1. Equipment introduction

Water flow standard device is a standard equipment for verifying various types of water flow meters and researching flow meter test methods.

2. According to the standard

JJG 164-2000 Standard Facilities for Liquid Flowrate

JJG 198-1994 Verification Regulation of Velocity Flow Meter

JJG 640-1994 Verification Regulation of differential pressure type flowmotor

JJG 643-2003 Flow Standard Facilities by Master Meter Method

JJG 667-1997 Liquid Positive Displacement Flow Meter

JJG 1029-2007 Vortex-shedding Flowmeter

JJG 1033-2007 Electromagnetic Flowmeters

JJG 1038-2008 Goriolis Mass Flow Meters

3. Technical parameters

Medium: Water

Pipeline internal diameter and flow: Reference vortex flowmeter flow range

Verification caliber range: DN15-DN300 

Static mass method design flow range: 0.5-720 m3/h

Master meter method design flow range: 0.5-1800m3/h

Flowmeter to be calibrated: Coriolis mass flowmeter, turbine flowmeter, vortex flowmeter, mass flowmeter, electromagnetic flowmeter

Methods: Static mass method, dynamic master meter method. The mass method and master meter method are combined.

Static mass method uncertainty: 0.05%

Master meter method uncertainty: 0.3%

System pressure fluctuations: ≤0.3%

Flow stability: 0.2%

Automatic data acquisition, data processing, printing; Automatic valve control and automatic flow adjustment

The device is tiled. Set 4 clamp meter epitopes : DN50 epitope is compatible with DN40, DN25, DN15; DN100 epitope is compatible with DN80 and DN65, DN200 epitope is compatible with DN150 and DN125; DN300 epitope is compatible with DN250. Moving bracket is used for the replacement of test pipeline, which is convenient and flexible.