The Federal Agency on Technical Regulating and Metrology (Official source).
The standard covers three primary subcomponents that make up a complete heat meter: gost r 51649 2017 skachat pdf
Meters must meet specific accuracy classes (typically Class 2 for billing) to ensure fair commercial accounting. Measurement Ranges: Defines nominal flow ( Qpcap Q sub p ), minimum flow ( Qicap Q sub i ), and maximum flow ( Qscap Q sub s ) thresholds. The Federal Agency on Technical Regulating and Metrology
Specifies how devices must perform under various pressures (PN) and temperatures. gost r 51649 2017 skachat pdf
The electronic unit that processes data from sensors to calculate total energy consumption. Core Requirements
Measure the volume of liquid moving through the system.
Requires meters to store, display, and transmit measurement results for historical tracking. Accessing the Full Text