Vaisala SHM40 - Manual (Page 57)

Chapter 6 ___________________________________________________________ Troubleshooting
VAISALA _______________________________________________________________________ 55
CHAPTER 6
TROUBLESHOOTING
This chapter describes common problems, their probable causes and
remedies, and provides contact information for technical support.
Avoid Condensation and Rain
If the humidity sensor element on the probe becomes wet, the probe
cannot measure until the sensor is dry again. Avoid rain and conditions
where condensation can form on the sensor.
Do not use the transport protection cap if the probe is wet, since it will
prevent the probe from drying.
CAUTION Do not touch the sensor or blow on it to dry it out.