Empty tank alarm on yogurt culture vessels
The plant installed vibrating “diapason” level switches in the four yogurt culture tank discharge lines and used them to automate changeover and/or shutdown when the tanks were empty. As the product is viscous, the tuning forks sometimes do not signal "voids" due to the product bridging between the tuning forks. This caused the discharge pumps to run dry and downstream production unexpectedly. We were asked by the controls integrator if Anderson could provide a sensor that is less likely to "smudge" the application.
We provide a sample LS sensor with a tri-clamp fitting for testing in the application. Since the LS does not depend on a change in vibration frequency and only requires a change in capacitance to trigger, we felt confident that it would change the moment the tube was no longer full. As expected, it performed flawlessly for several cycles when they ordered 3 more to replace the remaining competitive units.
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