14
Maintenance
Battery
The measurement module is powered with a 3.6V Lithium Thionyl battery pack. The pack should not be
replaced by the user.
Recalibration
It is recommended to recalibrate the measurement module every two years. Detach the measurement
module and send it for recalibration. Alternatively obtain a recalibrated module, exchange it to the
radio module, and send the old module for recalibration. Normally the recalibration includes replacing
the battery.
The calibration certificate for the measurement module can be downloaded from www.nokeval.com.
The nSens module is an exception. As the calibration data is stored in the nSens probe, it is sufficient to
recalibrate the probe only.
Cleaning
The enclosure exterior can be wiped with a damp cloth soaked in soapy water or isopropyl alcohol,
except that it is not allowed to wipe the humidity probes of the T-RH and nSens modules. The filters of
the humidity probes can be manually screwed off, cleaned, dried, and reattached.
Storage
If the device is not used for a while, detach the modules to stop the radio transmissions and store the
halves in a dry place. For longer storage, remove the battery.
