CAPACITIVE RAIN SENSOR KEMO M152K
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CAPACITIVE RAIN SENSOR
KEMO M152K 4024028031538
A relay connects if the completely insulated sensor plate gets wet (e.g. raindrops). In contrast to rain detectors with a metallic sensor, this sensor functions capacitively. That means it also switches when getting into contact with distilled water (completely clean rain). Skylights may then be closed with it, canvas blinds may be pulled in or rain is just indicated. 2 installed LEDs indicate the function. The sensitivity is adjustable.
Technical data for Kemo M152K:
- Operating voltage: 12 V/DC
- Current consumption max.: approx. 130 mA
- Relay contact: 1 x ON, maximum load 25V 2.5 A
- Sensor heating: automatically in case of contact with rain
- Light-emitting diode 1: indication that the rain sensor works
- Light-emitting diode 2: indication that rain is reported and the relay has switched on
- Duty cycle of the relay: as long as the sensor is wet
- Sensitivity: adjustable
- Active sensor surface: approx. 26 x 32 mm
- Overall dimensions: approx. 65 x 45 x 36 mm
Assembly instructions: The rain sensor has bores in each edge of the bottom. By means of these 4 holes it may be screwed on a metal angle, a sun blind or the like. Mounting has to be done in such a manner that the sensor surface is slightly inclined towards the points of the sensor surface enabling the water to flow off and preventing the water from staying on the sensor surface. The connecting cable will be led into a watertight switching outlet and wired up there. Please use a stabilised 12 V-power supply with a power of > 150 mA as current supply. The relay contact in the module may only be loaded up to 25 V and 2.5 amperes at maximum. In case you wish to control higher loads or larger voltages (e.g. 230 V~ motors), you have to interpose another relay approved for this breaking capacity
Setting into operation: After switching on the operating voltage of 12 V, the installed LED 1 lights up. If you put some drops of water on the sensor surface now, LED 2 lights up and the relay switches on. At the same time a sensor heating switches on which shall cause an accelerated drying of the sensor surface. This heating has a power of approx. 1 W and after a certain time it increases the temperature of the sensor surface by some degree Celsius compared to the ambient temperature.
Maintenance: Depending on the degree of soiling, the sensor should be cleaned regularly using a damped cloth. Please do not use any scratching cleaning agents
