The de-gasser or CO2 filter eliminates the contribution of CO2 to the conductivity value. Than the true conductivity caused by impurities can be monitored. Please note that CO2 removal is done after removal of ammonia (Cation Conductivity)
There are two methods to remove the dissolved CO2 in the sample, by boiling or “washing” out with an inert gas, like Nitrogen.
The boiling method is complicated introducing potential technical failures, use of energy and high temperature conductivity measuring or sample
cooling down with potential measuring failure and lag time, Watcon prefers to use the gas washing method. (Sparger)
- Simple design and principle
- Less potential faults
- Little maintenance
- Less installation costs
- Low cost of ownership
- Effective method. See comparison test
- Quick measurement with little lag time.
- Suitable for Ex zone.