IST AG HYT 221 Digital humidity/temperature sensor

The HYT 221 – for critical application areas. The round stainless steel casing can be easily fitted into housing openings and can be sealed against the wall with the use of O-ring. In combination with the waterproof membrane filter, it results into an assembly that is splash water proof and enables a sealed housing construction while providing a high dynamic responsiveness.

Precisely calibrated, the HYT 221 delivers an accuracy of ±1.8 % rH and ±0.2 °C. Like all representatives of the HYGROCHIP family, the sensor combines the advantages of a precise, capacitive polymer humidity sensor with the high integration density and functionality of an ASIC. The signal processing integrated in the sensor completely processes the measured data and directly delivers the physical parameters of relative humidity and temperature over the I2C compatible interface as digital values. The module is precisely calibrated by the manufacturer and is therefore fully interchangeable without adjustment.

Both the linearity error as well as temperature drift are corrected “OnChip” through computation resulting in an outstanding accuracy over a wide range of application. Due to mechanical robustness, high chemical stability, dew formation resistance as well as an excellent long term stability, the typical areas of application are humidity measurement in the sauna, applications in outdoor areas or industrial applications in the field of drying systems.

• Measuring range 0 … 100 % rH, -40 … 125 °C
• Accuracy ±1.8% rH, Temperature ±0.2 °C
• Splash water proof with protection filter
• Waterproof membrane filter
• Precisely calibrated and temperature compensated
• Chemical resistant, dew formation resistant
• Mechanically robust
• Low Hysteresis, compensated Linearity error
• SIL-connections, plug-in type, RM 1.27mm
• I2C, address 0x28 or alternative address
• Dimensions 15.3 x 10.2 x 5.3 mm
• RoHS conformance