The PHT -771 digital psychrometer simultaneously displays % RH, temperature as well as dew point, web bulb or probe temperature. The psychrometer calculates T1-T2 differential with the thermistor temperature Probe (sold separately). Simply twist sensor cap for protection in storage. Data hold maintains current reading on display. Features maximum/minimum readings and auto power-off. The Psychrometer includes two AAA batteries.
Product Features
Temperature range:-4.0 to 122.0°F (-20 to 50°C)
Humidity range: 0.0 to 100.0% RH
Dew Point: -90.4 to 122.0 ºF (-68 to 50 ºC) (calculated from RH and air temperature measurements)
Wet Bulb: -6.88 to 122.0 ºF (-21.6 to 50 ºC) (calculated from RH and air temperature measurements)
Calculates T1-T2 differential (Air Temperature-External Probe Temperature) using optional probe
Unique sensor cap design twists to closed position for protection during storage
Switchable °F/°C temperature units with 0.1° resolution