This standard establishes methods for measuring p used at water metering points in irrigation and water management systems.
GOST R 51657.2-2000 Referenced Document
GOST 15528-1986 Instruments for measuring flowrate, volume or mass of flowing fluid and gas. Terms and definitions
GOST 8.439-1981 State system for ensuring the uniformity of measurements. Water flow rate in closed conduits. Technique of measuring by velocity-area method
GOST 8.563.1-1997 State system for ensuring the uniformity of measurements. Measurement of liquids and gases flow rate and quantity by differential pressure method. Orifice plates, nozzles ISA 1932 and Venturi tubes inserted in circular cross-section filled conduits. Spec
GOST 8.563.2-1997 State system for ensuring the uniformity of measurements. Measurement of liquids and gases flow rate and quantity by differential pressure method. Measurement procedure by orifice instruments
GOST 8.563.3-1997 State system for ensuring the uniformity of measurements. Measurement of liquids and gases flow rate and quantity by differential pressure method. Procedure and module of calculations. Software
GOST R 51657.1-2000 Water flow measurement in hydromelioration and water economic systems. Terms and definitions*， 2024-04-17 Update
GOST R 51657.2-2000 history
2000GOST R 51657.2-2000 Water flow measurement in hydromelioration and water economics systems. Methods of water flow measurement. Classification