Data Sheet

HYGROCHIP 2/3
DIGITAL HUMIDITY SENSOR
HYT-221
All mechanical dimensions are valid at 25°C ambient temperature, if not differently indicated.  All data except the mechanical dimensions only have information purposes and are not to be
understood as assured characteristics.  Technical changes without previous announcement as well as mistakes reserve.  The information on this data sheet was examined carefully and will be
accepted as correct; No liability in case of mistakes.  Load with extreme values during a longer period can affect the reliability.
Released 09/2011 Rights reserved for change in technical data!
Technical data
Humidity measurement
Humidity measuring
range
(3)
0 ... 100% rH
see Figure 3
Humidity accuracy
(1)
±1.8% rH (0 ... 80% rH)
see Figure 1
Reproducibility
(2)
±0.2% rH
Hysteresis < ±1% rH
Humidity resolution 0.02% rH
Linearity error < ±1% rH
Response time t
63
< 12 sec with membrane
filter
Tk Residual error 0.05% rH / K (0 ... 60 °C)
Long term drift < 0.5 % rH / a
Measuring principle Capacitive polymer
humidity sensor
Temperature measurement
Temperature measuring
range
- 40 ... +125 °C
Temperature accuracy ±0.2 K (0 ... 60 °C)
see Figure 2
Reproducibility ±0.1 K
Temperature resolution 0.015 °C
Response time t
63
< 12 sec with filter
Long term drift < 0.05 K / a
Measuring principle PTA (integrated)
Relative humidity accuracy
(1)
The accuracy is tested at 23°C and 3.3 V operating
voltage in the direction of rising humidity. The accuracy
does not include Tk-Residual error, residual linearity
error or Hysteresis effect.
(2)
The repeatability is measured in the same direction
and does not consider the Hysteresis effect.
(3)
The maximum dew point is brought down to 80°C.
Temperature measurement
accuracy