Continuous Emission Monitoring. James A. Jahnke
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Название: Continuous Emission Monitoring
Автор: James A. Jahnke
Издательство: John Wiley & Sons Limited
Жанр: Биология
isbn: 9781119434023
isbn:
Figure 3‐28b Circor NeSSI interconnection system.
Figure 3‐28c Swagelok NeSSI interconnection system.
Regardless of the platform, sensors and other system components are accessible from the top of the platform. Translating a traditional flow schematic into a NeSSI system may be challenging for someone unfamiliar with the manufacturer’s architecture. However, computer software has been designed to assist in the development of NeSSI structures from a given schematic. Figure 3‐29 illustrates a generic miniature modular CEM system.
Figure 3‐29 Example of a miniature modular CEM system.
These modular sampling systems have less dead space than the tube and fitting system and are less likely to leak than the traditional nut and ferrule fittings by using surface‐mounted o‐rings. However, if a leak occurs, it may be more difficult to find and resolve the leak.
NeSSI systems have seen the greatest application when multiple identical extractive systems are required. In other applications, NeSSI components may be substituted for part of an extractive system, such as the calibration gas distribution system for daily CEM system verifications, or calibration gas dilution systems. The size and modularity of the modular platforms make them ideal for the application of miniature and micro sensors and analyzers (Aquino 2003; Chon 2004). The University of Washington Center for Process Analysis and Control (CPAC) is the primary information resource for conference proceedings, publications, and current progress on NeSSI systems (Dubois 2009; Dubois et al. 2004; Marquardt et al. 2009).
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