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User Guide
9.2 Operation (Example 2 : complex temperature measurement)
In some industrial applications, a window or viewing port may be situated
between the thermometer and the target object. This can lead to a reduction
in the amount of radiant energy reaching the thermometer from the target.
The following instructions detail the operation of a Wahl DHS520/520B in a
typical complex temperature measurement application (as in Fig. 23).
Viewing port/window: Glass - typical window compensation factor
1
(0.920)
2
Hot target: Mild steel - typical emissivity value (0.35)
Fig. 23 Typical complex temperature measurement application
1
Wahl DHS520
2
315023
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