Operator’s Manual
M12 160x120 Thermal Imager Operator's Manual 31
storage temperature The lowest ambient temperature to the highest ambient temperature in which you can store
the Thermal Imager while it is not being used.
target The area in a thermal image in the center, dened by square corner markers on the display,
whose temperature is displayed in 0.1 degree resolution at the top of the display. The
temperature is the average of all the pixels contained within the brackets.
Thermal Imager Shorthand name for the M12 160x120 Thermal Imager.
thermal imager lens The main lens on the Thermal Imager that has the hinged lens cap. This lens focuses infrared
radiation (IR) on the thermal sensor. There is another, smaller lens for taking visual digital
images.
thermal mass Objects with low thermal mass revert to ambient temperature more quickly than objects with
low thermal mass. For example, a cast-iron engine block has higher thermal mass than an
aluminum one. Thermal mass and mass are not the same thing.
thermal radiation Infrared emission from a target area. Thermal radiation intensity infrared radiation drops off
predictably with distance. This is why xed-focus thermal imagers are less accurate than ones
you focus. Focusing tells the Thermal Imager how far away the target is, so the imager can do
the math to calculate the readings accordingly.
thermal sensitivity The smallest increment of temperature measurement resolved by the digital reading.
Equivalent to temperature resolution. (10 °C vs. 1 °C vs. 0.1 °C.)
thermal sensor Also called “detector,” or “sensor,” the component that detects temperatures throughout the
eld of view. The Thermal Imager’s detector is an uncooled microbolometer.
thermographic study Taking thermal images and interpreting them to check for problems, or to create a periodic
record of temperatures for maintenance records.