About longtermdrift of BMP581

[goldwing]

According to the data sheet, it says 10Pa for one year.

I recently purchased 60 BMP581 and observed them for 2 months, and they all moved by 0.15hPa (15Pa).

How can we prevent this drift from occurring?

Or will the drift be resolved if I continue to turn on the power?

Please guide me.

[BSTRobin]

Hi goldwing,

Thanks for your inquiry.
For your description "I recently purchased 60 BMP581 and observed them for 2 months, and they all moved by 0.15hPa (15Pa).", could we know how do you do the test? Do you have a reference device to get the pressure values of BMP581 and the reference device under the same conditions?

[goldwing]

Thank you for your reply.

The test method is comparative calibration with a standard machine.
The standard machine has no drift throughout the year.
The calibration range is 880hPa to 1040hPa.
The environment has the same temperature and humidity conditions. The height is also the same.