The Diablo 5000B Real-Time Gas Analyzer (RTGA) is a real-time chemical measurement tool for continuous process improvement. It is ideal for applications where fast chemical analysis is required, such as monitoring process transients and dynamic continuous reactions. The 5000B RTGA can be used for fuel cell gas analysis, syngas monitoring, catalyst research, monitoring of volatile solvent residues, pharmaceutical reactor headspace monitoring, and many other applications.
Reliable Calibration and Quantitation
One of the important features of the 5000A RTGA is its ability to perform stable and reliable quantitative analysis. From the extremely stable 5977 MSD, to the process sampling interface with active pressure compensation, and the MS Sensor software, the RTGA has been designed with quantitative analysis in mind.
One of the drawbacks of the simple capillary interfaces that are often used for direct MS applications is that the flow rate through the capillary into the MS source is matrix dependent due to changes in gas viscosity. Consequently, rigorous calibration requires calibration mixes that are similar in composition to the actual sample matrix. In addition, if the sample composition changes significantly during the course of an experiment, the calibration may no longer be valid.
The 5000B RTGA's differentially-pumped interface design elimnates this problem, and when combined with active pressure compensation, allows you to use simple calibration mixes with inert balance gases.
Calibration of the system can be performed using a dynamic blending system, or gas cylinder bland mixtures. Gas standards can be diluted in various matrices such as helium, nitrogen, and natural gas at the point of use and time of use for the purpose of establishing calibration curves over the concentration range of interest.
The MS Sensor 4.0 software allows you to perform multi-level external standard calibrations, which can include sample pressure compensation.
The following calibration plots illustrate the linearity of the RTGA in both trace and high-level applications:
