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Long-term storage
If the sensor is not used over a prolonged period, perform the following
operations.
1. Detach the sensor cable from the transmitter.
2. Drain off the water from the sensor and clean it.
3. Store the unit away from direct sunlight.
As the packing will deteriorate over time, we recommend replacing the
maintenance parts every 3 years. For details, contact the dealer.
Overhaul
Calibration
The sensor is designed to be able to measure stably for a prolonged period
of time. In order to maintain the reliability of measurement, however,
calibration should be carried out at least once a year.