HYT 271 Ist Innovative Sensor

HYGROCHIP 1/3 DIGITAL HUMIDITY SENSOR HYT-271 Characteristic Features The module is precisely calibrated by the manufac- Measuring range 0 100% rH, -40 125C turer and is therefore fully interchangeable without Low drift adjustment. Both the linearity error as well as tem- Stable at high humidity perature drift are corrected OnChip through com- 2 putation resulting in an outstanding accuracy over a I C protocol for humidity and temperature wide range of applications. The high chemical re- (address 0x28 or alternative address) sistance, dew formation resistant design and an Accuracy 1.8% rH, 0.2C excellent long-term stability speaks for itself. Temperature compensated Further variants and the full spectrum of the Typical Areas of Application HYGROCHIP product series can be found at: HYGROCHIP 2/3 DIGITAL HUMIDITY SENSOR HYT-271 Technical Data Relative Humidity Accuracy Humidity Measurement Humidity measuring 0 ... 100% rH (1) range see Figure 3 (2) Humidity accuracy 1.8% rH (0 ... 80% rH) see Figure 1 (Maximum tolerance) Accuracy humidity 0 .. (1% rF + 8% a ) w 10% RH (0 ... 50 C) (Typical tolerance) a = rF / 100% w (3) Reproducibility 0.2% rH Hysterisis < 1% rH Humidity resolution 0.03% rH (1) The maximum dew point is limited to 80C. Linearity error < 1% rH (2) Response time t < 4 sec 63 The accuracy is tested at 23C and 3.3V operating voltage in the direction of rising humidity. The accuracy Tk Residual error 0.05% rH / K (0 ... 60C) does not include Tk-Residual error, residual linearity Long term drift < 0.5% rH / a error or hysterisis effect. Measuring principle Capacitive polymer (3) The repeatability is measured in the same direction humidity sensor and does not consider the hysterisis effect. Temperature Measurement Temperature Measurement Accuracy Temperature measuring - 40 ... +125C range Temperature accuracy 0.2K (0 ... 60C) see Figure 2 Reproducibility 0.1K Temperature resolution 0.015C Response time t < 5 sec 63 Long term drift < 0.05K / a Measuring principle PTAT (integrated)