Level Measurement & Control


Liquiphant innovation from Endress+Hauser

August 2011 Level Measurement & Control

Vibrating level switch for accurate limit detection.

With the launch of Liquiphant in 1983, Endress+Hauser became inventors of the world’s first vibrating level switch for accurate limit detection and point level measurement of liquids. This reliable and cost-effective measurement method proved to be a winner and, by the year 2000, more than 1 million units had been sold.

Liquiphant M has a patented piezo drive, offering improved immunity to both foam and plant vibration with a small process connection for applications where space is at a premium. It can be mounted in any orientation, is maintenance-free and operation is unaffected by flow, turbulence, air bubbles or build-up, making it particularly suitable as a direct replacement for float switches.

Ideal for the food and pharmaceutical industries, Liquiphant M offers EHEDG and 3-A certification. With a polished fork and easy-to-clean hygienic process connections, it provides high or low level alarms in a wide range of processes from whiskey distilling to sauce production. The chemical and petrochemical industries expect ATEX EEx ia and EEx d as a minimum. Liquiphant M has lower power consumption and so conforms to the NAMUR industry standard. Its new integral function check allows it to be remotely tested without being removed from the process.

More than just a level switch, Liquiphant M complies with the requirements of IEC 61508, returning figures that typically fall within the SIL2/3 rating, making it a good choice for inclusion as part of Safety Instrumented Systems. The unique fork corrosion monitoring system ensures an alarm to ensure consistent measurement integrity and product quality.

For more information contact Lita Mpahlwa, Endress+Hauser, +27 (0)11 262 8000, [email protected], www.za.endress.com



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