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SONOCHEK
Operation of the device, sensor system and apps
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SONOCHEK 09.2018
3.5.8 Using the probe tip
During the measurement, the sensor is to be pressed against the object to be examined with
light even pressure and as vertically as possible to the object surface.
3.5.9 Temperature measurements
Important!
For correct temperature measurements, ensure that the surface of the
temperature sensor is free of impurities.
The infrared temperature meter is calibrated on a black emitter that emits the maximum possible
temperature (100% radiation
→ emission ratio ε = 1). Since the radiation properties of the
surfaces of measured objects deviate from this, this must be taken into consideration for the
non-contact temperature measurement. Painted or oxidized surfaces usually have an emission
ratio of 0.9. This setting is suitable for many measurement tasks. Additional values for frequently
used materials can be taken from so-called emission ratio tables.
The emission ratio can be set on the SONOCHEK as follows:
In the SONOLEVEL, the menu item

Settings

of the temperature measurement
can be used to either select a material for which the emission ratio is stored, or to manually
determine a value for the emission ratio.
Visual detection field of the infrared
temperature sensor
D = 38 mm
90°