Immersion Temperature Sensors
Installation and Operation
Specifications subject to change without notice.
5 of 7
Catalog No. 11-808-632-01
#20907 –
2/20/19
Thermowell Installation (continued…)
Pipes less than 3 inches in diameter
T- Mount
Figure 7 shows how a 2” tee and a ½” to 2” bushing
allows a 2” thermowelll to measure the temperature of the
contents of a 2” water pipe.
Be sure to use a thread sealant on the outside threads of
the thermowell.
Corner Mount
Figure 8 shows how a pipe tee can be used in an elbow
application. A 2” tee and a ½” to 2” bushing allows a 4”
thermowell to measure the temperature of the contents of
a 2” water pipe.
NOTE
Temperatures in pipes as small as 1-1/4” may be
measured by this method. In small pipes, the diameter of
the thermowell may become a significant obstruction, so
be sure to check for proper flow rates after installation is
complete.
Figure 7:
Typical T-Mount
Figure 8:
Typical Corner Mount
Immersion Sensor Installation
Immersion probes come with a plastic fitting that
screws into the threads of the thermowell.
Pull the immersion probe away from the plastic fitting
until the probe is fullly extended. Insert the probe into
the thermowell until the plastic fittings come into contact
with the threads in the thermowell. Hand tighten the
immersion sensor snugly into the thermowell without
too much torque. The temperature probe slides back
into the enclosure as the sensor contacts the end of the
thermowell.
Make sure that the tip of the immersion sensor probe is
in good contact with the bottom of the thermowell by
pushing on the flaired end of the probe until the tip
bottoms out in the thermowell.
Figure 9:
Immersion Sensor Before Insertion
* As the immersion sensor is hand-threaded into the thermowell, the flair end of the
probe will be pushed into the enclosure as the probe tip bottoms out in the
thermowell. The probe can slide up to 1.6”. The Junction Box enclosure is shown
above but the process is the same for the other enclosure styles.
T-pipe fitting
Reducer
1/2 inch NPT
T-pipe fitting
Reducer
1/2 inch NPT
Length Per Order
*Sensor Slides
1.
Pull Sensor to
Extend Fully
2.
Insert
3.
Hand Tighten
