rain sensor MODEL MR 410 pages

Advantages Not sensitive for dust or dirt
Օ Long life
Heater included (inside sensor)
Օ Small size
4/20 mA and open collector output
Օ Fast response time Mierij Meteo >

Measurement principle Th is optical rain sensor has a new principleof precipitation detection. The MR 41 has infra -red/ red transmitters and an infrared/red receiver.Only changes on the glass surface of the sensor
are measured. For this reason the sensor is not
sensitive for dust or dirt. The output signal switches between 4 and 20 mA (open collector
output is also available). No precipitation is equal
to 4 mA and precipitation is equal to 20 mA.
When there is precipitation the open collector
output switches to GND (Ground). A heater is
mounted to prevent failure due to dew and to
ensure a fast response time at the end of a precipitation period. >
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