Connect with us

Connecting a themocouple to PID controller

Discussion in 'General Electronics Discussion' started by Blackcherry, Jun 13, 2013.

Scroll to continue with content
  1. Blackcherry


    Jun 13, 2013
    Hi everybody,

    I am trying to build a PID temperature controller. I have the thermocouple Amico PT 100

    and the PID controller


    My question is how to connect these two. This thermocouple has 3 wires, red, blue, and yellow. I think that yellow=plus, red=minus, but wtf is the blue one? The terminals 9 and 10 on the controller (see the pic) are denoted "Thermocouple + and -" and there is one more, number 8, which is connected to 9 via resistor. It is clear that "yellow" goes to "9" and "red" to "10,", but what to do with "8" and "blue"? I am tempted to just connect them and see what happens, but have not done that.

    Any advice?

    Attached Files:

    Last edited by a moderator: Jun 14, 2013
  2. davenn

    davenn Moderator

    Sep 5, 2009
    hi there,
    welcome to the forums

    OK the logical thing is that term 8 goes to the sensor output wire

    BUT before you connect anything you must identify the colours on the probe correctly else it may have a VERY short life

    That resistor shown on the back of the controller will most likely be denoting the actualy thermocouple within the probe

Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day