Milwaukee M12 IR Operator's Manual download pdf (Page 29)

M12 160x120 Thermal Imager Operator's Manual 27

xed focus An optical system for a camera or thermal imager that is set to one average distance, resulting

in an in-focus range that is not adjustable.

FPA (focal-plane

array)

A rectangular at-panel matrix of detector elements on which the Thermal Imager’s optical

lenses and lters focus infrared energy to produce a thermal image. The type of FPA used in

the Thermal Imager is called a microbolometer. It produces signals that make a new complete

thermal image 60 times per second.

focal point The distance from the lens at which the thermal imager is in focus.

focus distance The closest distance at which you can focus the thermal image: 11.8 inches or 30 cm.

focusing ring The movable ring around the front lens that you adjust for the sharpest thermal image. This

has no effect on the visual digital camera image.

frame rate The number of times per second that the Thermal Imager displays a completely updated

thermal image: 60 times per second, or 60 Hz (Hertz).

full scale The minimum temperature and the maximum temperature that the Thermal Imager can

measure. When in AUTO RANGE mode, the Thermal Imager adjusts itself to a portion of full

scale, called “span” that is somewhere within the full-scale endpoints. Using MANUAL RANGE

settings, you can set the Thermal Imager to cover full scale, but usually this makes it more

difcult to discern small temperature variations in the thermal image.

function key

The

button on the directional keypad. Its function changes depending on what activity is

happening. It is often used as the ENTER key to conrm a menu selection.

image Either a thermal image or a visual image. The Thermal Imager captures both kinds every time

you pull the trigger. The pair of images are called an “image set.” When you save, erase, or

load an image to a PC, both the thermal and visual images always stay bundled together.

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Milwaukee M12 IR Operator's Manual Page 29