Capacitive thick film rain sensor - Import export

RC-SPC1K is an thick film technology rain sensor. This device is realized in Allumina (AL2O3) substrate, this material is endowed a big reliability from an electrical thermal point of view. The sensor consists of three parts : 1) Capacitive sensor (Face A) 2) Heater generator 3) Temperature Sensor The Face A is the sensitivity area (capacitiver sensor) this area is exposted to natural agent (rain); In dry condition the value of the capacitor is nominal 100pF, In presence of the rain the capacitance goes to high valued respect the dry contidion; The ratio changing is over 420%, in the table N.1 you can verify the capacitance change characteristics. On Face B is present the heating circuit the temperature sensor (NTC component) and the connection interface (six pads).