HTU21P 查看數據表（PDF） - Unspecified
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HTU21P Datasheet PDF : 21 Pages
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HTU21D(F) Sensor
Digital Relative Humidity sensor with Temperature output
Storage Conditions and Handling Instructions
It is recommended to store HTU21D(F) sensor in its original packaging at following conditions: Temperature
shall be in the range of -40°C – 125°C.
Temperature Effects
Relative humidity reading strongly depends on temperature. Therefore, it is
essential to keep humidity sensors at the same temperature as the air of which the
relative humidity is to be measured.
In case of testing or qualification the reference sensor and test sensor must show
equal temperature to allow for comparing humidity readings.
The HTU21D(F) sensor should be mounted in a way that prevents heat transfer
from electronic sensor or that keeps it as low as possible. Advice can be ventilation,
reduction of copper layers between the HTU21D(F) sensor and the rest of the PCB
or milling a slit into the PCB around the sensor (1mm minimum width).
Example of HTU21D(F) sensor mounting
with slits mills to minimize heat transfer
Materials Used for Sealing / Mounting
For sealing and gluing (use sparingly), use high filled epoxy for electronic packaging and silicone. For any
specific material please request to humidity.application@meas-spec.com.
Window must remain uncovered.
HPC199_3 HTU21D(F) Sensor Datasheet
www.meas-spec.com
7/21
October 2013
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