FLIR FLIR TG167, Руководство пользователя

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Glossary 14
relative
humidity Relative humidity represents the ratio between the current water va-
pour mass in the air and the maximum it may contain in saturation
conditions.
saturation
color
The areas that contain temperatures outside the present level/span
settings are colored with the saturation colors. The saturation colors
contain an ‘overflow’ color and an ‘underflow’ color. There is also a
third red saturation color that marks everything saturated by the de-
tector indicating that the range should probably be changed.
span
The interval of the temperature scale, usually expressed as a signal
value.
spectral (radi-
ant) emittance Amount of energy emitted from an object per unit of time, area and
wavelength (W/m
2 /μm)
temperature
difference, or
difference of
temperature.
A value which is the result of a subtraction between two temperature
values.
temperature
range
The current overall temperature measurement limitation of an IR cam-
era. Cameras can have several ranges. Expressed as two blackbody
temperatures that limit the current calibration.
temperature
scale
The way in which an IR image currently is displayed. Expressed as
two temperature values limiting the colors.
thermogram infrared image
transmission
(or transmit-
tance) factor Gases and materials can be more or less transparent. Transmission
is the amount of IR radiation passing through them. A number be-
tween 0 and 1.
transparent
isotherm
An isotherm showing a linear spread of colors, instead of covering the
highlighted parts of the image.
visual Refers to the video mode of a IR camera, as opposed to the normal,
thermographic mode. When a camera is in video mode it captures or-
dinary video images, while thermographic images are captured when
the camera is in IR mode.
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