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    PT100 Sensor on thermocouple daughter board ?

    Duet Hardware and wiring
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    • EricD
      EricD last edited by

      Hello all,
      Is PT100 sensor can be connected on a thermocouple daughter board ?
      I am afraid not but I ask the question 😉 .
      I have only the thermocouple daughter board on stock yet (and it is difficult to order something with this f...ing virus).
      Stay safe,
      Eric

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      • dc42
        dc42 administrators last edited by

        No, a PT100 sensor cannot be used with a thermocouple board. Many of our distributors have stocks of the PT100 board.

        Duet WiFi hardware designer and firmware engineer
        Please do not ask me for Duet support via PM or email, use the forum
        http://www.escher3d.com, https://miscsolutions.wordpress.com

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        • A Former User
          A Former User last edited by

          could try this while you wait, but do take note its a poor solution, I only used it for a chamber sensor with no heater.

          dc42 said in Controlling a Cetus3D with Duet3D 0.8.5:

          fotomas said in Controlling a Cetus3D with Duet3D 0.8.5:

          cookie

          I'm using the original cetus thermistor. It works well after finding the correct values for it.

          I do not think a negative B value is common.
          M305 P1 R4700 T112 B-425 C7.060000e-8

          Looks like you are using a PT100 but you have connected it directly to the thermistor input. This will give you a very poor resolution and you should use the PT100 daughter board instead. However, if you want to use a direct connection then I suggest this:

          M305 P1 X501 R47000

          This says you are using a PT1000 sensor, but inflates the series resistor value by a factor of 10 to compensate for the fact that you are actually using a PT100.

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