CS512 Datasheet PDF - Campbell Scientific United Kingdom

Dissolved Oxygen Sensor

   The CS512 is a rugged, low-maintenance 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 an inline resistor.

Benefits/Features
The CS512 provides the following advantages over the older dissolved oxygen sensors:
• No gas buildup in the probe
   preventing blown membranes
• Completely sealed case (i.e., no
   vent hole)
• Plastic-to-plastic seal (i.e., no
   o-ring)
• Improved long term stability