Continuously Monitors & Controls Mass Flow Controllers Software


The custom designed software continuously monitors and controls mass flow controllers (MFC’s) and allows an automatic generation of gas mixtures in a programmed sequence. Dry contact closures or digital contacts ensure the software can be either remotely controlled, or send a signal in order to drive an external valve or start a third party analyzer. Automation of the process provides real time-saving for the operator. The GasMix software controls the temperature set points for the evaporator and the heated lines. This ensures that the newly generated gas standard is kept in a gaseous phase up to the injection point of the analyzer or any other delivery point.

The built in audit trail function ensures total traceability of each operation. Regular automatic sequences may be saved and recalled at any time.

Application Spotlight : Biogas Valorization

Produced by landfills and sewage digesters, Biogas is an excellent source of renewable energy for electricity generation. The composition of biogas is complex, and traces of pollutants and/or contaminants containing Silica for instance, may be found. Therefore many applications using biogas as a fuel are not possible. An example would be siloxanes, which at high temperature, are transformed into silicon oxides. These oxides are very hard materials which can damage the metal surfaces of an engine. Monitoring and eliminating these particles is the essential for this production to become viable and profitable. Gas Chromatography (GC) is used to evaluate the efficiency of a siloxane remover process. The analyzer must be calibrated both at high levels (before the siloxane removal process) and low end, when the gases have gone through the filter. Gas standards containing siloxanes are not commercially available. The AlyTech GasMix™ for Liquids is used to vaporize octamethylcyclotetrasiloxane (D4) which is liquid at room temperature; this standard can then be mixed with a H2S standard yielding a ready to use multiple compound gas standards.

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