Overview
The NF-B313 type humidity sensor is made from high-molecular humidity-sensitive materials. When the environmental humidity rises, the high-molecular material experiences swelling. This swelling leads to an expansion of the internal free volume, increasing the number of carriers. Simultaneously, the activation energy of the counterions in the high-molecular polyelectrolyte decreases, enhancing their mobility, and causing the impedance of the material to decrease. On the contrary, when the environmental humidity decreases, water molecules escape from the ionic polymer, increasing the resistance of the material. By measuring these impedance changes, the relative humidity in the environment can be accurately monitored.
Key Features
- Broad Humidity Range: It can detect humidity levels within a wide spectrum from 10% to 90% RH, making it adaptable to diverse environmental conditions.
- Rapid Response: Boasts a short response time, with moisture absorption taking ≤20s and dehumidification ≤30s, enabling prompt detection of humidity changes.
- Minimal Hysteresis: The hysteresis is only ±1%RH, ensuring consistent and accurate humidity measurements.
- Simple Manufacturing: Its manufacturing process is uncomplicated, which also contributes to its affordability.
- Easy Integration: Designed to be effortlessly integrated into various systems and devices.
- Low Cost: Offers an economical solution while maintaining good performance.
Applications
As a vital chemical sensor, the NF-B313 humidity sensor has extensive applications. In warehouse storage, it helps maintain the proper humidity level to safeguard stored items. In industrial production settings, it ensures product quality by controlling the humidity in the production environment. For process control purposes, it supplies real-time humidity data for precise process adjustments. In environmental monitoring, it plays a crucial role in assessing overall environmental conditions. In household appliances, it can be integrated to optimize device performance. Moreover, it’s valuable in meteorological applications for accurate weather predictions.
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 immersion for 10 minutes and subsequent drying, the humidity change is less than 2%. After immersion for 30 minutes and drying, the humidity change is less than 5% |
| Stability | 2%RH/Year |
| Detection Accuracy | 5%RH |
| Service Life | 3-5 Years |
