The steel industry is a crucial part of our global economy and supports infrastructure, manufacturing, and other industries. Part of the steel production process involves treating wastewater from the galvanizing process before it is discharged from the steel production plant into the main municipal system for further treatment and then back into the local environment.
A steel galvanization plant in Thailand, Asia, required level measurement for one of their chemical mixing tanks in their wastewater treatment system. Chemicals provide many uses within the wastewater process, including the breakdown of bacteria and other harmful substances that are present in the water before it's discharged back into the local environment.
On the face of it, tank level measurement is a simple application that doesn't usually run into many issues. However, chemical mixing tanks can present harsh conditions for instrumentation, including foam, vapor, fumes, and turbulence from motor blenders.
Engineers at the steel galvanizing plant were using old-fashioned and manual techniques to check the levels of their chemical mixing plants. This was very time-consuming and presented a health and safety risk to staff. To help find a modern solution, they approached Microcems, one of Pulsar Measurement's trusted partners in Thailand.
After looking at the application, engineers from Microcems decided that a PTFE-faced dB6 ultrasonic transducer would be best suited. Upon initial installation, engineers from Microcems encountered a few issues. They found that this was because of the motor blender located within the tank caused the chemicals to be mixed turbulently. In the first test run of the transducer, the level reading fluctuated a lot while the blender was running. Microcems went above and beyond for the end-user by installing a 4" PVC standpipe into the tank, which reduced the ripples that happened while the chemical mixing system was running, ending in a happy result for both the end-user and Microcems.
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