FLIR i5 User Manual page 135

Term or expression
palette
pixel
radiance
radiant power
radiation
radiator
range
reference temperature
reflection
relative humidity
saturation color
span
spectral (radiant) emittance
temperature difference, or difference
of temperature.
temperature range
temperature scale
thermogram
Publ. No. T559382 Rev. a358 – ENGLISH (EN) – June 23, 2009
Explanation
The set of colors used to display an IR image.
Stands for picture element. One single spot in an image.
Amount of energy emitted from an object per unit of time, area
2
and angle (W/m /sr)
Amount of energy emitted from an object per unit of time (W)
The process by which electromagnetic energy, is emitted by an
object or a gas.
A piece of IR radiating equipment.
The current overall temperature measurement limitation of an
IR camera. Cameras can have several ranges. Expressed as
two blackbody temperatures that limit the current calibration.
A temperature which the ordinary measured values can be
compared with.
The amount of radiation reflected by an object relative to the
received radiation. A number between 0 and 1.
Relative humidity represents the ratio between the current water
vapour mass in the air and the maximum it may contain in satu-
ration conditions.
The areas that contain temperatures outside the present lev-
el/span settings are colored with the saturation colors. The sat-
uration colors contain an 'overflow' color and an 'underflow'
color. There is also a third red saturation color that marks every-
thing saturated by the detector indicating that the range should
probably be changed.
The interval of the temperature scale, usually expressed as a
signal value.
Amount of energy emitted from an object per unit of time, area
and wavelength (W/m
A value which is the result of a subtraction between two temper-
ature values.
The current overall temperature measurement limitation of an
IR camera. Cameras can have several ranges. Expressed as
two blackbody temperatures that limit the current calibration.
The way in which an IR image currently is displayed. Expressed
as two temperature values limiting the colors.
infrared image
2
/μm)
19 – Glossary
125