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  1. A. Ocellaris

    How to remove periodic noise in temperature logger?

    I am using a 4-channel thermologger (AZ Instruments model #88598) that uses K-type thermocouples. The data is fine for about half of the day, but between about 8pm and 9am (overnight), all 4 channels rise and fall in a sine pattern with a period of about 40 minutes and an amplitude of ~5 degrees...

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