Vaisala PTU300 Guide de l'utilisateur Page 122

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User's Guide ______________________________________________________________________
120 _________________________________________________________________ M210796EN-A
Changing the Sensor
The user can change the HUMICAP180 and HUMICAP180L sensors
1. Unscrew the filter from the probe head. See the instructions in
section Changing the Probe Filter on page 119.
2. Remove the damaged sensor and insert a new one. Handle the
new sensor by the plastic socket. DO NOT TOUCH THE
SENSOR PLATE.
3. After sensor change the humidity calibration must be made
according to the instructions, see section Relative Humidity
Adjustment After Sensor Change on page 134.
4. Screw a new filter on the probe head. When using the stainless
steel filter, take care to tighten the filter properly (recommended
force 130 Ncm).
0508-079
Figure 48 Changing the Sensor
Numbers refer to Figure 48 above:
1 = Pull out the sensor
2 = Plastic socket
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