Polymer humidity sensor (humidity sensor)
The product is a new type of humidity sensitive element made of polymer humidity sensitive material. Its working mechanism is that with the increase of humidity of polymer humidity sensitive material, polymer material will swell, electrolyte mobility will increase, and material impedance will decrease. On the contrary, when the ambient humidity changes, the water molecules are removed from the ionic polymer, which increases the resistance of the material. By measuring the change of its impedance, the relative humidity in the environment can be monitored.
The product has the advantages of wide measuring range, small wet lag, small size, low cost, reliable and stable performance, moisture resistance and long life.
Characteristic impedance & Range
| Temperature | humidity | |
| Operating range | 0-60℃ | 20-90%RH |
| Storage range | -25~70℃ | ≤90%RH(non-condensation) |
| Detection range | 10 ~ 90%RH (0 ~ 60°C) | |
| Rated voltage | 1.5V AC(MAX, sine wave) | |
| Rated power | 0.2mW(MAX, sine wave) | |
| Operating power | 500 ~ 2khz | |
| 31(20~50)KΩ (60%RH,25°C) | ||
| Humidity | ≤0.5%RH/°C | |
| Wet hysteresis | ±2%RH | |
Stability
| Response time Hygroscopic, | Hygroscopic,≤30s、dehumidification ≤40s | |
| 2%RH/年 | ||
| Detection accuracy | 3%RH | |
