01
ISO 4064
TS EN ISO 4064 Water Meters
Metrological and technical requirements, test methods and test report format for cold and hot water meters.
- Q1, Q2, Q3, Q4 flow rates and the R ratio
- Maximum permissible errors in the lower and upper flow zones
- Indication error, static pressure, pressure loss and reverse flow tests
- Durability and flow disturbance tests
- Gravimetric and volumetric test bench applications