I'm looking for someone that can design and provide schematics for a low cost salinity monitor.
This monitor will use a salinity probe in saltwater aquarium enviroment.
It will output isolated 0-5VDC to be read by a microcontroller. The output has to be isolated because it cannot interfere with readings of other monitors such as a pH monitor.
Input range is 0-40ppm
The power source is a single unregulated +12VDC wall wart power supply.