Getting almost same values for 2p5 to 10p

Sensirion / embedded-sps

Embedded i2c Driver for Sensirion Particulate Matter Sensors - Download the Zip Package from the Release Page

https://github.com/Sensirion/embedded-sps/releases

BSD 3-Clause "New" or "Revised" License

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Getting almost same values for 2p5 to 10p #40

Closed ffly90 closed 4 years ago

ffly90 commented 4 years ago

When measuring particles I receive almost the identical values for the sizes 2.5, 4 and 10. Is this because there are no additional particles of those sizes, or is this a problem with the sensor?

The same issue has been discussed here, but there could not be found a good explanation: https://github.com/paulvha/sps30/issues/3

Have you had similar experiences and/or do you have an explanation for the behaviour?

Thanks in advance!

abrauchli commented 4 years ago

I'm posting the reply in the linked and close this thread to avoid forking. Generally please refer to Sensirion support for information not related to the driver.