Apogee MI-220 Owner's Manual - Page 8

Browse online or download pdf Owner's Manual for Measuring Instruments Apogee MI-220. Apogee MI-220 16 pages. Mi series infrared temperature meter

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Field of View

The field of view (FOV) is reported as the half-angle of the apex of the cone formed by the target surface (cone base) and the

detector (cone apex), as shown below, where the target is defined as a circle from which 98 % of the radiation detected by

the radiometer is emitted.

Sensor FOV, distance to target, and sensor mounting angle in relation to the target will determine target area. Different

mounting geometries (distance and angle combinations) produce different target shapes and areas, as shown below.

A simple FOV calculator for determining target dimensions based on infrared radiometer model, mounting height, and

mounting angle, is available on the Apogee website:

http://www.apogeeinstruments.com/using-your-apogee-instruments-

infrared-radiometer/.