the final say: A note about temperature standards: Which do you choose?

摘要

Standards define materials, tolerances, and the conditions within which the agreement to purchase is fulfilled. They keep us from relying on pabulum such as "Quality goes in before the name goes on." ISA was founded in order to clarify and facilitate the use of instrumentation in the U.S.--Standards and Practices were essential. The very first standard was assigned ISA-SP1. The committee was charged with temperature measurement and later organized into several sub committees. SP1.1, SP1.2, etc., were assigned to different aspects including RTDs, thermocouples, thermowells, meters, and transmitters. I was the last of many chairmen of that committee as ISA redirected its focus from fundamental control elements and sensors to becoming an international association encompassing computers and automation.