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34
Glossary
relative
Relative humidity represents the ratio between the current water va-
humidity
pour mass in the air and the maximum it may contain in saturation
conditions.
saturation
The areas that contain temperatures outside the present level/span
color
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-
Amount of energy emitted from an object per unit of time, area and
ant) emittance
wavelength (W/m
temperature
A value which is the result of a subtraction between two temperature
difference, or
values.
difference of
temperature.
temperature
The current overall temperature measurement limitation of an IR cam-
range
era. Cameras can have several ranges. Expressed as two blackbody
temperatures that limit the current calibration.
temperature
The way in which an IR image currently is displayed. Expressed as
scale
two temperature values limiting the colors.
thermogram
infrared image
transmission
Gases and materials can be more or less transparent. Transmission
(or transmit-
is the amount of IR radiation passing through them. A number be-
tance) factor
tween 0 and 1.
transparent
An isotherm showing a linear spread of colors, instead of covering the
isotherm
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.
#T559954; r. AL/37426/37426; en-US
2
/μm)
228
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