A matched pair that calculates the temperature difference between supply and return.
Specifies how devices must perform under various pressures (PN) and temperatures.
is the current Russian national standard for heat meters used in water-based heating systems. It establishes technical requirements for the accuracy, design, and testing of devices that measure thermal energy. Key Technical Specifications gost r 51649 2017 skachat pdf
💡 Ensure you are viewing the 2017 revision , as it replaced the older 2014 and 2000 versions to align with updated metrological requirements. GOST R 51649-2000
Measure the volume of liquid moving through the system. A matched pair that calculates the temperature difference
The standard covers three primary subcomponents that make up a complete heat meter:
Requires meters to store, display, and transmit measurement results for historical tracking. Accessing the Full Text The standard covers three primary subcomponents that make
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.
