Easy IoT General

Analog TDS code is only designed for "1413 uS/cm standard buffer solution"

userHead Account cancelled 2018-04-13 19:40:38 4034 Views2 Replies
I have "84uS/cm" "12.88mS/cm" standard conductivity buffer solution.
Code is designed only for 1413 uS/cm standard buffer solution.
following formula is only for 1413 uS/cm standard buffer solution.
tdsValue=(133.42*compensationVolatge*compensationVolatge*compensationVolatge - 255.86*compensationVolatge*compensationVolatge + 857.39*compensationVolatge)*0.5; //convert voltage value to tds value

How can i calibrate TDS sensor for 84uS/cm & 12.88mS/cm??
What is the formula for 84uS/cm & 12.88mS/cm??
Thanks!!
2018-05-15 18:57:13 12.88mS/cm is out of the range, it can't be used, but 84uS/cm is available to use, you can follow the advance tutorial in the wiki https://www.dfrobot.com/wiki/index.php/ ... d_Tutorial userHeadPic robert.chen
2018-05-12 03:36:32 I have a problem with it too userHeadPic n0bi