Early History of Shunt Diode Safety Barriers

摘要

This document attempts to record the early development of shunt diode safety barriers within the United Kingdom (1961-1971), with a brief reference to the subsequent expansion. It demonstrates that to succeed, it was necessary for many people from different sections of the process instrument industry to recognise the need for barriers and to become involved in the development and acceptance process. The significant contribution of many of these people is generally not recognised.