HYT 221 is a digital humidity element in a round stainless steel casing which can be easily fitted into housing openings and can be sealed against the wall with the use of an O-ring. In combination with the waterproof membrane filter, it results in an assembly that is splash waterproof and enables a sealed housing construction while providing high dynamic responsiveness.
**All new inquiries for these parts should contact IST directly via their Contact Us page or email
Like all products in the Hygrochip line, integrated signal processing, and I2C compatible interface is standard. Outstanding accuracy with on-chip calibration and excellent resistance to chemicals and dew formation is part of this model.
Features
- Measurement range of 0 to 100% rH, -40°C to 125°C
- Accuracy ±1.8% rH and ±0.2°C (HYT 271-H)
- I2C interface
- Splash waterproof with protection filter
- High chemical resistance
- Dew formation resistant
- Low operating voltage of 2.7 to 5.5V
- Miniature construction of 5 x 7 mm
- SIL-connections, plug-in type
- RoHS conformance
Technical Features
| Parameter | Value |
|---|---|
| Measuring Principle: | Capacitive polymer humidity sensor |
| Humidity Range: | 0-100% relative humidity |
| Humidity Accuracy: |
±1.8% rH |
| Humidity Resolution: | 0.02% rH |
| Temperature Measurement Range: | -40 to +125°C |
| Temperature Accuracy: | ±0.2°C |
| Temperature Resolution | 0.015°C |
| Hysteresis: | ±1% rh |
| Response Time: | less than 12 sec |
| Digital Interface: | I2C, Address0x28 Alternative address |
| Dimensions: | 15.3 x 10.2 x 5.3 mm |
| Connection: | SIL, plug-in type, RM 1.27 mm |
| Meets RoHS conformity: | Yes |
Applications
- Meteorology
- Industrial drying systems
- Medical devices
- Aviation
- Extreme sports equipment