Emerson Process Management
Aug 29, 2011
Coriolis flowmetersMicro Motion Coriolis flowmeters are being used by Cryostar in its fuel dispensers for liquefied natural gas (LNG)-powered vehicles. Cryostar, a leading provider of advanced technologies for LNG applications, chose the flowmeters not only for their inherent accuracy, but also because regulatory organizations in Europe, Asia, Australia, and the U.S. have approved the meters for measuring cryogenic fluids in custody transfer applications.
The Cryostar dispenser, which has a 99.5% accuracy, has been approved by the relevant Weights and Measures departments in many world areas to the appropriate standard. These include MID (Europe) and Nederlands Meet Instituut (NMI) for Australia and Asia. Cryostar is also seeking National Type Evaluation Program (NTEP) approval for North America. MID certification means when Emersonís compact flowmeters are used as a component of a complete measuring system, such as the Cryostar fuel dispenser, it is not necessary for the dispenser manufacturer to type test and certify the devices Ė saving both time and money.
The Cryostar dispenser uses a Micro Motion ELITEģ CMF100 flowmeter to determine mass flow, eliminating the separate fluid density compensation required by traditional volumetric technologies. This reduces costs and measurement uncertainty while simplifying installation. Additionally, Micro Motion meters do not require straight pipe runs or flow conditioning devices, enabling compact and efficient skid-based metering designs.
Micro Motion meters are ideally suited to cryogenic applications for dispensing LNG fuel to motor vehicles. They have no moving parts, enabling the meters to deliver improved system reliability and increased plant availability. Using Micro Motion Coriolis meters for LNG dispensing provides operators with accurate, real-time, in-line measurement data, while meeting the ATEX safety limitations.
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