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BTMETER

BTMETER 866A Pro Handheld HVAC Anemometer CFM Air Flow Meter(Wet Bulb Temp)

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Availability: In Stock.
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Arrives Tuesday, Oct 6
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Color: BT-100WM Anemometer


Features

  • Wind Data Sync on Computer This wind velocity meter can measure Wind Speed, wind temperature, wind flow, relative humidity(%RH) and dew point, provides Max / Min of wind velocity reading to balancing the HVAC system. Built with sensitive 8 vanes to pick up slow winds down to 0.01 resolution. Comes with a USB cable and PC software for wind data logging, analysis and monitoring.
  • High Accurate HVAC CFM MeterMeasures high Wind Velocity range 0.3~40 m/s, +/- 2.0% + 50, display in 6 units: m/s, km/h, ft/min, knots, mph, fpm; Wind Temp Range 14F~140F, +/- 2.7 F display in 2 units CF(Celsius,Fahrenheit); Air flow vlume range 0~999900 ft3/min. Smart anemometer display air flow velocity and CFM reading directly, no more manual calculation
  • USB Data LoggingWith a metal screw hole in the bottom so you can mount it on a tripod for hands-free operation. Support to connect the wind meter to computer via USB port, for monitor and record wind speeds, temperature, CFM air flow and RH, perfect for balancing air flow in HVAC tasks such as: duct vents, AC air output testing
  • Portable Anemometer Its a handheld pocket size wind speed indicator comes with protective case, Large Backlit screen, Low battery indicator and auto shut down to save the battery. Portable for indoor and outdoor wind measurements,such as: Long range shooting,Boat Sailing, Kite flying, Climbing, Drone driving,Vent, turbine air flow testing etc.
  • Tips for Wind Temp %RH Testing The temperature sensors are inside the left and right holes, to shade them from sunlight to assure the wind reading are for the air flowing through the holes. So without air flow, the temp and %RH reading WONT change rapidly, theyll change slowly.

Description

Measure with Precision We BTMETER are dedicated to designing and manufacturing high-quality instruments & devices, especially for wind meter. For every specific need, BTMETER has the answer. Our range of anemometers are designed with versatility in mind. So, whether you require one for domestic usage, for industrial application, or for measuring wind speed indoor/outdoor, you can trust that BTMETER has a device perfectly suited to your needs. Low friction bearing technology for more accurate measurement. Upgraded Version, more accurate than 1 sensor.

Brand: BTMETER


Material: Acrylonitrile Butadiene Styrene (ABS)


Item dimensions L x W x H: 3.5 x 1.5 x 6.5 inches


Item Weight: 200 g


Item Highlight: Wind Meter Gauge Measures Wind Velocity Temp %RH Dew Point with USB Sync to PC, 6 Wind Speed Units, ±2% Accuracy, LCD Backlit See more


Brand Name: BTMETER


Item Highlight: Wind Meter Gauge Measures Wind Velocity Temp %RH Dew Point with USB Sync to PC, 6 Wind Speed Units, ±2% Accuracy, LCD Backlit


Number of Items: 1


Unit Count: 1 Count


Number of Packs: 1


Part Number: Wind Gauge for HVAC CFM Calculation


Warranty Description: 1 Year


UPC: 778469100936


Manufacturer: BTMETER


Included Components: 1* Por CFM Anemometer and 1* User manual


Model: BT-866A


Material Type: Acrylonitrile Butadiene Styrene (ABS)


Item Dimensions: 3.5 x 1.5 x 6.5 inches


Item Weight: 200 g


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 6

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Great and accurate hand held air flow meter! A+A+A+A
Color: BT-100WM Anemometer
Review Image by Alexander Stanley
I specifically used this device to measure air flow from the heater vent registers in my home. Readings were very accurate an greatly assisted in determining resister issues. It is excellent that it uploads data to your computer for real-time display and recording. The carrying is also a big plus.
Reviewed in the United States on February 14, 2021 by Alexander Stanley
    • Answers to exhaust flow questions
Color: BT-100WM Anemometer
We wondered why we were seeing mildew in our bathroom. This was the measurement tool to give us the answers. It turns out that our bathroom exhaust fan woefully inadequate for pulling moisture from the shower. The same day that this meter arrived we determined a) the fan was working at the flow rate advertised and b) Amazon would sell us a replacement fan with much higher flow. Problem fixed after one more Amazon package. Note you might have to do a little cardboard, scissors, and duct tape work to match the meter to the vent. ... show more
Reviewed in the United States on April 14, 2025 by cryoAndy
    • USB connection
Color: BT-100WM Anemometer
First, the USB connection does NOT power the meter, so if you are going to do long term logging, your battery may die! WHY doesn't the USB power the meter???? What is so difficult to accomplish this? Second, from the videos I have seen and the one that I received, the fan is NOT balanced and has a heavy side. This would affect low air speed measurements! I screwed around with some weights to get the blade somewhat balanced but it is still a little off. Not worth returning because I would just get the same thing. Why is producing a balanced fan so hard???? Just shows how cheaply made this is! Also, does NOT do averaging... ONLY min/max/real time. Yet another lie in the description and functionality. Some buttons you hold for 3 second, some for 4... WHY??? Pretty poor and sloppy implementation to an otherwise fine instrument... guess you get what you paid for! A hint... check the fan's balance by holding the meter vertical, with no airflow, and see if the fan tries to swing to the heavy side. This will tell you that low speed measurements will probably be wrong. ... show more
Reviewed in the United States on April 29, 2021 by Pomonabill
    • POOR QUALITY
Color: BT-100WM Anemometer
Very bad quality. The fan blade shaft seizes off and on. When i needed it the most and the very first time using it, it failed. Ive been doing TAB for over 30years and i thought id try something new, small, compact, and quick to use instead of setting up the hood. Also so my techs can have on their tool bag to do quick cfm readings. Back to the old testers if i can find it. ... show more
Reviewed in the United States on June 16, 2026 by MANA
    • Anemometer is what it is, with temperature and %RH of flowing air
Color: BT-100WM Anemometer
For some reason I forgot it was an anemometer and that the temperature readings and %RH would change instantly moving from outside to inside with no wind (air flow) outside or inside. I put it in my refrigerator, no air flow, so the temperature readings did not change rapidly, they changed slowly. The temperature sensors are inside the tunnels (or "holes") likely to shade them from radiation (like sunlight) to assure that the readings are for the air flowing through the tunnels. The instructions are helpful, making changes quite easy. And, the software/USB worked without any issues. Time now to get to tuning my HVAC system (air-to-air heat pump with three ducted air handlers for three separate zones). Not bad for tuning the home hot yoga studio either as to desired temp and %RH (as measured at output of a fan). ... show more
Reviewed in the United States on April 7, 2020 by Algo
    • Good set of features but way out of spec on temp and humidity
Color: BT-100WM Anemometer
I wanted to make some psychrometric calculations but was sadly disappointed. Temperature was a few degrees in error but humidity was reading 17% when actual was 44-45%. I have some confidence in the numbers because I laid our three other devices, which were all of difference manufacture but all in agreement and impressively close. Perhaps they were rushing these BT units out the door and forgot to make the calibration. I had no standard for airspeed calibration to compare but after seeing these results I cannot trust any numbers that the BT66 reports. ... show more
Reviewed in the United States on December 11, 2021 by Clueless
    • Excellent tool
Color: BT-100WM Anemometer
Works as advertised. I'm using it to fine tune the dust collection in my wood shop. Technical support is responsive and very helpful.
Reviewed in the United States on September 1, 2021 by Jeff Bremer
    • Blade Broke- No Warranty Information
Color: BT-100WM Anemometer
Worked for a but then a blade broke during high wind speeds and I cannot find any warranty information.
Reviewed in the United States on February 16, 2022 by sasha

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