edctexas
11-19-2014, 03:42 PM
Thanks again to the wonderful people that post info here! I want to show the Dual PID I built from pieces of my junk box and Auberins. Auberins is a great full service place. A little higher price, but their gear is in stock and quick to ship.
I built this to have one PID trained for the pot and one for the hot plate or the oven (PC baking). Experiments showed me that the trained settings were not to different for the plate of the oven, so I just made one box. I had thought about two boxes, one single and one double, but this works great.
This is the front panel.122237
This is the Rear Panel.
122243
This is the insides. I tried to route the AC, SSR control, and the TC wires separated to avoid any noise coupling. The input AC is fused and filtered . Separate On/Off for PID one and two. Not shown is a bypass for the PID control for PID #2. This allows the oven or hot plate to warm up with out the TC sensor.
122245
I do not know how to make these larger yet, but hope that this helps anyone thinking about building a PID. I have built analog ones years ago but this digital one works better and is much simpler to employ. If anyone has questions, please feel free to PM me. The PID makes the Lee Pot work well and I knoe what my lead temp is (less variables). I preheat my molds on the hot plate with an aluminum plate on top to mount the TC sensor. Some day I make get the NOE mold sensor thermometer. But pre-heating means no more than one or two casts before good boolits.
I hope that the ESPC process works for me. At least the boolits look nice and I do not see leading in my experiments. More on this in the coatings section.
Ed C
I built this to have one PID trained for the pot and one for the hot plate or the oven (PC baking). Experiments showed me that the trained settings were not to different for the plate of the oven, so I just made one box. I had thought about two boxes, one single and one double, but this works great.
This is the front panel.122237
This is the Rear Panel.
122243
This is the insides. I tried to route the AC, SSR control, and the TC wires separated to avoid any noise coupling. The input AC is fused and filtered . Separate On/Off for PID one and two. Not shown is a bypass for the PID control for PID #2. This allows the oven or hot plate to warm up with out the TC sensor.
122245
I do not know how to make these larger yet, but hope that this helps anyone thinking about building a PID. I have built analog ones years ago but this digital one works better and is much simpler to employ. If anyone has questions, please feel free to PM me. The PID makes the Lee Pot work well and I knoe what my lead temp is (less variables). I preheat my molds on the hot plate with an aluminum plate on top to mount the TC sensor. Some day I make get the NOE mold sensor thermometer. But pre-heating means no more than one or two casts before good boolits.
I hope that the ESPC process works for me. At least the boolits look nice and I do not see leading in my experiments. More on this in the coatings section.
Ed C