Chapter 4 _______________________________________________________________ Maintenance 
VAISALA ________________________________________________________________________ 39 
7.  Open the filter to expose the sensors. 
 
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Figure 27  Filter Removed 
8.  Pull out the old INTERCAP
®
 sensor, and insert the new one.  
 
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Figure 28  Sensors on HMS82/83 Models 
Vaisala INTERCAP® humidity sensor. 
Handle by the plastic frame. 
Temperature sensor. Do not touch or attempt to remove. 
 
9.  Insert the new filter. 
10.  Reassemble, remount, and reconnect the transmitter. 
11.  Power up the transmitter. 
12.  Verify that the transmitter now provides a valid humidity reading.