Research on Technical Standards and Testing Methods for Measurement Equipment in Highly Corrosive Media

Abstract

Addressing critical gaps in the strong corrosive media measurement equipment industry—including absent specialized standards, testing methods detached from actual operating conditions, and one-dimensional evaluation systems—this study develops a comprehensive technical standard framework and innovative testing methodologies. Based on material characteristics of Hastelloy C-276 and tantalum diaphragms, combined with empirical data from 517 industrial projects and 17 patented technologies, we establish a four-dimensional (concentration-temperature-pressure-media type) five-tier classification system and define 15 core technical indicators. Ten innovative testing methods are proposed, including a four-factor coupled accelerated corrosion test. A draft technical standard was formulated and validated across 20 enterprises and 51 projects, achieving 98% compliance with <3% deviation between test results and field data. The standard increased industry product qualification rates from 75% to 92%, filling a domestic void in this specialized field and providing unified technical criteria for equipment R&D, manufacturing, and selection.