40 • Temperature Sensors 026-1701 Rev 0 01-05-98
Outside (Ambient) Temperature Sensor
The outside or ambient temperature sensor should be
located on the north side of the building (for locations in the
northern hemisphere), preferably under an eave to prevent
sun-heated air from affecting the temperature at the sensor.
For locations in the southern hemisphere, the temperature
sensor should be mounted on the south side of a building in
a similar fashion.
The temperature sensor may be mounted using a rub-
ber-lined tubing clamp. CPC also offers an aluminum cov-
er and clamp which may be mounted as shown in Figure
29 (fasteners are not provided).
Temperature Probe for Duct and Walk-In
Box
The 12-inch insertion temperature probe may be used to
monitor temperature in either the supply or return air ducts
of the AHU or RTU.
The probe may be mounted in any orientation within
the duct and should be secured using self-tapping screws.
A 0.250” diameter hole is required for the probe. Figure 30
shows the installation of the insertion probe (self-tapping
screws are not provided).
Insertion and Immersion Probes
The insertion and immersion temperature probes may
be used to monitor temperature. Insertion probes are for use
in ducts and are not to be used with liquids. The immersion
probe is designed to be used in liquids and comes with an
extra sheath.
Drill a hole to accommodate the insertion or immersion
probe’s sheath (tap if necessary). After creating the hole for
the probe or sheath, screw the insertion probe or sheath di-
rectly into the hole that was created.
After creating the hole for the sheath, screw the sheath
into the hole. Be sure that a water tight seal is made for the
Figure 28-Inside Temperature Sensor Mounting
Figure 29-Outside Temperature Sensor with Cover and Clamp
Figure 30-12-Inch Insertion Probe Mounting
Figure 31-12-Inch Insertion Probe Mounting
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