TS 4564

TS 4564 is an electrotechnical terminology standard for the terms and definitions used in scientific and industrial measuring instruments. Standards of this kind create a common technical language for measurement practice, so that instrument types such as indicating, recording and counting devices can be discussed and specified with consistent meaning.

How the vocabulary is organised

The scope covers general concepts, sensing devices, measuring instruments, recording instruments, counting instruments, measuring systems and auxiliary devices, constructional parts, characteristic terms, and terms related to instrument transformers. In general technical context, these headings describe a complete measurement chain: sensing the physical quantity, transforming it into a usable signal, presenting or recording the result, and supporting the process with auxiliary components.

A sensing element detects the quantity being measured, while a measuring instrument converts that quantity into a readable value. Recording instruments document the result, counting instruments accumulate events or pulses, and measuring systems and auxiliary devices provide the supporting functions that make the measurement usable in practice. Constructional terms identify the parts that define the instrument’s structure, and instrument transformers are especially important in electrical measurement because they adapt current or voltage levels to forms suitable for measurement.

This standard was prepared as an equivalent of IEC 50/20:1958 and has since been withdrawn. Its practical value lies in harmonising terminology in this field rather than prescribing a specific measurement method.