Applies to the susceptibility of industrial-process measurement and control instrumentatiion to electrostatic discharges generated by operators touching this instrumentation and to electrostatic discharges generated between objects in the proximity of this instrumentation and establishes severity levels and the required test procedures. Establishes a common reference for evaluating the performance of industrial-processus measurement and control instrumentation when subjected to electrostatic discharges. Includes electrostatic discharges which may occur between electrostatically charged objects brought together near to the vital instrumentation.