogger AN340 CMM/CFM anemometer/ psychrometer datalogger
Usually ships in 1-2 weeks
Extech CMM/CFM Anemometer/Psychrometer Datalogger AN340-NIST CMM/CFM anemometer/ psychrometer datalogger, NIST traceable
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