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  1. G

    What are you using under your kettle for heat protection?

    2 slats of pvc(paintable plastic wood) trim so it will dry underneath and not mold. Before that old laminate counter tops. at my altitude we are talking about 210.7 degree water. Now if it wasn't my own brewing space and I was still up in the kitchen I wouldn't be so cavalier and would use...
  2. G

    What came in the mail for you today?

    Wife: They are finding high levels of PFAs in the ground around dumps in town. me: that's not good... couple hours later Me: I found a solution for our "drinking water" RO system with a 10.7 gallon tank for our "drinking water" from airwaterice and tds meter arrived yesterday does that count?
  3. G

    ground wire for heating element

    They are 100% stainless including the base. I clean by heating 2-3 gallons of water with citric acid so it still looks new.
  4. G

    ground wire for heating element

    Can you get these (Dernord) from amazon? They come with the ground screw and the cover with cord grip. I have been running the 5500w Tri clamp. Just bought the 6500w.
  5. G

    Water in beer line after cold crash...how is this possible with positive pressure in the fermenter?

    Neither the tube on the outlet of the spunding valve nor the air in the valve downstream of the diaphram are under pressure. So it will have suck back but only on the outlet side not the beer side. If you replaced the spunding valve with a plug the open tube submerged in water would still have...
  6. G

    PID Improvement?

    "By using the derivative of error it cancels out the integral phase lag. This eliminates integrator overshoot and oscillations to the level that it can be tuned without a proportional term. " I should clarify this I still run a derivative based Proportional term using the same error term I use...
  7. G

    PID Improvement?

    I hate integrators with a passion. With the exception of my EBIAB I have only worked on controls with 7-17ms step response <.01% steady state error. That being said, some of the products used electromechanical actuators with similar time constants to the disturbances that needed to be...
  8. G

    DIY Brew Controller Design Ideas

    I went custom as well I think the level of automation and user interface is very much a matter of personal taste. If you are using an inbuilt pwm function it won't do what you want for a zero crossing output circuit. At 50% duty cycle you will get a pulse from the pi at 120hz that is on for...
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