Hello Yuri,
How did the Ping))) work out? I want to use something to help measure water in the HLT. Dose it get affected by steam/moisture?
I have on older Polaroid sensor that i wanted to use but they have a min range of 9" without getting more sophisticated with the control lines.
I came across an
old stamp article that uses two foil strips. I don't know how the different mineral content would effect the readings, If i
understand this correctly, temperature will and a non trial effect. There is also proximity effects of other objects.
one way to possible deal with the temp and ion content would be to fill to a known level and after temp is reached use that as a calibration point......
Benefits would be to be able to use with standard sight glass and be cheap...
also thought of using a 10 turn pot + float...
.....I'm babbling a bit....
link