User Manual

3. USE IN STAND-ALONE MODE

The instrument can operate in two modes:

 the stand-alone mode described in this section,

 the record mode, in which it is controlled by a PC. This mode is described in the next section.

3.1. TEMPERATURE AND HUMIDITY MEASUREMENT

 Remove the cap protecting the sensor.

 Long-press the key to switch the instrument on.

The instrument displays the time, then the measurement. The time is set using the Data Logger Transfer software (see §4).

 To display the measurements in °F, press the °C/°F key.

Keep the sensor away from your mouth to avoid throwing off the humidity measurement.

Wait for the display to stabilize before reading the measurement.

3.2. OTHER FUNCTIONS

 The display can be changed by pressing the key. The instrument then displays the dew point (Dp) and the relative humid-

ity (RH). A second press displays the dew point (Dp) and the ambient temperature (T). A third press restores the initial display.

  



°C / ° F

The last display selected is saved when the instrument is switched off.

The relative humidity (RH) is the ratio of the quantity of water vapour contained in a volume of air to the maximum quantity

of water vapour this same volume of air could contain at the same temperature and same pressure.

The dew point is the lowest temperature to which a mass of air can be subjected, at constant pressure and absolute humidity,

without liquid water forming by saturation.