Thank you. I will try this next and post the results.
Thermocouples #1 and #2 are in single 10-gallon tanks that are part of 2 separate series flow loop systems (you can sort of see how the systems are set up in the 2nd and 3rd pictures of my 4 Aug 21 13:43 post). Both of these systems are...
Thank you all for the replies.
I recorded some new data with the setup shown in my previous post. Unfortunately, the box did not remove the noise.
I also recorded some data using an identical datalogger in an un-air-conditioned warehouse, and compared it to the original data from the...
I have insulated the logger in a cardboard box with packing paper. The box isn't large, but if insufficient ambient temperature compensation is the culprit, I should at least get a reduction in the noise, if not outright removal, correct?
See pictures of the system below.
All water is saltwater...
@itsmoked
What size are the aquariums? Two are 10gal (38L) and one is ~50 gallons (200L). The fourth probe is in ambient air.
Residential or commercial? Commercial.
Town location? Melbourne, FL (east coast, south of Cape Canaveral)
@waross
Is the data logger temperature compensated? I don't...
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...
