HD2101.1 and HD2101.2 are portable instruments with LCD display. They measure relative humidity and temperature with combined probes.

Temperature only is measured by Pt100 or Pt1000 immersion, penetration airor contact probes.

When the humidity/temperature combined probe is connected, the instrument calculates and displays the absolute humidity, the dew point, the partial vapour pressure, the wet bulb temperature, the mixing ratio, the enthalpy and the comfort indices.

The probes are fitted with an automatic detection module, with the factory calibration data already stored inside.

The instrument HD2101.2 is a data logger. It stores up to 38,000 samples which can be transferred into a PC connected to the serial ports RS232C and USB 2.0 or into a portable printer.