ftlstrings
Well-Known Member
Hey all, I have set my pid farther away from my brewing area in anticipation of a future upgrade to something like a touch screen POS kinda thing. In order to make this work I had to extend the thermocouple wires. I bought type k male and female plugs and thermocouple wire and have it running out to the PId which is about an additional three to four feet away from the kettle. Trouble is, now my sensor is way off. Polarity is fine, but during a test run last weekend the temps were approximately 40 degrees F too low. Better than too high; however quite unacceptable.
Today I had time to try to recalibrate the sensors and set out to do this. I took my first temp reading at 42 F ambient temp (my garage is chilly) and while I was getting things ready to fill the kettle and find the offset in temps while at boil I noticed that my PID was reading higher by a few degrees. A I watched I noticed that it kept climbing. Temp difference initially was 7 degrees, then it climbed to 20 degrees over the next ten minutes of so. At this point I shut the PD off and came in to post this. Any touts on what is going on here? How can I calibrate a system that is not static?
Today I had time to try to recalibrate the sensors and set out to do this. I took my first temp reading at 42 F ambient temp (my garage is chilly) and while I was getting things ready to fill the kettle and find the offset in temps while at boil I noticed that my PID was reading higher by a few degrees. A I watched I noticed that it kept climbing. Temp difference initially was 7 degrees, then it climbed to 20 degrees over the next ten minutes of so. At this point I shut the PD off and came in to post this. Any touts on what is going on here? How can I calibrate a system that is not static?