Vaisala HMDW80 - Manual (Page 35)

Chapter 4 _______________________________________________________________ Maintenance
VAISALA ________________________________________________________________________ 33
CHAPTER 4
MAINTENANCE
This chapter provides information that is needed in basic maintenance of
HMDW80 series.
Cleaning
The body of the transmitter can be cleaned by wiping with a moistened
lint-free cloth. Do not use cleaning agents or solvents, or blow
pressurized air into the transmitter housing or on the filter.
NOTE Do not attempt to clean contaminated INTERCAP ® sensors or filters.
Instead, replace them with new parts. Filters and sensors can be
purchased from Vaisala. For order codes, see section Spare Parts and
Accessories on page 48.
Calibration
You can verify the performance of your HMDW80 series transmitter by
comparing its reading with the reading from a portable reference
instrument such as the HM70 Hand-Held Humidity and Temperature
Meter. For operating instructions, refer to the documentation of your
reference instrument.
If the comparison indicates that the reading from the transmitter is not
within specification, the transmitter may need to have its filter and sensor
replaced.