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. SENS
RC-SPC1K
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 (Face B)
3) Temperature Sensor (Face B)
Datasheet
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).
On the rear of the rain sensor there is a temperature sensor NTC with a nominal resistence value 1Kohm (25°C), it’s possible use this sensor to monitor the environment temperature. It’s possible to control the heater against particolar environment condition as frost and dump. With these 3 functions : - Measure the capacitance (Table 1) - Measure the environment temperature (Table 2) - Heater control (Table 3) It’s possible establish if it's raining or not.
Electrical Parameters
Capacity Value | 100pF ±10% |
R Value (heater) | 42 ohm ± 10% |
NTC Value | 1K ± 10% |
Heater Time
NTC characteristics
Capacitive change characteristics
Mechanical Dimensions
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