Heat treating oven

[Don1966]

Rod I believe I have the same controller.  The kiln has a Type J thermo couple installed in it but I will change it to a Type K to get the 2300 degree F range. The useful range for the J is about 1600 degrees F.


Don

[Tjark]

Have found a couple off controllers with a solid state relay.
Have bought this set.
Maybe this offer is interesting for others.
Its today (this evening ) on sale.
http://nl.aliexpress.com/wholesale?initiative_id=QRW_20151111120700&SearchText=pc410+ssr&productId=32326668346

   Tjark.

[Don1966]

Those look to be promising Tjark and I do apologize for not responding to your comment. All you should need with these are the SS Relay with them to control the heaters and thermocouple of coarse.

Regards Don

[Tjark]

Don, you don’t have to make apologies , we have not always an answer to questions and not always the time.
Otherwise you will have no time left to spent in the shop.
I have ordered the complete kit.
The only thing I have to change is the thermocouple and luckily I have some in the workshop.
The picture shows the complete kit.


   Tjark.

[Don1966]

The parts arrived and I decided to complete the modification to the oven. I left the original controls as is and just tapped into the main line to control the temperature. I test the temperature with two different instruments I had and both showed the controller to be spot on. So some clean up and a little painting and the over is complete.
Some photos for you.




Don

[Tjark]

Don, a beautiful solution.
Well done.


   Tjark.

[Dave Otto]

Looks nice Don!

Dave

[fumopuc]

Hi Don, a nice find and a proper modification. I am jealous.