The CS512 is a rugged, low-maintenance dissolved oxygen sensor that is manufactured by OxyGuard. This sensor consists of a self-polarizing galvanic cell that generates a millivolt signal proportional to the amount of oxygen present in the measured medium (typically water). Oxygen diffuses through its membrane onto a cathode that produces a chemical reaction. An electrical current is produced by this reaction that is converted from microamps to millivolts by a resistor.
