Introduction of Liquid Flow Standards Section Fluid Flow

Introduction of Liquid Flow Standards Section Fluid Flow Division National Metrology Institute of Japan (NMIJ)

Water Flow Facility 2

Overview of water calibration facility I - Bird’s-eye view Overflow Head Tank Feed Pumps Circulation Pumps Control Bldg. Working Standard Flowmeters Calibration Bldg. Testing Bldg. Prover Bldg. 5 t, 500 kg Weighing Tank Bldg. Small Water Calibration Rig 50 t Weighing Tank Bldg. 3

Hydrocarbon Flow Facility 4

Hydrocarbon Flow (Large) Servo PD meter Kerosene SVP Light oil Chiller Unit Storage tank （Kerosene； 43 m 3） Test line Heat exchanger Pump Diverter/ Weighing Tank/ Storage Tank Balance 3 （Light Oil； 43 m ） the fluctuation of temperature for 10 min. is less than 0. 03 ºC 5

Flow Calibration Services at NMIJ Water Flow Size Facility Calibration Range BMC (k = 2) Small 10 kg Weighing Tank 0. 002 m 3/h to 1. 2 m 3/h 0. 039 % Large and Medium 500 kg, 5 t and 50 t Weighing Tanks with Constant Head Tank 0. 3 m 3/h to 3000 m 3/h 0. 042 % to 0. 060 % Super. Large Reference meters Ball prover 750 m 3/h to 12 000 m 3/h at 70 C 0. 081 % Hydrocarbon Flow (Kerosene and Light oil) Facility Calibration Range BMC (k = 2) Small 2 kg Weighing Tank 0. 01 m 3/h to 0. 1 m 3/h 0. 03 % (mass) 0. 06%(volume) Middle 32 kg Weighing Tank 0. 1 m 3/h to 15 m 3/h Large 10 t and 1 t Weighing Tanks 3 to 300 m 3/h 0. 02 % (mass) 0. 03%(volume) 6