Siemens Ardoptix PT 140 AF1, Operating Manual, Page: 14 / 68

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Operating manual
6
7 Preparing the pyrometer for measurements
7.1 General Information
The pyrometer’s field of view must remain unobstructed. Any obstruction
may lead to measurement errors.
7.2 Diopter compensation
7.3 Brightness control to protect the eye
7.4 Focusing the pyrometer

To ensure precise temperature measurement, the pyrometer
must be correctly focused on the target object
The pyrometer offers diopter compensa-
tion to adjust the sighting device to the
user’s vision
. Turn the ring until you see
a sharp image of the target spot indica-
tion in the viewfinder.
Instruments with a measuring range of
> 2000 °C are equipped with a polarisation
filter to control brightness and protect the
user’s eye.
The pyrometer is equipped with focusable
optics. Turn the lens until the target object
and the target marker (distinctly marked in
the viewfinder) both appear in sharp focus
simultaneously