How to??

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Jun 20, 2007
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I recently purchased some parts of Ebay to set up my forge with a thermocouple and PID controller!

The thermocouple that arrived is not like the one in the pic where I ordered. The one in the picture had set screws on the back to connect the wires. Although this one seems to be a good one as it has a series of cermaic blocks that slide onto it to protect its lifetime. I questioned the supplier about the lenght as it said to order for length and I could not find a option to enter the length of it. He emailed back and said not to worry make sure it would be long enough and if too long I could trim with wire cutters. After seeing it I usnderstand what he meant about the length being able to be trimmed with wire cutter!!!!!!!!

This is what arrived in the mail.
(Click thumbnails for larger view)


My question comes from "HOW TO" on the hookup from the thermocouple to the PID controller. As you can see in the pic the ends of the thermocouple are approx. 1/8" in diameter.


The ends of the connector that came with the PID controller are wire connectors on one end (which is to connect to the contoller) itself and a screw in connection on the other end for a standard thermocouple.


However in this instance that is not going to work, so here is the question.

Where do I get the proper line or how do I go about making the proper line to make the connection between the thermocouple and the PID controller, and how to I make that connection at the thermocouple. :confused:

I am thinking that this connection has to be made by the properly insulated wire as the one supplied with the controller has a metal casing around the wires. This one is sort of out of my experience zone, :foot: so would appreciate any info anyone can share as to the "how to" on making a proper hookup!!!!! :eek:
 
I set you an email, but for those who are reading this thread:
The shielded wire assembly is a low temp TC. The screw stud is the TC. It is good for controling a tosater oven or reading the temp on a quench tank. The TC you recieved with the ceramic sleeves is the right type. It should have a TC conector block that it mounts to. You may have to purchase this separately. It is an oval ceramic block with two holes that the TC leads go through. Screws secure the TC leads to a terminal block. The TC wires to the PID conect to the terminal block. The TC wires need to be a special wire that matches the TC type. You can cut the screw stud TC off the shielded wire and use the wires to hook up the TC.
 
Yep, what he said. An alternative, if you didn't get all the pieces, is to go to home depot or the like and pick up some grounding kearney's(spelling??). Something like the ones on the top in this pic.
 

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Yep, what he said. An alternative, if you didn't get all the pieces, is to go to home depot or the like and pick up some grounding kearney's(spelling??). Something like the ones on the top in this pic.

Hey thanks guys. I already emailed the guy I bought the TC from and am waiting to see what he has to say about a TC connector block. I had also thought of the elctrical hookup like you are talking about. I would have to cover in shrink wrap once the hookup is made, to make it safe but that is an alternative!
Thanks again to evryone!:thumbup:
 
No need to cover the TC connections ( actually, they almost never are ). Kearney nuts will work fine if a block can't be easily procured. Kearney connectors are know as split bolt connectors, nowdays.
Stacy
 
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