Humidity Sensor
AM2302 is an output calibrated digital signal humidity sensor. It applies exclusive digital-signal-collecting-technique and humidity sensing technology, assuring its reliability and stability. Its sensing elements is connected with 8-bit single-chip computer.
Every sensor of this model is temperature compensated and calibrated in accurate calibration chamber and the calibration-coefficient is saved in type of program in OTP memory, when the sensor is detecting, it will cite coefficient from memory.
Small size & low consumption & long transmission distance(100m) enable AM2302 to be suited in all kinds of harsh application occasions. Single-row packaged with four pins, making the connection very convenient.
Features and applications:
- High precision
- Capacitive type
- Full range temperature compensated
- Relative humidity and temperature measurement
- Calibrated digital signal
- Outstanding long-term stability
- Extra components not needed
- Long transmission distance, up to 100 meters
- Low power consumption
- 4 pins packaged and fully interchangeable
| Humidity detection range | 20 to 95% |
| Humidity detection accuracy | ± 3% (25 °C, 40 to 80%) |
| Power supply voltage | 3.3-5.5V DC |
| Operating voltage range | 85% to 110% of power supply voltage |
| Current consumption | 10 mA max. |
| Humidity output | 1 to 5 V (for humidity of 0% to 100%) Permissible load impedance: 100 kΩ min. (Use a 1:1 connection when connecting to an E5CC/E5EC/E5AC.) |
| Output signal | digital signal via 1-wire bus |
| Sensing element | Polymer humidity capacitor |
| Operating range | humidity 0-100%RH |
| Accuracy | humidity +-2%RH(Max +-5%RH) |
| Humidity hysteresis | +-0.3%RH |
| Long-term Stability | +-0.5%RH/year |