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1. (WO2019045702) STANDARDS TRACEABLE VERIFICATION OF A VIBRATORY METER
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We claim:

1. A system (600) for a standards traceable verification of a vibratory meter (5), the system (600) comprising:

a storage (610) having a baseline meter verification value of the vibratory meter (5);

a processing system (620) in communication with the storage (610), said

processing system (620) being configured to:

obtain the baseline meter verification value from the storage (610); and determine a relationship between the baseline meter verification value and a calibration value of the vibratory meter (5), said calibration value being traceable to a measurement standard.

2. The system (600) of claim 1, wherein the processing system (620) being configured to determine the baseline meter verification value of the vibratory meter comprises the processing system (620) being configured to determine the baseline meter verification value associated with one of a right pick-off sensor and a left pick-off sensor.

3. The system (600) of claim 1 or claim 2, wherein the processing system (620) being configured to determine the baseline meter verification value of the vibratory meter comprises the processing system (620) being configured to determine the following equation:

StiffnessSMV = Stiffness Physical G;

where:

Stiff nessSMV is a stiffness meter verification value of the vibratory meter that is the baseline meter verification value;

Stiffness physicai is a physical stiffness value of the vibratory meter; and

G is a gain associated with one of a left pick-off sensor and a right pick-off

sensor.

4. The system (600) of one of any of the foregoing claims 1 through 3, wherein the processing system (620) being configured to determine the relationship between the baseline meter verification value and the calibration value comprises the processing system (620) being configured to determine a gain between the baseline meter verification value and the calibration value.

5. The system (600) of claim 4, wherein the gain is associated with one of a right pick-off sensor and a left pick-off sensor.

6. The system (600) of claim 5, wherein the gain is determined using one of the following equations:

= StiffnessSMVRPO

Kf u FCF

_ Stiffness SMVLPO

^LPO - — ;

where:

GLP0 is a gain associated with a left pick-off sensor;

GRP0 is a gain associated with a right pick-off sensor;

Stiff nessSMVRP0 is a stiffness meter verification value associated with the right pick-off sensor;

Stiff nessSMVLP0 is a stiffness meter verification value associated with the left pick-off sensor; and

FCF is a flow calibration factor of the vibratory meter and is the calibration value expressed in units of stiffness.

7. The system (600) of one of any of the foregoing claims 1 through 6, wherein the processing system (620) being configured to determine a relationship between the baseline meter verification value and the calibration value comprises the processing system (620) being configured to use the following equation:

Stiffness Physicai = FCF;

where:

Stiffness phySicai is a physical stiffness value of the vibratory meter; and

FCF is a flow calibration factor of the vibratory meter and is the calibration

value of the vibratory meter expressed in units of stiffness.

8. The system (600) of one of any of the foregoing claims 1 through 7, wherein determining the relationship between the baseline meter verification value and the calibration value of the vibratory meter (5) comprises determining a reference physical property value from the calibration value.

9. The system (600) of one of any of the foregoing claims 1 through 8, wherein the baseline meter verification value is one of a baseline mass meter verification value and a baseline stiffness meter verification value of the vibratory meter.

10. The system (600) of one of the foregoing claims 1 through 9, wherein the calibration value is one of a flow calibration factor and a tube period of the vibratory meter.

11. A method for standards traceable verification of a vibratory meter, the method comprising:

determining a baseline meter verification value of the vibratory meter; and determining a relationship between the baseline meter verification value and a calibration value of the vibratory meter, said calibration value being traceable to a measurement standard.

12. The method of claim 11, wherein determining the baseline meter verification value of the vibratory meter comprises determining a baseline meter verification value associated with one of a right pick-off sensor and a left pick-off sensor.

13. The method of claim 11 or claim 12, wherein determining the baseline meter verification value of the vibratory meter comprises using the following equation:

StiffnessSMV = Stiffness Physical G;

Stiff nessSMV is a stiffness meter verification value of the vibratory meter that the baseline meter verification value;

Stiffness physicai is a physical stiffness value of the vibratory meter; and

G is a gain associated with one of a left pick-off sensor and a right pick-off

sensor.

14. The method of one of any of the foregoing claims 11 through 13, wherein determining the relationship between the baseline meter verification value and the calibration value comprises determining a gain between the baseline meter verification value and the calibration value.

15. The method of claim 14, wherein the gain is associated with one of a right pick-off sensor and a left pick-off sensor.

16. The method of claim 15, wherein the gain is determined using one of the following equations:

= StiffnessSMVRPO

Kf u FCF

_ Stiffness sMvipo

^LPO - FCF ;

where:

GLP0 is a gain associated with a left pick-off sensor;

GRP0 is a gain associated with a right pick-off sensor;

Stiff nessSMVRP0 is a stiffness meter verification value associated with the right pick-off sensor;

Stiff nessSMVLP0 is a stiffness meter verification value associated with the left pick-off sensor; and

FCF is a flow calibration factor of the vibratory meter and is the calibration value expressed in units of stiffness.

17. The method of one of any of the foregoing claims 11 through 16, wherein determining the relationship between the baseline meter verification value and the calibration value comprises using the following equation:

Stiffness Physical = FCF;

where:

Stif fness physicai is a physical stiffness value of the vibratory meter; and

FCF is a flow calibration factor of the vibratory meter and is the calibration

value of the vibratory meter expressed in units of stiffness.

18. The method of one of any of the foregoing claims 11 through 17, wherein determining the relationship between the baseline meter verification value and the calibration value comprises determining a reference physical property value from the calibration value.

19. The method of one of any of the foregoing claims 11 through 18, wherein the baseline meter verification value is one of a baseline mass meter verification value and a baseline stiffness meter verification value of the vibratory meter.

20. The method of one of any of the foregoing claims 11 through 19, wherein the calibration value is one of a flow calibration factor and a tube period of the vibratory meter.

21. A method for a standards traceable verification of a vibratory meter, the method comprising:

obtaining a relationship between a baseline meter verification value and a

calibration value; and

determining a value of a physical property of the vibratory meter based on the relationship.

22. The method of claim 21, wherein the baseline meter verification value is one of a baseline stiffness meter verification value and a baseline mass meter verification value and the calibration value is one of a flow calibration factor and a tube period of the vibratory meter.

23. The method of claim 21 or claim 22, wherein obtaining the relationship between the baseline meter verification value and the calibration value comprises obtaining a gain determined using one of the following equations:

_ Stiff nesssMVRPO .

RPO — > ANA

_ Stiffness sMvipo

^LPO - FCF ;

where:

GLP0 is a gain associated with a left pick-off sensor;

GRP0 is a gain associated with a right pick-off sensor;

Stiff nessSMVRP0 is a stiffness value associated with the right pick-off sensor; Stiff nessSMVLP0 is a stiffness value associated with the left pick-off sensor; and FCF is a flow calibration factor of the vibratory meter and is the calibration

value expressed in units of stiffness.

24. The method of one of any of the foregoing claims 21 through 23, wherein determining the value of the physical property of the vibratory meter based on the relationship comprises determining a physical mass value of the vibratory meter based on a mass meter verification value of the vibratory meter and a gain.

25. The method of claim 24, wherein determining the physical mass value of the vibratory meter based on the mass meter verification value of the vibratory meter and the gain comprises determining one of the following equations:

- MaSSsMVLPO.

m a SMVPhysicalLPO ~ r

where:

MassSMVPhysicalLP0 is the physical mass value of the vibratory meter determined using a left pick-off sensor;

MassSMVLP0 is the mass meter verification value of the vibratory meter associated with the left pick-off sensor;

GLP0 is a gain associated with the left pick-off sensor; and


where:

MassSMVPhysicalRP0 is a physical mass value of the vibratory meter determined using the right pick-off sensor;

MassSMVRP0 is the mass meter verification value of the vibratory meter

associated with the right pick-off sensor; and

GRP0 is a gain associated with the right pick-off sensor.

26. The method of one of any of the foregoing claims 21 through 25, further comprising comparing the value of the physical property of the vibratory meter to a reference physical property value determined from a second calibration value of the vibratory meter.

27. The method of claim 26, wherein comparing the value of the physical property of the vibratory meter to the reference physical property value comprises determining a deviation from the reference physical property value using one of the following equations:


where:

MasstraceabieDeviationLPO is a standards traceable deviation of the physical property as measured by a left pick-off sensor from the reference physical property value;

MassSMVPhysicalLP0 is a physical mass value of the vibratory meter determined using the left pick-off sensor that is the physical property of the vibratory meter; and

mreference is a reference mass value that is the reference physical property value of the vibratory meter; and

where:

MasstraceabieDeviationRPO is a standards traceable deviation of the physical property as measured by the right pick-off sensor from the reference physical property value;

MassSMVPhySicaiRp0 is a physical mass of the vibratory meter measured by the right pick-off sensor that is the physical property of the vibratory meter; and

mref erence is a reference mass value that is the reference physical property value of the vibratory meter.

28. The method of claim 26, wherein the reference physical property value is a reference mass value that is determined using the following equation:

FCF

mref erence —


mref erence is tne reference mass value that is the reference physical property value;

FCF is a flow calibration factor that is the calibration value expressed in units of stiffness; and

freqreference is a reference frequency value that is determined from a second calibration value, the second calibration value being a tube period on air Kl .

29. A method of standards traceable verification of a vibratory meter, the method comprising:

determining a first baseline meter verification value of a first physical property of the vibratory meter;

determining a relationship between the first baseline meter verification value and a calibration value of the first physical property;

determining a value of a second physical property of the vibratory meter based on the relationship and a meter verification value of the second physical property; and

comparing the value of the second physical property to a calibration value of the second physical property.

30. The method of claim 29, wherein the first baseline meter verification value is one of a baseline mass meter verification value, a baseline stiffness meter verification value, and a baseline conduit amplitude value.

31. The method of claim 29 or claim 30, wherein determining the relationship between the first baseline meter verification value and the calibration value of the first physical property comprises determining a gain between the first baseline meter verification value and the calibration value of the first physical property.

32. The method of one of any of the foregoing claims 29 through 31, wherein comparing the value of the second physical property to the calibration value of the second physical property comprises comparing the value of the second physical property to a reference physical property value determined from the calibration value.

33. The method of one of any of the forgoing claims 29 through 32, further comprising performing a frequency check of at least one of the first baseline meter verification value, the calibration value of the first physical property, the value of the second physical property, and the comparison of the value of the second physical property and the calibration value of the second physical property.