16 - Maintenance
Maintenance
Battery
When the battery is about to die (reported state below 20%), replace it:
•
Open the measurement module as described on page 6.
•
Replace the battery with a new battery, according to the type marked on the circuit board. Note
the polarity as marked on the circuit board.
•
Assemble the device.
•
Properly dispose of the used battery observing the local regulations.
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
The nSens model is an exception. As the calibration data is stored in the nSens probe, it is sufficient to
recalibrate the probe only. However for replacing the battery, it may be convenient to send the
measurement module to be serviced too.
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 models. 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 measurements and radio
transmissions and store the halves in a dry place. For longer storage, remove the battery.
