PT100 Module (External Sensor)
24 Administrator Guide v 2.2 Thermo Scientific Smart-Vue
®
Wireless Monitoring Solution
CAUTION: We do not recommend installing the sensor through the door
gasket on a ULT freezer. This leads to excessive ice build-up and possible
door damage as well as longer compressor run times that may result in other
mechanical problems.
The orange cable, which supports temperatures from -200°C to + 50°C,
may be placed inside the freezer. Make sure you attach the sensor using the
provided cable-ties and reseal any openings you may have unsealed to insert
the sensor using permagum sealant.
Figure 10. Sample PT100 (-100°C to +150°C) for ULT freezer
4.3.5 PT100 (-200°C to +50°C) PT100 sensors for Thermo Scientific LN
2
/cryogenic tanks must be
mounted, when applicable, in close proximity to the unit display sensor.
To avoid temperature measurement disappearances, Thermo Scientific
recommends mounting the sensor at the same height as the display sensor.
As an example, some freezers have an access panel on the back of the unit in
which you may route the sensor cable up the back wall. Place the cable
under the tank gasket utilizing the notch at the 12 o’clock position. We
recommend the installation of permagum sealant where the cable passes
through the notch.
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