Eagle 320 Manuale Utente Scaricare il pdf (Pagina 9)

Page 7 of 32 P/N 595176-01 Rev. C 1/11

• Small differences between the temperatures of objects are more obvi-

ous at lower temperatures. Objects at temperatures above 200° F / 93°

C will exhibit less difference.

An object at 100° F / 38° C will appear very distinct from an object

at 72° F / 23° C in the thermal image display.

An object at 300° F / 150° C and one at 400° F / 205° C may look

fairly similar in the thermal image display.

• If a concrete oor and a hole in that oor have the same temperature,

there will be no apparent difference in the thermal image display to

indicate the presence of the hole.

• Water mist, spray, condensation, or highly saturated fog may obscure or

block the thermal image of high temperature objects or heat sources.

• Extremely dense smoke can obscure some heat sources or high tem-

perature objects by absorbing the infrared energy from the objects and

making them less distinct in the thermal image display.

• Heated smoke or a layer of heated gases can obscure the presence

of heat sources or high temperature objects by creating a uniform

temperature image that makes the objects less distinct in the thermal

image display.

Infrared energy behaves much like light in that it will reect off a smooth shiny

surface like water, glass, or shiny metal. But unlike light, it will not pass through

visually transparent materials such as glass or clear plastic.

• Any smooth surface like water, a window, or a painted metal door will

reect infrared energy. Practice viewing reected heat sources to see

how they differ from direct heat sources.

Glass walls and doors or painted metal surfaces act like mirrors

to reect infrared energy. The actual source of heat may be off at

an angle or in the opposite direction from where it appears.

When viewing a pool of water on a oor or a hole lled with water,

the thermal imaging camera display may show a reection of a

heat sources above and away from the water surface.

• When viewing a source of high temperature through a clear window, the

thermal imaging camera display will only show heat sources reected off

the front of the window and not the heat source behind the window.

Looking directly at a window will show a reection of the user hold-

ing the camera and not a source of high temperature behind the

window.

Keep the lens clean while operating the thermal imaging camera.

• Dirt or soot build up on the lens will obscure or reduce the clarity of

the thermal image. While in use, wipe the lens with a glove or cloth as

needed. Clean the lens thoroughly after use.

• Condensation on the lens of the thermal imaging camera will also block

the thermal image and make entire display appear blank. Use an ap-

proved anti-fog preparation on the lens to reduce the possibility of

condensation on the lens.

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Eagle 320 Manuale Utente Pagina 9

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