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Appendix J
J.1 Accuracy
Figure J.1
RH Accuracy Chart
Accuracies are tested at Manufacture's Outgoing Quality Control at 25°C (77°F) and 3.3V.
Values exclude hysteresis and non-linearity, and is only applicable to noncondensing
environments.
J.2 Operating Conditions
Sensor works stable within
recommended normal range – see
Figure. Long term exposures to
conditions outside normal range,
especially at humidity >80%RH,
may temporarily offset the RH
signal (+3 %RH after 60h). After
return to normal range it will slowly
return towards calibration state by
itself. See Section J.4
"Reconditioning Procedure" to
accelerate eliminating the offset.
Prolonged exposure to extreme
conditions may accelerate ageing.
J.3 Storage Conditions and Handling Instructions
It is of great importance to understand that a humidity sensor is not a normal electronic
component and needs to be handled with care.
Chemical vapors at high concentration in combination with long exposure times may offset
the sensor reading. For these reasons it is recommended to store the sensors in original
packaging including the sealed ESD bag at following conditions: Temperature shall be in the
range of 10°C – 50°C (0 – 80°C for limited time) and humidity at 20 – 60%RH (sensors that
are not stored in ESD bags). For sensors that have been removed from the original
packaging we recommend to store them in ESD bags made of PE-HD8.
In manufacturing and transport the sensors shall be prevented of high concentration of
chemical solvents and long exposure times. Out-gassing of glues, adhesive tapes and
stickers or out-gassing packaging material such as bubble foils, foams, etc. shall be avoided.
Manufacturing area shall be well ventilated.
Sensor Information
69
Figure J.2
Temperature Accuracy Chart
Figure J.3 Normal Range
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