Measuring functions
Briefly pressing the measure button (1) once switches the laser on and actuates a single measurement in the selected mode. The measuring process can take 1 to 2 s to complete. The measurements are displayed in the display section with the white background.
Upon completion of the measurement, the laser switches off automatically.
The most recent measurement readings are shown on the display.
Press and hold the measuring button (1) to perform continuous measurements in the selected mode. The laser remains switched on. Using slow movements, aim the laser circle at each of the surfaces to be measured, one by one. Move the measuring tool slowly in the room to perform humidity and ambient temperature measurements.
The indication on the display and the indicator LED (15) are continually updated. As soon as you let go of the measuring button (1), the measurement is stopped and the laser is switched off.
The most recent measurement readings are shown on the display. The indicator LED remains unchanged for the last display.
Surface temperature mode is used to measure the surface temperature of an object.
Press the measure button (1) and aim the laser circle so that it is perpendicular to the centre of the object being measured. The surface temperature measured (h) is displayed in the area of the display with the white background. When the next measurement is taken, the previously measured value appears in the display (i).
Press the back button/delete button (11) to delete the measured value (h) in the area of the display with the white background.
The indicator LED (15) does not light up in surface temperature mode.
You can use this mode to measure the temperature of radiators, underfloor heating or fridge interiors, for example.
In reference temperature mode, 2 measured surface temperatures are compared and the difference is displayed. This way, significant temperature differences can be measured at 2 different positions on one or more surfaces.
Press the measure button (1) to measure the reference value (j). All subsequent measured values are then related to the reference value (j). The temperature difference (k) is displayed immediately after a new measurement. With each new measurement, the measured value (h) is updated in the area of the display with the white background and the difference from the reference value is recalculated.
If the new value (h) is more than 1 °C lower than the reference value (j), the indicator light (15) lights up blue. If the new value (h) is more than 1 °C lower than the reference value (j), the indicator light (15) lights up red. If the difference value (k) falls within the ±1 °C range, the indicator light (15) does not light up.
In thermal bridge mode, the surface and ambient temperatures are measured and compared with each other. If there is a significant difference between the two temperatures, a thermal bridge see Thermal bridge warning is issued.
Press the measure button (1) and aim the laser circle so that it is perpendicular to the centre of the object being measured. Once the measurement is complete, the measured surface temperature (h) is displayed. The ambient temperature (s) is automatically displayed before the measurement is taken.
The measuring tool automatically compares the values and interprets the result as follows:
Green indicator LED (15): Low temperature difference, no thermal bridges present.
Yellow indicator LED (15): Temperature difference near the limit value, a thermal bridge may be present in the area being measured; if necessary, repeat the measurement at a later point in time.
Red indicator LED (15): The symbol indicates that the surface temperature of the area being measured deviates significantly from the ambient temperature. There is a thermal bridge in the area being measured, which is an indication of poor insulation. The room is too cold – if it is being heated normally, then the low temperature is an indication of poor overall insulation.
If there are thermal bridges, check the thermal insulation in this area. If necessary, consult a building expert.
In mould warning mode, the ambient temperature and relative humidity see Relative humidity are measured. The dew point temperature see Dew point temperature is then calculated using these two values. The surface temperature is also measured.
The dew point temperature is compared with the surface temperature and the result is interpreted with regard to the risk of mould forming.
Relative humidity (u), ambient temperature (s) and calculated dew point temperature (q) are determined and displayed automatically.
Press the measure button (1) and aim the laser circle so that it is perpendicular to the centre of the object being measured. The surface temperature measured value (h) is displayed in the area of the display with the white background.
The measuring tool automatically compares the values and interprets the result as follows:
Green indicator LED (15): There is no risk of mould forming under the current conditions.
Yellow indicator LED (15): The values are near the limit; pay attention to room temperature, thermal bridges and humidity, and repeat the measurement if necessary at a later point in time.
Red indicator LED (15): There is an increased risk of mould forming because the humidity is too high or the surface temperature is close to the dew point temperature.
When the risk of mould is indicated, you should – depending on the cause – reduce the humidity through more frequent and thorough ventilation, increase the room temperature and eliminate thermal bridges. Contact a building expert, if necessary.
Note: Mould spores cannot be detected with the measuring tool. It only indicates that mould may form if the conditions remain unchanged.