E2218
Rev 14.05.2021
Sensor probe handling
The sensor probes HT-RP16 and HT-RP16H are equipped with a hydrophobic microporous
PTFE filter to protect the sensor from dust, dirt and water drops. The round filter is
snap-fitted and may be replaced if it gets strongly contaminated.
To replace the PTFE filter, carefully hook the filter near it’s edge with a small flat
screwdriver and pull it off. Place a new filter onto the sensor opening and press it to snap
into the groove.
Note! Never stab or press the filter near its center where the sensor is located, as this may
damage the sensor. Do not remove the filter as it may cause the device to show incorrect
values and/or break the sensor.
The recommended orientation of the sensor probe is vertical with the sensor tip pointing
downwards. This prevents possible accumulation of condensed water on the sensor
protection filter. The horizontal orientation is also suitable. Avoid upward position of the
sensor tip.
After replacing the sensor probe check if the M12 connector is securely tightened to
ensure appropriate electrical contact and protection.
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