Temperature and humidity are two important factors in maintaining optional comfort levels and good indoor air quality. Quality and conveniently take accurate humidity and temperature readings with the Fluke 971.
It is invaluable for facility maintenance and utility technicians, HVAC-service contractors, and specialists who assess indoor air quality (IAQ). Lightweight and easy to hold, it’s the perfect tool for monitoring problem areas. With a rugged holster and protected sensor, the Fluke 971 is built to perform and made to last.
- New and improved digital sensor for faster response times
- 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
- Compact and lightweight at 188 g (6.63 oz)
- Temperature range from -20°C to 60°C (-4°F to 140°F)
- Relative humidity from 5% to 95%
- Min/Max/Avg/Hold functions
- Low battery indicator
- One-year warranty
| Specifications | 971 |
| Temperature range | -20°C to 60°C (-4°F to 140°F) |
| Temperature accuracy
0°F to 45°C (32°F to 113°F) -20°C to 0°C and 45°C to 60±C (-4°F to 32°F and 113°F to 140°F) |
±0.5°C (±1.0°F)
±1.0°C (±2.0°F) |
| Resolution | 0.1°C (0.1°F) |
| Response time (temperature) | 500ms |
| 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) <10%, >90% R.H.@ 23°C (73.4°F) |
±2.5% R.H
±5.0% R.H. |
| Humidity sensor | Electronic capacitance polymer film sensor |
| Data storage | 99 points |
| Response time (humidity) | For 90% of total range – 60 sec with 1 m/s air movement |
| General | |
| Operating temperature | Temperature: -20°C to 60°C (-4°F to 140° F)
Humidity: 0°C to 60°C (32°F to 140° F) |
| Storage temperature | -20°C to 55°C (-4°F to 131° F) |
| Battery life | 4 AAA alkaline, 200 hours |
| Safety | Complies with EN61326-1 |
| Size (HxWxD) | 194 mm x 60 mm x 34 mm |
| Weight | 0.18 kg (6.63 oz) |