PID Annealing Oven with Programmable Ramp & Soak Functions

This allows you to take the easy to find & affordable Chinese Lab oven and convert it over to a controller that has programmable ramp & soak features all for about $550 (including the lab oven cost of ~$400).

I use this to anneal PPS-CF, PPA-CF, and PET-CF, all of which require tightly controlled ramping and cooling of temperatures to avoid warping.  Instead of getting up every few minutes over the span of hours to manually adjusting a typical PID oven controller to slowly increase the temperature, I can now program an entire routine that will fully control the ramping, soaking, and cool down to anneal without any intervention after I start the program.

You will replace the stock PID Oven controller with a Novus N20K48 Ramp & Soak PID Controller, and the stock contactor used to control the heating element will be replaced with an SSR.

The last photo is a photo of the 3 wire PT100 thermistor wiring, as that can be hard to know what to do.  The 3 wires should be hooked up to the Novus N20K48 PID controller from left to right as Black → Blue → Red.  Other controllers may use different PT100 wiring order.

The SSR adapter plate does need 2x M4 heatset inserts installed into the larger of the two holes.  The SSR Heatsink then bolts down into these.  

The Lab Oven Controller Trim does require two holes to be drilled into the front of the lab oven for mounting.

I've seen the inside of 4 of these identical ovens and have noticed that occasionally components are in slightly different locations (you can see some empty holes in the photos I took).  I hope that the printed parts I provided work for you, but be aware that if things were installed in slightly different locations you may have to modify some of the printed parts.  I have included STEP files to make this easier.

BOM:

1. Lab Oven: 
   1. There are often several sellers all selling the same 45L capacity one I linked.  Make sure to get the correct voltage for your region.  Sometimes other sellers might be cheaper, so look around.  Just make sure to get this one for printed parts to be compatible.
   2. https://www.amazon.com/dp/B0CYLT4BZB?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_3 
2. SSR
   1. Get a high quality SSR appropriately rated for the voltage and amperage your lab oven draws.  I have seen these come in different wattage ratings, so make sure your SSR is rated for the oven you have.
3. SSR Heatsink:
   1. https://www.amazon.com/dp/B091HQL9TM?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1&th=1
4. Appropriate wires and connector terminals
5. M4 (6mm OD) heatset inserts
6. Novus N20K48 Ramp & Soak PID Controller
   1. Other 1/16 DIN controllers will work too, but this one is probably one of the best Ramp & Soak PID controllers for the price (and has a handy phone app to modify run programs via Bluetooth in addition to software that will run on a Windows PC)
   2. Videos I found helpful in programming this controller (also make sure to read the manual!):