testo 645 humidity/temperature measuring instrument

Description

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.

Areas of application of the testo 645 humidity/temperature measuring instrument

Monitoring of temperature and humidity values in production, storage and server rooms, museums, archives, cold stores, containers and display cases
Location of mould formation in residential or other buildings

Delivery Scope

testo 645 humidity/temperature measuring instrument, including battery.

Technical data

Temperature - Pt100

Measuring range	-200 to +800 °C
Accuracy	±0.1 % of mv (200.1 to 800 °C) ±0.2 °C (-200 to 200 °C)
Resolution	0.1 °C

Temperature - NTC

Measuring range	-50 to +150 °C
Resolution	0.1 °C

Temperature - TC Type K (NiCr-Ni)

Measuring range	-200 to +1370 °C
Accuracy	±0.5 % of mv (-200 to -60.1 °C) ±0.5 % of mv (+60.1 to +1370 °C) ±0.3 °C (-60 to +60 °C)
Resolution	0.1 °C

Accessories

Additional accessories and Spare parts