FXTH87EK116 incorrect pressure reading

[tedwu1]

Hi friend,

I am using FXTH87EK116. When the tire pressure is greater than 1400KPA, add 1 atmosphere. After a few hours, the measured pressure will become very low, even 0KPA. Then the pressure slowly comes back up. Is this an IC problem or my FW problem? How to solve it?

Thank you in advance.

Ted Wu

[TomasVaverka]

Hi Ted,

The FXTH87EK device is able to measure pressure up to 1500kPa. Above this pressure, the pressure compensation function returns overflow.

In order to understand what is happening, I would recommend to periodically transmit and log raw and compensated pressure, temperature and voltage values, along with the status returned by the reading and compensation functions.

BR, Tomas