Overview
The NF-B413 type humidity sensor is constructed from high-molecular humidity-sensitive materials. When the humidity in the environment increases, the high-molecular material swells. This swelling leads to an increase in the internal free volume, resulting in more carriers. At the same time, the activation energy of the counterions of the high-molecular polyelectrolyte decreases, and the mobility increases, causing the impedance of the material to drop. Conversely, when the environmental humidity decreases, water molecules escape from the ionic polymer, increasing the resistance of the material. By measuring the change in its impedance, the relative humidity in the environment can be accurately monitored.
Key Features
- Wide Humidity Range: Capable of detecting humidity within a broad range from 10% to 90% RH, making it suitable for various environments.
- Short Response Time: With a quick response, it can detect humidity changes promptly, with a moisture absorption time of ≤20s and a dehumidification time of ≤30s.
- Small Hysteresis: The hysteresis is only ±1%RH, ensuring more accurate and consistent humidity measurements.
- Simple Manufacturing: Its manufacturing process is straightforward, which also contributes to its low cost.
- Easy Integration: Designed to be easily integrated into different systems and devices.
- Low Cost: Offers an economical solution without sacrificing performance.
Applications
As an important chemical sensor, the NF-B413 humidity sensor finds extensive applications. In warehouse storage, it helps maintain the appropriate humidity level to protect stored goods. In industrial production, it is crucial for ensuring the quality of products by controlling the humidity in the production environment. For process control, it provides real-time humidity data for accurate process adjustment. In environmental monitoring, it contributes to understanding the overall environmental conditions. In household appliances, it can be integrated to optimize the performance of devices. Additionally, it plays a significant role in meteorological applications for accurate weather forecasting.
Technical Specifications
| Parameter | Details |
| Temperature – Working Range | 0~60°C |
| Humidity – Working Range | 10~90%RH |
| Temperature – Storage Range | 10~40°C |
| Humidity – Storage Range | ≤60%RH |
| Detection Range | 10-90%RH(@ 0-60°C) |
| Rated Voltage | 1.5V AC(MAX,Sine Wave) |
| Rated Power | 0.2mW(MAX,Sine Wave) |
| Working Frequency | 500Hz~2kHz |
| Characteristic Impedance & Range | 31 (20~45) KΩ (60%RH, 25°C) |
| Temperature Characteristic | ≤0.5%RH/°C |
| Hysteresis | ±1%RH |
| Response Time | Moisture Absorption: ≤20s; Dehumidification: ≤30s |
| Water Resistance | After being immersed for 10min and then dried, the humidity change is less than 2%. After being immersed for 30min and then dried, the humidity change is less than 5% |
| Stability | 2%RH/Year |
| Detection Accuracy | 5%RH |
| Service Life | 3-5 Years |
