Instrumentation system design nomenclature

We are faced with locating molecules that are sparse within the environment, hence the term trace. There are several basic steps that are necessary, independent of the design of the specific system or the technology being incorporated. Table 1.1 lists those steps and correlates them with more common electronic instrumentation nomenclature. Some of the actions will involve... 

Many chemical and petroleum companies are now using Process Industry Practices (PIP) criteria for the development of P IDs. These criteria include symbols and nomenclature for typical equipment, instrumentation, and piping. They are compatible with industry codes of the American National Standards Institute (ANSI), American Society of Mechanical Engineers (ASME), Instrument Society of America (ISA), and Tubular Exchanger Manufacturers Association (TEMA). The PIP criteria can be applied irrespective of whatever Computer Assisted Design (CAD) system is used to develop P IDs. Process Industries Practice (1998) may be obtained from the Construction Industry Institute mentioned in the References. 

The field has a well-developed nomenclature and symbolism. The one-electron electrode reaction is designated by E and a chemical reaction by C. There are extensions of this system, such as E+E for a two-electron electrode reaction, and for reduction and oxidation. Cl and C2 for first- and second-order reactions and Cl for a pseudo-first-order reaction. Cyclic voltammetry is the most widely used technique because of the availability of appropriate instrumentation, and the number of 2q>pIications is likely to increase with the recent availability of software to simulate cyclic voltammograms. Such simulations generally are essential for the determination of meaningful kinetic parameters. 

Many computer vendor data base systems are initialized during the system engineering design of the piping and instrumentation diagrams. Line or nomenclature lists and other reports can be extraaed from this data. Data consistency checks are made throughout to ensure that the information is complete and accurate. 

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