In some applications the concentration of the measured components are quite high. In such cases the MFC based Dilution System - an add-on product for the V&F process mass spectrometers equipped with a capillary inlet - could be used. It allows a dilution of the sample gas down to a factor of 20.
This is realized with an integrated mass flow controller, which adds a dilution gas to the sample gas by injecting it between outer and central capillary. The only prerequisite for the use of this solution is constant pressure at the sampling point.
Available standard dilution steps (futher upon request):
The advantages are:
- Hardware (MFC and filter) is completely integrated inside of the analyzer
- Adjustment of the dilution steps is fully software controlled
- The dilution rate can easily be selected in each setup
- Even switching of dilution rates within one setup is possible (see figure)
MFC dilution system V&F article number 800387.