The FSM4000’s success in dealing with noisy applications originates with its use of 70 Hz AC excitation of the primary’s magnetic field combined with advanced digital signal processing. The measurement signal has an accuracy of +/-0.5% of rate, and offers a high speed of response.
Results
With dependable flow control readings, the process is now on automatic control, improving production and eliminating troublesome shutdowns.
The outstanding success with the FSM4000 on its first catalyst slurry application in the plant has led additional installations on similar slurry flow control systems. In one case, a higher temperature slurry required a double thickness of the PTFE liner in the magmeter primary, capable of withstanding fluid temperatures as high as 356°F (180°C). The standard PTFE and alternate liners of PTA and hard rubber are suitable for fluid temperatures from -40°F (-40°C) to +256°F (+130°C). These two FSM4000 installations were followed in rapid succession by four more on other plant slurry applications.
These and other environmental improvements at the facility allowed it to reduce total water releases 38% from 1988 to 2002. From 1998 to 2007, it also reduced chemicals released to the environment via surface water discharge by a similar amount, according to federal Toxic Release Inventory data. And, earlier this year, the company won a Green Excellence award from Frost & Sullivan.
About the Author: Robert Mapleston is North American marketing director at ABB Instrumentation in Warminster, PA. Contact: 800-829-6001, instrumentation@us.abb.com or www.abb.us/instrumentation
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