Denny Nelson explains how the latest guided wave radar technology can improve interface level measurement accuracy by halving the minimum detectable thickness of the upper product.

Periodic proof-tests are a necessity for level switches that form part of a safety instrumented system (SIS) and partial proof-tests provide a safe way to optimise the time interval between full tests. Marianne Williams compares different ways of performing partial proof-tests.

Despite the vital role played by flow meters in the oil & gas industry the meter management sills gap continues to grow, argues Alick MacGillivray.

Fraser Higgins explains why variable area flowmeters should not be overlooked when a simple yet versatile flowmetering solution is required.

Refineries need to improve profitability to stay competitive in today’s market. Delayed coking for heavy and sour oil refineries is potentially one of the most profitable operations available to refiners, says Raimar Hellwig.

Mark Nymeyer discusses the advantages and limitations of butterfly valves, and highlights developments that are making them more suitable for flow control.

Paul Hobden looks at the challenges surrounding process control in potentially explosive atmospheres and how they can be overcome.

Control Engineering Europe finds out about I/O device developments which ensures they are prepared to work as part of a digital enterprise.

A phased control system modernisation solution for a production line has offered a better return on investment for one castings Manufacturer. Control Engineering Europe reports.

A phased control system modernisation solution for a production line has offered a better return on investment for one castings Manufacturer. Control Engineering Europe reports.

Low and mid frequency non-contacting radar devices can now be complemented by high frequency technology. Per Skogberg explains which of these might be the right solution for a particular level measurement application. 

José Leonett discusses the changing flow metering needs of the process industry to allow it to meet current and future challenges.

Is the process industry ready for instrument adjustment and diagnosis with Smartphones or Tablets?

Bitumen is the glue that transforms aggregates into asphalt. It needs to be delivered in accurate doses, which is not possible with traditional mechanical flowmeters. Carl Pinches suggests a solution.

Henk van der Bent describes how a multivariable pressure transmitter with built-in dynamic compensation can correct many of the errors and inaccuracies that occur in differential pressure based flow measurements. He also explains how modern flowmeters can ensure ease of integration with FDT technology based tools.

Pawel Czoczys explains how the latest digital differential pressure level technology is able to solve many of the problems traditionally experienced when using differential pressure measurements to monitor levels in tall vessels or towers. 

Optimised foam control and reduced process costs can be achieved through the use of a measurement solution developed specifically for the task, says Steve Gallagher.

Dr Norman Glen, principal consultant at NEL, explains how the use of synthetic reference fluids can help improve flowmeter calibration accuracy. 

Ian Collins, product manager for West Control Solutions, explains why limit devices are required in temperature control applications and describes how they work. He also explains why they reduce risk.

Diagnostics from smart valve actuators using HART communication can save maintenance costs and improve plant reliability when used in a comprehensive maintenance management program, says Herman Storey, chief technology officer of Herman Storey Consulting. This is often the first big victory of a program.