FLIR ThermaCAM E4 Operator's Manual page 74

Term or expression
relative humidity
saturation color
span
spectral (radiant) emittance
temperature range
temperature scale
thermogram
transmission (or transmittance) (factor)
transparent isotherm
66
Explanation
Percentage of water in the air, relative to what is
physically possible. Air temperature dependent.
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 detector indicating
that the range should probably be changed.
The interval of the temperature scale, usually ex-
pressed as a signal value.
Amount of energy emitted from an object per unit
of time, area and wavelength (W/m
The current overall temperature measurement
limitation of an IR camera. Cameras can have sev-
eral ranges. Expressed as two blackbody tempera-
tures that limit the current calibration.
The way in which an IR image currently is dis-
played. Expressed as two temperature values lim-
iting the colors.
infrared image
Gases and materials can be more or less transpar-
ent. Transmission is the amount of IR radiation
passing through them. A number between 0 and
1.
An isotherm showing a linear spread of colors, in-
stead of covering the highlighted parts of the im-
age.
Publ. No. 1 558 017 Rev. a62 – ENGLISH (EN) – August 19, 2004
2
/μm)