Does anybody have experience with measuring SR50A sensors via RS 485 conection with datalogger CR800?
I have tried to measure SR50A using SDI12 or RS232 mode and it works well. Because some of the sensors are more than 60 meters from datalogger I am trying use SDM-SIO1 module configured in 485 mode. Even I wired and configured it according to manuals, it doesnt work. It returns ? only. Work well only in RS 232 mode.
Can somebody help me with that please?
Thank you
This may be easier to solve if you communicate directly with James Rogoza who is the main engineer working on this sensor. He is in Canada and his email is james@campbellsci.ca
Thanks, Claude