Best posts made by zzing

I use a PT100 on my main printer, and I have just gotten a PT1000 (no amplifier board needed).

While a thermocouple might have faster temperature response, I like the PT100 and it is definitely not prone to breakage on a printer.

PT100 is calibrated to have 100 Ohms at 0 C, while a thermocouple has to be calibrated (think ice bath) against another already calibrated thermocouple - however it wouldn't hurt to confirm resistance on a PT100 either.

Thermocouples are prone to noise because the signal is a voltage signal and can change quickly.

An RTD (like PT100) can be affected by the length of wire because it can subtly increase resistance (hence why I want to try a PT1000 - precision piezo sells some) - although if they came with four wires you could actually compensate for the resistance - but alas they do not for printers.

So I have read that ATX style power supplies can be turned off by the RRF. Is it possible to wire an industrial power supply that must be turned on normally, but is latched in such a way that a signal could come from the duet board to turn off the power (thus release the latch).

I know there are power relays that might be applicable, but I don't think a regular switch would be appropriate with this setup.