Chris Hardy


Process Instrumentation and Sensors October 22, 2014

Optimizing drum level measurement

How can steam drum level be controlled to maximize both stability and responsiveness? The best method is to feed forward (FF) the steam flow to the level PID loop and cascade the output of that loop to the setpoint of a boiler feedwater (BFW) and flow loop. Three element (3E) steam drum level control uses level and two flow measurements. See three diagrams.

By Chris Hardy
Energy Efficiency September 2, 2014

Density compensation for steam drum levels

This week's blog is all about accurately measuring and reporting level in steam drum.

By Chris Hardy
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