Fluke 975 AirMeter™

Fluke 975 AirMeter™ is rated 3.7 out of 5 by 3.
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  • Fluke 975 AirMeter™
  • Fluke 975 AirMeter™
  • Fluke 975 AirMeter™

Key features

The Fluke 975 offers an unparalleled featureset for HVAC and facilities technicians, helping them work more quickly and accurately, with the ease of use and durability customers expect from a Fluke meter.

Simultaneously measures, logs, and displays temperature, humidity, CO2, and CO on a bright, backlit LCD display

  • One-touch air flow and velocity with available probe*
  • Wet bulb and dew point temperature 
  • % of outside air calculation
  • CO2 and CO field calibration feature 
  • Self-test function at startup
  • Auto-backlight
  • Automatically compensates for barometric pressure changes
  • Min/Max/Average on all measured and calculated readings
  • Multi-language user interface
  • Metric or standard units
  • Audible and visual threshold alarms
  • Extensive discrete or continuous data logging capacity, downloadable to PC via USB interface
  • Keypad lock for security
  • Included FlukeView Forms® software
  • *Included with Fluke 975V, optional with Fluke 975
This product is discontinued or reclassified

Product overview: Fluke 975 AirMeter™

One Tool. Get More Done.

The Fluke 975 AirMeter test tool raises indoor air monitoring to the next level by combining five powerful tools in one, rugged and easy-to-use handheld device. Use the Fluke 975 to optimize HVAC ventilation settings for ASHRAE 62 recommendations, actively monitor conditions that promote a productive environment, and quickly and accurately address occupant comfort complaints the first time.

The Fluke 975 measures:

  • Temperature
  • Velocity
  • Humidity
  • CO2
  • CO

Use the Fluke 975 AirMeter test tool to:

  • Respond to comfort-related calls from occupants.
  • Verify the operation of building HVAC control systems.
  • Determine whether adequate ventilation exists.
  • Monitor air flow and velocity.
  • Test for dangerous carbon monoxide leaks.
  • Perform duct traversals.
  • Optimize HVAC systems to manage energy costs

Specifications: Fluke 975 AirMeter™

Measured Specifications
TemperatureRange-20°C to 50°C (-5°F to 122°F)
Display resolution0.1°C (0.1°F)
Accuracy±0.9°C / ±1.62°F from 40°C to 60°C
±0.5°C / ±1.00°F from 5°C to 40°C
±1.1°C / ±1.98°F from -20°C to 5°C
Relative humidityRange10% to 90% RH, non-condensing
Display resolution1%
Accuracy±2% RH (10% RH to 90% RH)
Air velocityRange50.0 fpm to 3000 fpm
0.25 m/sec to 15 m/sec
Display resolution1 fpm (0.005 m/sec)
Accuracy±4% or 4 fpm1
±4% or 0.02 m/sec1 whichever is greater
1. Accuracy specification only valid for velocity readings above 50 fpm.
C0Range0 to 500 ppm
Display resolution1 ppm
Accuracy±5% or ±3 ppm, whichever is greater, @ 20°C and
50% RH
C02Range0 to 5000 ppm
Display resolution
1 ppm
AccuracyWarm up time 1 min (5 minutes for full specification) 2.75% + 75 ppm
Calculated Specifications
Dew point temperatureRange-44°C to 50°C, (-47°F to 122°F)
Display resolution0.1°C (0.1°F)
Accuracy±1°C when temp: -20°C to 50°C RH: 40% to 90%
±2°C when temp: -20°C to 50°C RH: 20% to 40%
±4°C when RH: 10% to 20%
Wet bulb temperatureRange-16°C to 50°C, (3°F to 122°F)
Display resolution0.1°C, (0.1°F)
Accuracy±1.2°C when RH: 20% to 90% temp: -20°C to 60°C
±2.1°C when RH: 10% to 20%
Volume flow rate (in a duct)Range0 to 3,965 M3/m, (0 to 140,000 cfm)
Display resolution0.001 M3/min, (1 cfm)
AccuracyN/A: The volume flow calculation will be a simple average of the data points times the duct area
% outside air (based on temperature)Range0 to 100%
Display resolution0.1
% outside air (based on CO2)Range0 to 100%
Display resolution0.1% N/A
General Specifications
Operating and storage temperature-20°C to 50°C (-4°F to 122°F)
Humidity10% to 90% (non-condensing)
AltitudeUp to 2000 m (6562 ft)
Shock and vibrationMIL-PRF-28800F: Class 2
Multi-language interfaceEnglish, French, Spanish, Portuguese and German
BatteryRechargeable Li-Ion (primary), three-AA (backup)
Data logging25,000 records (continuous), 99 records (discrete)

Models: Fluke 975 AirMeter™

Fluke 975
Fluke 975 AirMeterTM
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Rated 2 out of 5 by from Deg-F Readings Have Significant Rounding Error The temperature measurements from the 975 are fine if working in Celsius but if reading in Fahrenheit then there is a documented limitation in the firmware for the 975 that is worth knowing about. The 975 measures with 0.1 degree Kelvin accuracy but then this reading is stored as an integer instead of floating point value and there is then a rounding error introduced when converting to deg-F. Within the range of typical HVAC applications, know that you may have about a 0.5 deg-F error in the displayed reading if using Fahrenheit because instead of multiplying by 1.8 (formula is DegF = DegK - 273.15) x 1.8 + 32) the 975 divides by 5, rounds this off, then multiplies by 9 and rounds off again. So, a reading that should be 80.33 degF with floating point (e.g. accurate) math is 79.7 degF using integer math. After taking exception to the Fahrenheit readings from our 975 over a number of years I brought this issue to Fluke's attention. Unfortunately there doesn't seem to be a fix and it was suggested to use the Celsius readings for better accuracy (since there is no 1.8 multiplier that leads to the lack of accuracy).
Date published: 2019-07-08
Rated 5 out of 5 by from Easy to use and realiable The whole process was awesome from research product information on the website to working with the sales staff to order just what we needed. We got our product in just a couple of days. It started paying for itself right out of the box by allowing us to start doing our own in-house testing. The money we save by testing in-house for IAQ we can use to buy other test equipment.
Date published: 2016-12-07
Rated 4 out of 5 by from good product the only hatch is, not compatible with os x. quick and detailed info
Date published: 2012-05-30
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