Ultimaker Temp Sensor: Pt100?

[ataraxis 51]

Hi!

Some of us try to find an easy solution to measure how accurate the temperature sensor on our machines is.

Therefore i tried to measure the resistance of the PT100 with an Ohm-meter. The funny thing is, at about 22°C it shows me around 3Ohm - that's kinda weird since a real PT 100 should have 100 Ohm at 0°C as far as i know.

Am I missing something? Why isn't it like I expected? Is it really an Pt100 in the UMO or maybe something else?

[ultiarjan 1,223]

The thermocouple in an umo is not a pt100 ....

The um2 has a pt100. I guess but I'm not 100% sure therefore also the umo+ has a pt100 as it has the um2 electronics board.

[ataraxis 51]

Yeah right, according to a conversation on groups.google it's an K-type thermoelement. Thanks!