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Sensor Type
Temperature / Freeze
Tool Type
Temperature Measurement
Infrared (IR)
Auto-Shut Off
Battery Operated
LCD Display
Ease of Installation
Beginner (Installs < 10 minutes)
Extech Instruments
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Large Display of Airflow or Air Velocity with Built-in IR Thermometer
Extech Instruments AN200 CFM/CMM Mini Thermo-Anemometer with built-in InfaRed Thermometer
Extech Instruments AN200 CFM/CMM Mini Thermo-Anemometer with built-in InfaRed Thermometer
Extech Instruments AN200 CFM/CMM Mini Thermo-Anemometer with built-in InfaRed Thermometer
Item# 90253
Price: Normally $219.99 
Hot Deal $199.96
Free shipping on orders over $175 - See Details


  • CFM/CMM Thermo- Anemometer with built-in non-contact IR Thermometer measures remote surface temperatures to 500°F (260°C) with 8:1 distance to spot ratio and Laser Pointer
  • Simultaneous display of Air Flow or Air Velocity plus Ambient Temperature
  • Easy to set Area dimensions (cm2) are stored in the meter’s internal memory for the next power on
  • Resolution of 0.01m/sec
  • 20 point average for Air Flow
  • Super large (9999 count) LCD Backlit Display
  • 3% velocity accuracy via low friction 2.83"D (72mm) ball bearing vane wheel on 3.9ft (120cm) cable
  • Complete with vane sensor with 3.9ft (120cm) cable, 9V battery, and protective rubber holster

Essential Info

This instrument measures Air Velocity, Air Flow (volume), Air Temperature (with probe) and Surface Temperature (with the InfraRed function). The large, easy-to-read backlit LCD includes primary and secondary displays plus numerous status indicators. The InfraRed feature includes a laser pointer for convenient targeting.
In addition, the meter can store 16 area setting dimension for easy recall. Proper use of this meter will provide years of reliable service.

This tool does an excellent nice job in calculating the CFM based on the measured duct opening. It reads the airspeed then uses the duct dimensions to display CFM. As a bonus it does IR temperature readings as well. Easy to use with a big bright display that is backlit at the touch of a button. It includes a very nice case that also holds the instruction book.


More Info

  • HVAC installation, repair, diagnostics, and optimization.
  • Fume hood testing, installation, and verification
  • Ventilation system installation, servicing, and analysis
  • Environmental wind and temperature testing/analysis
  • Boiler rooms
  • Ionizer flow output monitoring
  • Automobile aerodynamic testing
  • Plant/Facilities Maintenance

  • Specifications

    Dimensions/Weight: 7 x 2.9 x 1.3" (178 x 74 x 33mm)/1.6lbs (700g)
    Circuit: Custom LSI microprocessor circuit
    Display: Dual function 0.5" (13 mm) 4-digit LCD
    Sampling rate: 1 reading per second approx.
    Sensors: Air velocity/flow sensor: Conventional angled vane arms with low-friction ball bearing.; Temperature sensors: NTC-type precision thermistor and InfraRed
    IR Spectral response: 6 to 14µm
    IR Emissivity: 0.95 fixed
    IR distance ratio: 8:1
    IR sampling rate: 2.5 readings per second approx.
    Automatic Power off: Auto shut off after 20 minutes to preserve battery life
    Operating Temperature: 32°F to 122°F (0°C to 50°C)
    Storage Temperature: 14 to 140oF (-10 to 60oC)
    Operating Humidity: <80% RH
    Storage Humidity: <80% RH
    Operating Altitude: 2000 meters (7000ft) maximum
    Battery: One 9 volt (NEDA 1604) battery
    Battery life: 80 hours approx. (if Backlight and Laser are used continuously the battery life is reduced to 2 to 3 hours approx.)
    Battery current: 8.3 mA DC approx.
    Sensor Head: 2.75" (70mm) Diameter
    Important notes:
    Only defective exchanges for identical item within 30 days of purchase. No other returns allowed on this item. For defective returns after 30 days, please contact the manufacturer.
    Manufacturer contact information: Extech Instruments Corp, Tel: (781) 890-7440 Ext 200


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