RayTek MARATHON MR - Sensor Placement (2-Color Mode)

Installation
20 Rev. E2 04/2011 Marathon MR
5.1.3 Sensor Placement (2-Color Mode)
The following figure shows head placement under various conditions where two-color temperature
measurements can be taken. 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 10: Sensor Placement in 2-Color Mode
Emitted
energy
Emitted
energy
Sighting hole smaller than the
sensor’s field of view
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
Smoke, steam, dust,
gas in atmosphere
Dirty lens or dirty sighting window