Use of a Photoionization Detector as a Hydrocarbon Trace Gas Analyzer

摘要

A portable photoionization detector is being evaluated as a submarine Hydrocarbon Gas Trace Analyzer (TGA). Principles of the photoionization technique and the physical features of the instrument are discussed, and the utility of this instrument as an onboard hydrocarbon analyzer is compared to the Total Hydrocarbon Analyzer (THA) currently deployed on all SSBN's and all 688 Class SSN's. Theoretical and laboratory evaluations show the TGA to be easier to operate, more simple in design and potentially more reliable than the THA. Final conclusions regarding suitability of the TGA as a shipboard hydrocarbon analyzer will be reached following sea trials that are now underway.