Fluke 971: Temperature Humidity Meter

Fluke 971 Temperature Humidity Meter is rated 3.3 out of 5 by 16.
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  • Fluke 971 Temperature Humidity Meter
  • Fluke 971 Temperature Humidity Meter
  • Fluke 971 Temperature Humidity Meter

Key features

  • Backlit dual display of humidity and temperature
  • Measures dew point and wet bulb temperatures
  • 99 record storage capacity
  • Ergonomic design with belt clip and protective holster
  • Quick-response capacitance sensor 
  • Compact and lightweight (188 g /6.6 oz)
  • Temperature range from -20 °C to 60 °C (-4 °F to 140 °F) 
  • Relative humidity from 5% to 95%
  • Min/Max/Avg Data hold
  • Low battery indicator

Product overview: Fluke 971: Temperature Humidity Meter

Maintaining optimal comfort levels and ensuring good indoor air quality are critical, necessitating precise temperature and humidity control. The Fluke 971 stands out as a premier solution, adeptly serving as both a temperature humidity meter and a dedicated humidity tester. This device is indispensable for professionals focusing on facility maintenance, utility technicians, HVAC service contractors, and indoor air quality (IAQ) specialists. Its ability to quickly and accurately measure humidity and temperature makes it a crucial tool for monitoring environments where air quality is paramount.

The Fluke 971 excels as a humidity measurement tool, offering a comprehensive approach to assessing environmental conditions. As a meter for humidity, it provides detailed insights into the moisture content of indoor environments, aiding in the prevention of mold growth and ensuring comfort. This humidity gauge integrates seamlessly into maintenance routines, offering reliable data with advanced humidity-measuring device capabilities.

The Fluke 971 is more than just a humidity reader designed for the field. It incorporates a temperature and humidity meter into a single, user-friendly device. Its lightweight design makes it exceptionally easy to carry and use over extended periods, ensuring that professionals can easily monitor problem areas. The humidity thermometer feature of the Fluke 971 allows for a dual reading of both temperature and humidity, facilitating a thorough understanding of the environmental conditions.

Built to last, the Fluke 971 features a rugged holster and a protected sensor, safeguarding the device from the rigors of daily use in challenging environments. This design ethos ensures that the Fluke 971 is a powerful tool for immediate measurements and a durable investment for future assessments.

Whether for diagnosing HVAC issues, ensuring proper air quality, or maintaining environmental conditions, the Fluke 971 Temperature Humidity Meter is essential for professionals demanding accuracy, reliability, and durability in their humidity and temperature measurement solutions.

Specifications: Fluke 971: Temperature Humidity Meter

Temperature-20°C to 60°C (-4°F to 140°F)
Temperature accuracy0°C to 45°C (±0.5°C)
-20°C to 0°C & 45°C to 60°C (±1.0°C)
32°F to 113°F (±1.0°F)
-4°F to 32°F and 113°F to 140°F (±2.0°F)
Resolution0.1°C / 0.1°F
Temperature update rate500 ms
Temperature sensor typeNTC
Relative humidity range5% to 95% RH
Relative humidity accuracy10% to 90% RH @ 23°C (73.4°F) (±2.5% RH)
(< 10%, > 90%RH @ 23°C (73.4°F) (±5.0% RH)
Humidity densorElectronic capacitance polymer film sensor.
Data storage capacity99 points
Response time (humidity)For 90% of total range - 60 s with 1 m/s air movement
Environmental Specifications
Operating temperatureTemperature: -20°C to 60°C
Humidity: 0°C to 55°C
Storage temperature-20°C to 60°C at < 80% R.H. (with battery removed)
Mechanical and General Specifications
Weight190 g (6.7 oz)
Dimensions194 x 60 x 34 mm
Battery type4 AAA alkaline batteries
Battery Life200 Hours

Models: Fluke 971: Temperature Humidity Meter

Fluke 971
Fluke 971 Temperature Humidity Meter
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  •     Operation manual
  •     4 AAA alkaline batteries
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Rated 1 out of 5 by from Disappointed The 971 seems to be a disposable meter. Our company purchased three of these meters and all three meters can not be recertified/recalibrated. As a Commissioning Engineer who focuses on HVAC system testing and investigates IAQ complaints, it is imperative the instruments I use are verifiably accurate. To be fair, I have not attempted to send the meters to Fluke for calibration. A local vendor has been able to certify and calibrate every other meter we own (multiple manufacturers including Fluke) and trust them when they say the meter is out of calibration and not repairable.
Date published: 2015-12-31
Rated 2 out of 5 by from Watch Out for Cost of Calibration! I am a licensed professional engineer (PE). I bought the Fluke 971 in August 2013 to check moisture levels on supermarket projects. This brand new meter consistently reads 2% RH too low when compared to our "reference instrument" [Vaisala HMI41 meter with HMP46 sensor (combined, over $1200) that was calibrated ($275) in August 2013]. The specifications for the Fluke 971 state that it is +/- 2.5% accuracy between 10 and 90% RH I called Fluke and asked if my brand new meter could be calibrated under warranty and customer service said, "No". Customer service then advised that I could get factory calibration for $575. I also have a competitor's meter. This one-year-old meter consistently reads within 0.3% RH of our "reference instrument" (see above). Further, competitor offers "NIST traceable calibration" for $125. In a meter like this, calibration of RH sensors is way more important than temp sensors and should be done annually. Cost of calibration should be a definite consideration when buying a RH meter.
Date published: 2013-08-13
Rated 5 out of 5 by from Good Unit I like this unit. I would buy it again. I have bought 3 other units that have failed in less than a year. I've had the electrical crew use this for 2 years with no problems.
Date published: 2013-03-08
Rated 5 out of 5 by from Great Product Very accurate and useful tool to have, a must have for a Pro HVAC tech
Date published: 2012-10-29
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