Working on a project to replace temp switch control with BRX and SSRs on injection molding machines. I built a test bed with four (4) SSRs to connect to injection mold heaters and T/Cs for temp measurement/control. Using BRX PID with TP output. Wondering how to do checkout? Why not control the temperature of the outside of light bulb. Used BRX autotune. Looks good to me.
https://www.youtube.com/watch?v=fq5DzbnmKYs&t=100s