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AHT21 Datasheet PDF

ASAIR AHT21

AHT21 is equipped with a newly designed ASIC dedicated chip, an improved MEMS semiconductor capacitive humidity sensor element and a standard on-chip temperature sensor element. Its performance has been greatly improved or even exceeded the reliability level of the previous generation of sensors. Each sensor is calibrated and tested, and the product lot number is printed on the surface of the product.
Part No. AHT21
Datasheet AHT21 Download
Manufacturer ASAIR
Description Humidity and Temperature Sensor
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AHT21 datasheet page 1 preview

DESCRIPTION

HVAC, dehumidifier, testing and inspection equipment, consumer products, automobiles, automatic control, data loggers, weather stations, home appliances, humidity control, medical and other related temperature and humidity detection and control. Figure 1. AHT21 Sensor Package Diagram (Unit: mm Tolerance: ±0.1 mm). Version:V1.0 —— May 2021 1 / 16 2 Sensor Specifications Relative Humidity Parameter resolution Accuracy error1 repeatable hysteresis nonlinear Response time2 Scope of work Prolonged Drift4 condition Typical Typical max - - τ 63% Extended3 - Table 1. Humidity characteristics table. Temperature Parameter resolution Accuracy Error1 repeatable hysteresis Response time6 Scope of work Prolonged Drift condition Typical Typical max τ 63% Extended3 - Table 2. Temperature Characteristic table min typical - 0.024 - ±2 See Figure 2 - ±0.1 - ±1 - <0.1 - 8 0 - - <1 max unit - %RH - %RH - %RH - %RH - %RH - %RH - s 100 %RH - %RH /yr min typical max unit - 0.01 - ℃ - ±0.3 - ℃ See Figure 3 - ℃ - ±0.1 - ℃ - ±0.1 - ℃ 5 30 S -40 - 120 ℃ - <0.1 - ℃/yr .
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