Vaisala WXT520 Guide de l'utilisateur télécharger pdf (Page 30)

User’s Guide ______________________________________________________________________

28 __________________________________________________________________ M210906EN-C

The sensor is also capable of distinguishing hails from raindrops. The

measured hail parameters are cumulative amount of hails, current and

peak hail intensity and the duration of a hail shower.

The precipitation sensor operates in the following four modes:

- Precipitation Start/End mode:

Transmitter sends automatically a precipitation message 10

seconds after the recognition of the first drop. The messages are

sent continuously as the precipitation proceeds and stopped when

the precipitation ends.

- Tipping bucket mode:

This mode emulates tipping bucket type precipitation sensors.

Transmitter sends automatically a precipitation message when the

counter detects one unit increment (0.1 mm/0.01 in).

- Time mode:

Transmitter sends automatically a precipitation message in the

update intervals defined by the user.

- Polled mode:

Transmitter sends a precipitation message whenever requested by

the user.

More information about the precipitation sensor operation modes can be

found in section Precipitation Sensor on page 117.

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Vaisala WXT520 Guide de l'utilisateur Page 30