Research being carried out under the NEL/Coventry University EngD programme is developing a process that will improve the performance of Coriolis metering technology in real-world conditions. This breakthrough has been made possible thanks to an ongoing partnership with a leading meter manufacturer.
Over the past two years, Control Systems and Software Developer Gordon Lindsay has been researching how ambient air temperature fluctuations can distort the data output from Coriolis Flow Meters.
“Results obtained using our Very Low Flow single phase facility, have clearly shown significant drift in the calculated fluid density when a Coriolis meter is subjected to fluctuations in the temperature of surrounding ambient air,” Gordon says.
“Using the high-resolution data sets obtained from this test program, we’ve been developing a solution to live compensate for these ambient temperature effects,” he explains. “We have developed a set of intelligent temperature correction algorithms that account for a wide range of variables and work over a range of fluid types.”
According to Gordon, his link-up with an industrial partner has allowed him to gather significantly more data. “We were given access to the company’s meters and the internal calculations that underpin their operation,” he says. “This allowed us a deep understanding of the processes involved.”
The research is now moving into its final stage, which will include a programme of blind-testing. This will be done over 2018.
The research is specific to one type of Coriolis meter, but it could be extrapolated to other sizes and variants. The algorithms Gordon is developing will give end users confidence that the fluid density reported by a meter is stable and that the performance of any system relying on such a meter (such as a PID control system) will not be adversely affected when the ambient air temperature surrounding the meter varies. The potential cost savings that will result from more efficient control and monitoring of fluid processes are considerable.
The four-year Engineering Doctorate (EngD) that Gordon is following is supported by expertise from Coventry University and NEL.
For more details, contact Gordon Lindsay
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