aem.eco
LAMBRECHT meteo
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AEM
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15189
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Function
The weighing precipitation sensor 15189 works with a low-friction mounted tipping bucket according to Joss-Tognini.
Errors that normally occur due to incomplete draining because of surface tension are automatically compensated
by the specific form of the tipping bucket. The tipping bucket can hold 2 cm³ (2 g) resp. 4 cm³ (4 g) of water. The
collecting surface of 200 cm² (WMO standard) means that one bucket charge is equivalent to a precipitation rate
of 0.1 mm resp. 0.2 mm per square meter. If the bucket is tipped, the reed contact that is integrated in the sensor will
be closed. This pulse output can be electrically scanned, remotely transmitted and recorded. A bounce-free signal
can be achieved by using the corresponding electrically connection. Otherwise the signal of the reed contact can be
used directly, not bounce-free, if this function will be carried out by an appropriate data logger (e. g. Ser[LOG]).
The precipitation sensor 15189 is mounted on a mast, whose outer diameter is 60 mm. For application in snowfall
regions the heater equipped model 15189 H ensures all year round measurement. Two separate controlled heating
circuits with lowest hysteresis are providing an optimal temperature at which snowing up of the sensor will normally
be prevented and evaporation from the heated surfaces will be minimized. The precipitation sensor 15189 is made
of weather-resistant aluminium and stainless steel. This ensures a long durability. These high-quality precipitation
sensors comply with the regulations WMO.
Dimensional drawing