An electric power generating station required a tank level measurement system to prevent the overfilling of remote storage tanks during tank truck deliveries of sulfuric acid, hydrochloric acid and sodium hydroxide.
A Teflon coated radar gauge utilizing microwave pulse technology was selected for two tanks because it combined simple installation and calibration, high accuracy, low maintenance, and was able to withstand the corrosive environment. A bubbler type system was used on a third tank to interface with existing piping and an existing computer system.
Customized tank strapping tables were created to convert the 4 to 20 mA level signal to a readout in gallons on panel meters at the truck unloading station. The level signals were also available to be sent to a control room for remote monitoring.
In addition to the readout in gallons, the panel meter alarm relays trigger a signal tower with three lights and a horn for a visual and audio indication of the storage tank status during the filling operation.
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