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The Universal Sensor 082 is designed to mount on a pipe or in a temperature
immersion well. The sensor should be placed downstream of a pump or after
an elbow or similar fitting. This is especially important if large-diameter pipes
are used as the thermal stratification within the pipe can result in erroneous
sensor readings. Proper sensor location requires that the fluid is thoroughly
mixed within the pipe before it reaches the sensor.
Strapped to Pipe
The Universal Sensor can be strapped directly to the pipe using the cable tie
provided. Insulation should be placed around the sensor to reduce the effect
of air currents on the sensor measurement.
Mounting the Boiler and System Sensors
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Mounting the Mix Supply Sensor
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The mix supply sensor is used when operating a mixing valve or a variable
speed injection pump is installed.
• If applicable, connect the mix supply sensor to terminals 14 and 15.
Mounting the Boiler Sensor
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The boiler sensor is used when operating a boiler.
• If applicable, connect the boiler sensor to terminals 16 and 17.
Bottom of
Enclosure 080
Universal
Sensor
Cable Tie
Sensor Well
Retaining
Clip
Universal
Sensor
Immersion Well
If a Universal Sensor is mounted onto 1" (25 mm) diameter L type copper pipe,
there is approximately an 8 second delay between a sudden change in water
temperature and the time the sensor measures the temperature change. This
delay increases considerably when mild steel (black iron) pipe is used. In general,
it is recommended that a temperature well be used for steel pipe of diameter
greater than 1-1/4" (32 mm). Temperature wells are also recommended when
large diameter pipes are used and fluid stratification is present.
Conduit Connection
The Universal Sensor and Universal Sensor Enclosure 080 (sold separately) are
specifically designed to mount onto a 3/8" (10 mm) ID temperature well that is
supplied with an end groove. To install the well, plumb a tee into the pipe and fix
the well into the tee. The 080 enclosure has a 7/8" (22 mm) back knockout that
must be removed and fitted over the temperature well. The universal sensor is
then inserted into the well and the retaining clip supplied with the enclosure is
snapped onto the well end groove. If the well has a threaded end, the installer
must supply a standard threaded conduit retaining ring. The two wires from the
sensor are connected to the terminal block provided in the enclosure. The other
side of the terminal block is used to connect wires from the control.
Com
16
Boil
17
Mix
15
Sup
Com
14
