Overview
BF22 is a brand new product, which is equipped with special ASIC sensor chip, high-performance semiconductor silicon-based capacitive humidity sensor and a standard on-chip temperature sensor, it uses standard I2C output signal format. BF22 products have stable performance in high temperature and high humidity environment; At the same time, the product has great advantages in accuracy, response time and measurement range. Each sensor is strictly calibrated and tested before leaving the factory to ensure and meet the large-scale application of customers.
Key Features
- Fully calibrated
- Wide power supply voltage range, from 2.0V to 5.5V
- Digital output, standard I2C signal
- Quick response and strong anti-interference ability
- Excellent long-term stability under high humidity condition
Applications
- Home appliance fields: home appliance, humidity control, HVAC, dehumidifiers, smart thermostats, and room monitors etcs;
- Industrial fields: automobiles, testing equipment, and automatic control devices;
- Other fields: data loggers, weather stations, medical and other related temperature and humidity detection devices.
Technical Specifications
| Parameter | Condition | Min | Typical | Max | Unit |
| Resolution | Typical | – | 0.024 | – | %RH |
| Accuracy error1 | Typical | – | ±3 | Refer toFigure 1 | %RH |
| Repeatable | – | – | ±0.1 | – | %RH |
| Hysteresis | – | – | ±1.0 | – | %RH |
| Non-linear | – | – | <0.1 | – | %RH |
| Response time2 | τ63 % | – | <8 | – | s |
| Scope of work3 | – | 0 | – | 100 | %RH |
| Prolonged Drift4 | Normal | – | < 1 | – | %RH/yr |
