Need help
I have to design Pic based circuit to detect low fluid level, non contact through plastic container.
Any experiences?
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Need help
I have to design Pic based circuit to detect low fluid level, non contact through plastic container.
Any experiences?
Example... RS Components Part 477-4676 at www.rswww.com
Alternatively a Part like 339-730 is cheaper but not as reliable...
Enter "Liquid Level" into the Search Box at the RS Components website and make your choice from a few hundred different offerings... if anything it'll give you some ideas as to what is available...
Hi, Branko
You could place two auto adhesive copper sheets on two facing sides of your plastic tank : you built a capacitor; the fluid level will make the capacitance vary with the level.
Use this " capacitor" as the capacitor of a typical RCTime function capacitor, and it's in the pocket.
if needed, a CD4060 could also be used to get an easier-to measure period.
Another trickier solution is to use the capacitor in the RC Clock circuit of the Pic ...
Alain
Yes! I have some experience on capacitive water level sensors, they can do what you need.Quote:
Originally Posted by branko
Fluid could ba anything from mercury to nitrobenzene.
Question 1. What fluid are you trying to detect?
Question 2.Do you need to detect 1 specific level or a range
of levels? - Digital or Analog measurment? oops that's 3 questions, or not.