Testo 871 [26/52] Setting measuring functions

Testo 871 [26/52] Setting measuring functions
7 Performing the measurement
26
7.2 Setting measuring functions
1 - Open the Measurement submenu.
The submenu with measurement functions opens:
Pixel mark:
o Single point measurement: the temperature measuring
point in the centre of the image is marked with white
crosshairs and the value is displayed. In saved images,
the crosshairs can be moved using the joystick in order to
read the value of other measuring points.
o Coldspot, Hotspot: the lowest or highest temperature
measuring point is marked with blue or red crosshairs and
the value is displayed.
Measurement range: choose between two temperature
ranges.
Differential temperature: identifies the difference between two
temperatures.
External measurement values: select Humidity, Current,
Voltage, Solar, Power, None.
IFOV: the IFOV warner shows what can be measured
accurately from a specific distance.
2 - Move the joystick up/down to select the required function and
then press OK.

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