protech QM7420 User Manual

5
Distance & Spot Size
As the distance (D) from the object increases, the spot size
(S) of the area measured by the unit becomes larger. The
relationship between distance and spot size for each unit is
listed below. The focal point for each unit is 203mm (8”).
The spot sizes indicate 90% encircled energy.

protech QM7420 Specifications

General

Brand	protech
Model	QM7420
Category	Thermometer
Language	English