Testo 645 Humidity/temperature measuring instrument

Order-Nr.  0560 6450

The testo 645 high-precision humidity and temperature measuring instrument offers two probe inputs for attaching a comprehensive range of probes:
Channel 1: temperature probe, type K/J/S, NTC
Channel 2: humidity/temperature probe or Pt 100 temperature probe

At the touch of a button, the thermohygrometer automatically indicates the measurement parameters of temperature, relative humidity, dew point, pressure dew point, absolute humidity, degree of humidity and enthalpy, along with min., max. and mean values, as well as the last measured value. Convenient evaluation of the measurement data is possible using the optional PC software. Measurement data can also be printed out directly at the measuring location via the optional testo fast printer.

Testo 645 Humidity/temperature measuring instrument specification :

• Dimensions : 215 x 68 x 47 mm
• Weight : 255 g
• Operating temperature : 0 to +50 °C
• Storage temperature : -20 to +70 °C
• Battery life : 45 h
• Measuring range Humidity – Capacitive : 0 to 100 %RH
• Measuring range Temperature – TC Type S  :-50 to +1700 °C
• Measuring range Temperature – TC Type J : -40 to +750 °C
• Measuring range Temperature – TC Type K : -200 to +1370 °C
• Measuring range Temperature – NTC : -50 to +150 °C
• Measuring range Temperature – Pt100 : -200 to +800 °C