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IRTS-P Precision Infrared Temperature Sensor
3. Installation
2
The field of view for infrared sensors is calculated based on the geometry of
the sensor and lens. However, optical and atmospheric scatter and unwanted
reflections from outside the field of view may influence the measurement.
Under typical conditions, 80 to 90 percent of the IR signal is from the field of
view and 10 to 20 percent is from the area surrounding the field of view. If the
target surface is small, for example a single leaf, try to mount the sensor close
enough that the surface extends beyond the field of view.
To obtain the desired view of the canopy or surface of interest, the IRTS-P is
often mounted separately from a met station tower. A hole threaded for a
standard tripod camera mount screw (1/4 inch diameter; 20 threads per inch)
can be used to mount the sensor to a user-supplied support.
The IRTS-P can be mounted to a Campbell Scientific tripod or tower with the
UT018 Crossarm (Figure 3-1.) A mounting kit (Stainless steel bolt, 2 washers,
and 2 nuts PN 14475) is included with the IRTS-P that can be used to attach
the sensor to the crossarm (Figure 3-2.)
FIGURE 3-1. IRTS-P on UT018 Crossarm
FIGURE 3-2. Mounting IRTS-P to UT018 Crossarm
Tighten against sensor to fix
angle of sensor.
Nut with two lock washers
attaching bolt to the arm.
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