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Title: Gas Ultrasonic Meter: Master Meter Series Validation
Author: Haridas Bhaskaran, Jong Chin Foh
Source: 2006 South East Asia Flow Measurement Conference
Year Published: 2006
Abstract: The usage of ultrasonic meters for custody (fiscal) applications has grown substantially over the past 8 years. This is primarily due to the confidence operators have gained in the performance and reliability of ultrasonic meters as primary measurement devices and also various standards released by metrology agencies in the world. As with any type of metering technology, design and operational issues need to be addressed in order to achieve optimum performance. It is well understood that the best technology will not provide the expected results, if it is not installed or maintained correctly. This paper details out the validation methodology adopted for Gas Ultrasonic Meter in order to attain optimum performance while ensuring that accuracy, reliability and maintainability of the meter is not compromised in an installation in Shell Sarawak Berhad in Miri, Sarawak. One of the most significant benefits was the reduction in calibration requirement, due to the fact that the USMs accuracy can be diagnosed without taking the meter out of service using a master meter. In addition remote maintenance can also be achieved using dial-up phones, radios, or other communication techniques. These benefits and others provide the operator with significantly lower Operating and Maintenance costs.

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