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Fluke 971 Hygrometer

The Fluke 971 provides the answers you need, with the reliability and ruggedness that Fluke products are known for. From the wet bulb and dew point calculations to the rugged holster and belt clip, the Fluke 971 provides the features you want with an eye towards protecting your investment for some time to come.

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$392.50 tax incl.

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  • Compact and lightweight (190 g/6.7 oz)
  • Temperature range from -20°C to 60°C (-4°F to 140°F)
  • Measures dew point and wet bulb
  • Relative humidity from 5 % to 95 %
  • Min/Max/Avg data hold
  • Low battery indicator
  • Backlit dual display of humidity and temperature
  • 99 record storage capacity
  • Ergonomic design with belt clip and protective holster
  • Quick-response capacitance sensor with twist-open protective cover




Temperature Range -20°C to 60°C (-4°F to 140°F)
Temperature Accuracy 0°C to 45°C: ±0.5°C
-20°C to 0°C and 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
Resolution 0.1°C / 0.1°F
Response Time (temperature) 500 ms
Temperature Sensor Type NTC
Relative Humidity Range 5% to 95% R.H.
Relative Humidity Accuracy 10% to 90% R.H. @ 23°C (73.4°F) ±2.5% R.H.
<10%, > 90% R.H. @ 23°C (73.4°F) ±5.0% R.H.
Resolution 0.1% R.H.
Response Time (Humidity) For 90% of total range - 60 sec. with 1 m/s air movement
Humidity Sensor Electronic capacitance polymer film sensor
Data Storage 99 points
Operating temperature Temperature -20°C to 60°C (-4°F to 140°F)
Humidity 0°C to 55°C (32°F to 131°F)
Storage temperature -20°C to 60°C (-4°F to 140°F) at < 80% R.H. (with battery removed)
Weight 190 g (6.7 oz)
Dimensions (HxWxD) 194 mm x 60 mm x 34 mm (7.6 in x 2.4 in x 1.3 in)
Battery type 4 AAA alkaline batteries
Battery life 200 Hours
Safety approval Electromagnetic compatibility: Complies with EN 61326-1
Warranty 12 months


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