Generating the measured values
14 Snow depth sensor SHM 31, V2.1
4. Generating the measured values
4.1. Measured values (curr, avg)
Factory setting: The current measured values are measured values averaged over 60 s. A new measurement
is performed internally every 10 s. So, for the current measured values, averages are taken and provided for
6 out of these 10 seconds.
The measured values labelled avg, min and max are output as averages over 10 minutes with the default
settings.
4.2. Normal mode
The snow depth sensor is switched on and off by connecting and disconnecting the power supply.
After the sensor is switched on, it will require a start-up time of a few seconds before communication is
possible. In the first few seconds after a restart, the sensor is ready to receive UMB commands over the
RS485 interface. This also applies if the user is using the SDI-12 protocol and ensures that it is always
possible to exit the SDI-12 mode in this way.
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