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Innovative High Temperature Fiber Optic Infrared Pyrometers
Sensor Location
21
4.6. Sensor Placement (
2-Color
Mode)
The following figure demonstrates the sensor placement under various conditions, where valid
2-Color temperature measurements are possible. Note, however, that if the sensor signal is
reduced more than 95% (including emissivity and obscuration of the target), the sensor
accuracy also degrades.
Figure 7: Sensor Placement in 2-Color Mode
Sighting hole smaller than the sensor’s
field of view
Emitted
energy
Dirty lens or dirty sighting window
Emitted
energy
Smoke, steam, dust, gas
in atmosphere
Emitted
energy
Target smaller than field of view
and/or moves or vibrates in and out of
field of view (e.g. wire)
Emitted
energy