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PID alarm for smelting wheel weights

Now I always wondered what I would use the alarm feature on my PID controller and with a little thought I found what to use it on. I only use wheel weights for my casting of bullets and with that I am always watching for zinc in the mix. So why not use the alarm feature to warn me when the temperature is getting high enough to melt zinc. The is not a automatic system but a warning system to let you know, but you don’t have to baby-sit a thermometer like I used to and frees me up to do other things. So this is my version of a PID alarm and I’m glad I did, it did take out the watching every few minutes. Now do yo need it no but it helps, and if you already have a PID it doesn’t cost you but just a little work.