K-Type Thermocouple Cartridge

Discussion in 'E3D-v6 and Lite6' started by tiagoermida, Oct 6, 2016.

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  1. tiagoermida

    tiagoermida Member

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    Hi,
    I'm trying to upgrade my printer to use a High temperature heater.
    For the temperature measurement i decided to use your k-type thermocoupler.

    But in this case i will need a much longer cable to wire it to the board. As i have read somewhere else, the thermocouple resolution could be affected by the cable length.

    Is this an issue? Could i just extend the cable length that i desire or should i take some considerations first?

    Thanks in advance,
    T_Ermida
     
  2. elmoret

    elmoret Administrator

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    The problem is not the length of the cable, but joining dissimilar metals and creating cold junctions.

    Would recommend not extending the thermocouple, but instead mounting the thermocouple board at the end of the thermocouple cable, and extending the output from the thermocouple board.
     
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  3. tiagoermida

    tiagoermida Member

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    the board i'm using (Panucatt Azteeg X3 Pro) already supports Thermoculpes. But i really need to extend the cable.

    What would be the solution?
     
    #3 tiagoermida, Oct 6, 2016
    Last edited: Oct 6, 2016
  4. seabell

    seabell New Member

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    Normally you would use extension or compensating cable - and connectors - appropriate for the TC you are using.
    It may be cheaper to just buy another cheap-ish K-type with a long cable, cut off the tip and use the chromel-alumel wires to extend your hotend TC (again, using proper connectors). The length you will be using is unlikely to be an issue, but many TC alloys don't stand up to repeated bending very well, so that might be a problem.
    Elmoret's suggestion is probably the ideal method, though it may seem inconvenient.
    I'm new here, so not sure if allowed to post links to suitable products.
     
  5. mike01hu

    mike01hu Well-Known Member

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    No problem with posting where you like if you have a useful contribution to make. All are welcome!:)
     
  6. elmoret

    elmoret Administrator

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