TS 3390

TS 3390 is a vocabulary standard that brings together definitions for terms related to pressure and temperature. It is intended to support consistent technical language in plant components and similar engineering applications, so that measurement, indication and communication use the same terminology.

The technical role of pressure and temperature terms

Pressure is the action exerted by a fluid or gas on a surface, while temperature expresses the thermal state of a system. These two quantities are often considered together in engineering systems because safe operation and correct measurement in vessels, pipelines, boilers, heating and cooling equipment, and process plants depend on consistent terminology. Vocabulary standards collect expressions that may vary across sources into a shared technical language.

What this standard focuses on

According to the supplied scope, the standard covers definitions of terms related to pressure and temperature, with use in the context of plant components. The cited reference sources include DIN 2401 Part 1, DIN 1314, Sprenger 77/78, DIN 28002 and DIN 66037, indicating alignment with established technical terminology practice. This document should therefore be understood as a terminology framework rather than a standard that introduces test methods, numerical limits or design requirements on its own.

A standard of this kind is useful in engineering drawings, specifications, maintenance documentation and measurement reports, where ambiguity can arise if terms are not defined consistently. Clear definitions are especially valuable when distinguishing between units, indicators and operating conditions.