58 Thermalert GP Series Operator’s Manual
The electronics enclosure is designed to operate in ambient temperatures of 0
to 50°C (32 to 120°F). Operation of these units outside of specified ambient
temperatures is not recommended, and accuracy cannot be guaranteed.
B.7.1.2 Distance and Spot Size
The desired spot size to be measured on the target will determine the mini-
mum and maximum working distance and the appropriate focus model. The
target must contain the entire sensor field of view. The sensor must be posi-
tioned so the field of view is the same as or smaller than the desired target
size. Figure B-25 illustrates proper sensor placement (applies to all models).
Best Good Incorrect
Target equal
to spot size
Target smaller
than spot size
Target greater
than spot size
Sensor
Figure B-25: Proper Sensor Placement
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