Hello!
We used your company's HDC1080 to produce a total of 80 sets of thermometer and hygrometer. The factory was tested normally and sent to customers in early 2020. At the end of 2021, the customer fed back that the humidity measurement value of some thermohygrometers was too large, and the displayed value was 8% - 12% larger than the average value of the standard meter. For example, the standard table shows 55%, and our table shows 65%. The customer returned 8 thermohygrometers to our factory at the end of 2021. After the test, we confirmed that the humidity measurement was too large. We carefully reviewed and read the hdc1080 manual and relevant materials, and found no abnormality in use. We now have the following questions and look forward to getting help.
1: Is there any way to restore the normal accuracy of the sensor after the measured value is too large?
2:HDC1080 data sheet says that the chip has self heating function. Is the self heating function used for restoring accuracy when the measured value is too large?
3: If the self heating function is used to bake the moisture of the sensor itself, does the long-term opening of this self heating function have any impact on the measurement. (we don't turn on the self heating function now)
Looking forward to your reply, thank you!
