Overview Temperature and humidity are two important factors in maintaining optimal comfort levels and good indoor air quality. Quickly and conveniently take accurate humidity and temperature readings with the Fluke 971.The Fluke 971 is invaluable for facility maintenance and utility technicians, HVAC-service contractors, and specialists who assess indoor air quality (IAQ). Lightweight and easy to hold, the Fluke 971 is the perfect tool for monitoring problem areas. With a rugged holster and protective sensor cover, the Fluke 971 is built to perform and made to last. 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 with protective cover 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 Specifications Specifications Temperature -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 & 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 Temperature update rate 500 ms Temperature sensor type NTC Relative humidity range 5% to 95% RH Relative humidity accuracy 10% to 90% RH @ 23°C (73.4°F) (±2.5% RH) (< 10%, > 90%RH @ 23°C (73.4°F) (±5.0% RH) Humidity densor Electronic capacitance polymer film sensor. Data storage capacity 99 points Response time (humidity) For 90% of total range - 60 s with 1 m/s air movement Environmental Specifications Operating temperature Temperature: -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 Weight 190 g (6.7 oz) Dimensions 194 x 60 x 34 mm Battery type 4 AAA alkaline batteries Battery Life 200 Hours 971 Temperature Humidity Meter
