Operation
44 Testboy
®
TV 328
Size of measuring surface - distant-to-spot ratios (D/S)
In order to get accurate measuring results, the object to be measured must
be larger than the measuring surface of the infrared thermometer. The
detected temperature is then the average temperature of the measured
surface area. The smaller the object is the shorter the distance to the
infrared thermometer should be. The exact size of the measurement area
can be seen in the following diagram. This is also printed on the outside of
the instrument.
For exact measurements, the object to be measured should be at
least twice the size of the measured surface area!
Maintenance and cleaning
To avoid electrical shocks, do not allow liquid to penetrate the
housing.
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Clean the housing at regular intervals using a dry cloth without any
cleaning agents. Do not use abrasive, scouring or solvent-based
cleaners.
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Blow loose dirt particles from the IR lens. Brush of any remaining dirt
using a fine lens brush.
Summary of Contents for TV 328
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