Is it normal for PT1000 to read slightly high at room temp?

[supro47]

First time using a PT1000, so I don't know what to expect. I have a v1 rapido plus plugged into an sb2040 v1 with the jumper on and my settings:

sensor_pin: SB2040v1:TH0
sensor_type: PT1000 
pullup_resistor: 1000

The thermistor is reading about 5C higher than I expect at room temp. It makes me a little nervous to start the heater though, because I don't know if it just reads slightly high, or if the problem is logarithmic and setting the temp to 240 will cause it to go up to 500 or something.

 

[Crashdown]

Mine reads about 2.5C above my other thermistors that all agree very closely. Its been working fine for me for hundreds of hours.

I wish I could tell you something more definative but I think its just a feature of the SB2040

 

[jules]

Hy there,
you have to plug it in the MAX31865 4 pin imput and set the jumpers for the number of pins , for the code you can see here:

BBT SB2209 PT1000 problem

Hello, I recently built a Voron 2.4 350mm from a kit. I added some upgrades as I was building it, including a Voron TAP a BigTreeTech (BTT) SKR SB2209 with CANbus. I also upgraded to a stealthburner extruder and used an old Dragon hotend. It's been running okay, but I feel the hotend has been...

forum.vorondesign.com

The pins are set for the RPI2040 version, you have to adapt it for your can setup.

Cheers!