1. REPORT OF RECENT ACTIVIES
APMP2011 KOBE
TC FF
Dr Nguyen Hong Thai VMI

2. - 2011 Apr. Per review Dr Jong Seung Paik (KRISS)
- Jul. Submitted CMC - CMC TCFF and TCQS
- Aug. approved by TCFF
- Oct. : posted at JCRB website for inter-regional Dr Yoshiya Terao (TCFF Chair)
- Comments from Euromet and SIM
VMI 2011

3. Calibration or Measurement Service Measurand Level or Range
Quantity
Instrument or Artifact
Instrument Type or Method
Minimum value
Maximum value
Units
Volume
Volumetric Vessel
Weighing method
0.1
500 L
Water volume flowrate
Water flowmeter
Positive displacement, turbine, differential pressure, ultrasonic, vortex, electromagnetic 1
200
m3/h
Gas volume flowrate
Gas flowmeter
Transfer method
0.05 5

4. Measurement Conditions/Independent Variable
Expanded Uncertainty
Parameter
Specifications
Value
Units
Coverage
Factor
Level of
Confidence
Is the U
Relative one?
Liquid
distilled water
0.012 % 2
95%
Yes
Temperature
ambient
Pressure
Humidity
Fluid
water
0.1
max to 260 kPa
air
0.14
max to 800 kPa

5. VMI AND WATER SUPPLY Co. HCM CITY
TEST RIG
FOR VERIFICATION AND
TESTING WATER METERS
VMI AND WATER SUPPLY Co. HCM CITY

6. DN: 100 – 600 mm
Flow rate: 2500 m3/h
Volumetric proving tanks: 500 L; 10000L;
Uncertainty: 0.1%
Master meters DN: 65; 200; 600 mm
Uncertainty: 0.5%
Water meters MPE: Class 2

7. Performance test:
Accuracy
Reverse flow
Flow disturbance
- Endurance

12. THANK YOU FOR YOUR ATTENTION