State system for ensuring the uniformity of measurements. Measuring instruments of heat energy hot-water heating systems. Metrological assurance. Main principles

This document outlines the primary principles for ensuring measurement consistency in hot water heating systems. It focuses on the metrological assurance of measuring instruments used within these systems. The content provides guidelines for establishing and maintaining measurement accuracy, reliability, and uniformity across various applications. It covers the requirements for calibration, verification, and the use of measuring instruments in the context of thermal energy supply. The document also addresses the procedures for ensuring the traceability of measurements and the conditions under which measurements should be performed. It is intended to support the implementation of effective measurement practices and contribute to the overall quality of thermal energy distribution systems. The information presented serves as a reference for professionals involved in the design, operation, and maintenance of heating systems.