BETRIEBSANLEITUNG
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4 Getting started
4.1 Power supply
The battery compartment cover is located on the back of the device. If the battery voltage is too low to
ensure reliable measurement values, this will be indicated on the display by the low battery icon. The
battery then needs to be replaced. To do so, the screw on the battery compartment cover must be
loosened. The cover can then be opened and the battery can be replaced. Mind correct polarity when
inserting the battery. After replacing battery, re-attach the cover and fasten the screw again.
5 Operation
5.1 Measurement
5.1.1 Switch on the instrument
Press the power button to switch on the PCE-HVAC 3.
5.1.2 Perform measurements
1. Place the thermo-hygrometer’s sensor in the area where the measurements are to be made.
2. Wait until the measurement value has stabilized.
3. Press the MODE button several times to choose between RH%, g/m³ or g/ft³.
4. The function key for °C and °F changes the temperature unit.
5.1.3 Measurement of absolute moisture
1. Use the MODE key to choose the absolute moisture function (g/m³ or gr/ft³) as described. “abs”
will appear on the left side of the display.
2. The displayed measurement value shows the absolute moisture.
5.1.4 Measurement of the dew point temperature
1. In order to measure the dew point temperature, you must press the °C / °F button until the display
indicates “DP” in the bottom right corner.
2. The displayed measurement value shows the dew point temperature.
5.1.5 Measurement of the wet bulb temperature
1. Press the °C / °F button until “WB” is shown in bottom right corner of the display.
2. The displayed measurement value shows the wet bulb temperature.
5.1.6 Measurement of the temperature
1. If temperature measurements need to be made, you have to press the °C / °F button until °C or
°F is displayed in the bottom right corner of the display.
2. The displayed measurement value shows the temperature in the chosen temperature unit.
5.2 Further functions
5.2.1 Data-HOLD
Press and quickly release the HOLD button to freeze the displayed measurement value. In the bottom
right corner, “HOLD” will be shown. To deactivate the function and get back to normal measurement
mode, you simply need to press the button once again.
5.2.2 Measurement of minimum and maximum values
1. This mode allows you to only show the highest or lowest value on the display. The measurement
value that is permanently shown in the display will not be changed until a lower / higher value is
measured in the background.
2. If the MIN / MAX button is pressed once and the display shows “MIN”, the instrument will start the
minimum value measurement.
3. By pressing the MIN / MAX button once again, the instrument will only show the highest
measurement value and display “MAX”.
4. If you press the MIN / MAX button again, the instrument will return to normal measurement mode.
“MIN” or “MAX” is no longer shown in the display.