Manual
6
5 Instructions
5.1 To switch on the device
Switch the device on by means of the On/Off key (5).
5.2 To select the temperature to be measured and the unit
Press the °F / °C / WBT / Dew Point selection key (4) to select between temperature, dew point
temperature or wet bulb temperature and to choose a unit. Press and hold the key until the desired
temperature to be measured appears along with the correct unit. The possible selections appear in the
following order: °C
°F
°C Dewpoint
°F Dewpoint
°C Wet Bulb
°F Wet Bulb.
5.3 Humidity and ambient temperature measurement
1. Target the probe (1) at the area which you would like to measure and wait until the values have
stabilised.
2. Read the relative humidity, the values for the ambient temperature, the dew point temperature and the
wet bulb temperature which are indicated in the display (2).
Note
: Do not immerse the probe in liquids as it is only suitable for air.
5.4 MAX / MIN function
1. Select the desired temperature to be measured and unit before activating the MAX / MIN function.
2. Press the MAX / MIN key to enter the MAX / MIN recording mode.
3. If you press the key once, MAX is selected and if you press it twice, MIN is selected. The device will
save the highest or the lowest value measured during the time between activation and deactivation of
the MAX / MIN function.
4. Press and hold the key for more than 2 seconds to finish the MAX / MIN recording.
5.5 To freeze / hold the reading
Press the HOLD /
key (6) to hold the reading in the display. If you press this key again, you will return
to normal measurement mode.
5.6 To switch the backlight on and off
Press and hold the HOLD /
key (6) for more than 2 seconds to switch the backlight on or off.
5.7 Automatic Power Off
To save battery voltage, the device is equipped with an Automatic Power Off function. The device
switches off automatically after 15 minutes of inactivity. The
icon indicates that the Automatic Power
Off function is activated.
To deactivate the Automatic Power Off function
1. Switch off the device.
2. Press and hold the HOLD /
key (6) and switch on the device by pressing the On/Off key (4) once.
3. After all icons have been shown in the display, release the HOLD /
key (6). The
icon will
disappear from the display. Automatic Power Off is now deactivated. When you switch on the device
next time, it will be activated again.
5.8 To replace the battery
When the
icon appears in the display, the battery must be replaced. Open the battery compartment
and replace the old battery by a new one (1 x 9 V battery NEDA1604, 6F22 or similar).
