Measuring Functions

To call up further functions that may be helpful for the display, press the Func (7) button. Use the left-hand arrow button (13) or the right-hand arrow button (9) to navigate through the displayed options to select a function. Select a function and press the Func (7) button again.

The following measuring functions are available:

• <Automatic>
  Colours are distributed automatically in the thermal image.
  Note: To ensure high accuracy across the entire measuring range, measurements are carried out in two temperature ranges. With the <Automatic> measuring function, the measuring tool automatically selects the appropriate temperature range according to the temperature distribution in the thermal image. When doing so, it assesses how many measured values fall above a certain temperature threshold. If very small but hot objects are being measured, it may select the low temperature range that is not suitable for high temperatures. This can be determined from the preceding symbol, ~. In such cases, switch to the <Manual> measuring function, in which the colour distribution corresponds to the set temperature range.

• <Heat Detector>
  Only the warmer temperatures in the measuring range are displayed as a thermal image in this measuring function. The area outside these warmer temperatures is shown as a real image in grey scale. The depiction in grey scale prevents coloured objects from being wrongly associated with temperatures (e.g. a red cable in the control cabinet when searching for overheated components). Adjust the scale using the up arrow button (6) and down arrow button (11). This expands or reduces the temperature range, thereby expanding or reducing the thermal image. The measuring tool continues to measure minimum and maximum temperatures and displays these at the ends of the scale (h).

• <Cold Detector>
  Only the colder temperatures in the measuring range are displayed as a thermal image in this measuring function. The area outside these colder temperatures is shown as a real image in grey scale to prevent coloured objects from being wrongly associated with temperatures (e.g. a blue window frame when searching for faulty insulation). Adjust the scale using the up arrow button (6) and down arrow button (11). This expands or reduces the temperature range, thereby expanding or reducing the thermal image. The measuring tool continues to measure minimum and maximum temperatures and displays these at the ends of the scale (h).

• <Manual>
  If greatly deviating temperatures are measured in the thermal image (e.g. a radiator as a hot object when searching for thermal bridges), the available colours are distributed among a large number of temperature values in the range between the maximum and the minimum temperature. This can result in a situation where subtle temperature differences can no longer be shown in detail. To obtain a detailed depiction of the temperature range to be examined, take the following steps: After switching to <Manual> mode, you can set the maximum and the minimum temperature. Doing this enables you to set the temperature range that is relevant to you and in which you would like to detect subtle differences. The <Reset scale> setting automatically readjusts the scale to the measured values in the infrared sensor's field of view.