Datasheet

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Version:V1.0 —— May 2021
DHT20 Data Sheet
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3 Expansion Performance
3.1 Operating Conditions
The performance of the sensor is stable within the recommended working condition shown in figure 4. Long-term
exposure to the condition that outside of the normal range of conditions, especially humidity is over 80%, may
cause the output signal temporary drift (drift + 3% RH after 60 hours). After returning to the normal working
condition, the sensor will slowly recover to the calibration status. Refer to "Recovery Processing" in section 4.3 to
accelerate the recovery process. Long-term operating under the abnormal conditions will accelerate the aging of
the sensor.
Figure 4. Working conditions
3.2 RH Accuracy at Different Temperatures
Figure 2 defines the RH accuracy at 25°C, and Figure 5 shows the typical humidity error for other temperature
ranges.
Figure 5. The typical error of humidity in the range of 0~80°C, unit: (%RH)
Please note: The above error is the typical error (excluding hysteresis) of the reference instrument test with a high-precision dew
point meter.