Siemens Ardoptix PT 140 AF1, Operating Manual, Page: 15 / 68

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Operating manual
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7.5 Align the pyrometers
Direct the Ardoptix to the object to be measured. The target marker in
the through-the-lens sighting device indicates the size of the target. (see
technical data/ course of target). When measuring with a two-colour py-
rometer, the object to be measured is not required to fill the complete
measurement area. The integrated traffic light function in the viewfinder
signals an inadmissible partial illumination and the measurement is
stopped.
7.6 Performing a measurement
Press the ON button to switch on the device. If necessary adjust the ratio
correction. Focus the target marker at the diopter correction switch and
adjust the pyrometer lens to the correct measuring distance.
Measurement is in progress as long as you press the ON button. The
temperature (depending on the configured mode) is displayed on the
rear panel when you release the ON button. As an option, the measure-
ment readings can be transmitted via interface.

1) Traffic light indicates
2) Measurement area
3) Target object
2
3
1
The amount of thermal radiation emitted from an object de-
pends on the specific radiation properties of the material and its
surface. Non-contact temperature measurement requires that
you determine the material constant (emissivity) of the target
object prior to first-time use