See here:I need a conditioning circuit for a Electrical conductivity probe to measure conductivity of water . Can anyone please give the design of the circuit and explain how it is working.
According to your needs:what frequency should I choose to derive my conductivity electrode
As author said:I need a conditioning circuit for a Electrical conductivity probe to measure conductivity of water
Thank you so much, will get back to you again if I get confused with anything, thank you again for your help!According to your needs:
As author said:
"I have chosen a frequency of 13 kHz because it is the one that maximize the sensitivity in the solutions of medium to low concentrations (<20 g/l NaCl)."
It is better to use frequency 13 kHz and experiment with probe by author's design and same dimensions.
So it will helpful to value your works by comparing them with author's results.
Look at book in attachment:Just immerse the CMOS circuit AND or OR logics two wires into that water and feed them via some several MOhms from Vcc. The best choice is set the logic into Scmitt trigger circuit for more robustness. Works 120% well. For example: https://mysku.club/blog/china-stores/52622.html or https://oldoctober.com/ru/fluid_detector/ or http://we.easyelectronics.ru/antonl...y-dlya-kolodca.html?ysclid=lfcid8k77k41488998 or by means of 555 as here: http://kopilkasovetov.ucoz.ru/index/signalizatory_vody_v_bytu/0-50 or here https://master-electrician.ru/socke...na-mikrosheme-prostoi-indikator-urovnya-vody/
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by Jake Hertz
by Jake Hertz