secretphysicist wrote:All thermocouples are K- type, not touching the oven, and temperatures should be between 50 and 150C, depending on time within the schedule.
Yes, the oven and the laptop are plugged into the same circuit, so when the power goes off, it affects both. Yes, it's an earthed power lead. But, it happens even when working in other locations - e.g. where the oven in on a different circuit, as per the example below.
The quirky thing is that on some fluctuations the channels don't all jump in the same direction. I've attached a really strong example in the pic - look at the segment between 3 hours and 3.45 - here the power was being switched on and off at the fuse box to fix the supply on a different circuit in the building. Ch 4, 5 and 6 do different things if you look closely.
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