Data Sheet

HYGROCHIP 2/3
DIGITAL HUMIDITY SENSOR HYT-939
Technical Data
Humidity Measurement
Humidity measuring
range
(1)
0 ... 100% rH
see Figure 3
Humidity accuracy
(2)
(Maximum tolerance)
±1.8% rH (10 ... 80% rH)
see Figure 1
Accuracy humidity 0 ..
10% RH (0 ... 50 ° C)
(Typical tolerance)
±(1% rF + 8% a
w
)
a
w
= rF / 100%
Hysterisis (50% rH) < ±1% rH
Humidity resolution 0.02% rH
Linearity error < ±1% rH
Response time t
63
< 10 sec with Sinter filter
Tk Residual error (50%
rH)
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°C (0 ... 60°C)
see Figure 2
Reproducibility ±0.1K
Response time t
63
< 10 sec with membrane
filter
Temperature resolution 0.015°C
Long term drift < 0.05K / a
Measuring principle PTAT (integrated)
Relative Humidity Accuracy
(1)
The maximum dew point is limited to 80°C.
(2)
The accuracy is tested at 23°C and 3.3V operating
voltage in the direction of rising humidity. The accuracy
does not include Tk-Residual error, residual linearity
error or hysterisis effect.
(3)
The repeatability is measured in the same direction
and does not consider the hysterisis effect
Temperature Measurement Accuracy