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Non-contacting radar level transmitter for hygienic applications

04 July 2021

To meet the need for highly accurate and reliable level measurement in hygienic applications, Emerson has developed the Rosemount 1408H level transmitter, a non-contacting radar device with IO-Link connectivity, designed for hygienic applications. 

Non-contacting radar is a good level measurement technology for applications where hygiene is paramount. It is virtually maintenance-free, it has a top-down installation that reduces the risk of product loss through leakage, and it is unaffected by process conditions such as density, viscosity, temperature and pH. 

The compact 1p69-rated sensor is suited to use in small tanks and space-constrained skids. The hygienic antenna is flush with the process connection that ensures the removal of process residue during CIP and SIP processes and is insensitive to condensation and build-up. 

The sensor uses 80 GHz frequency modulated continuous wave technology on a single electronic chip with embedded smart algorithms. This enables exceptional radar beam focusing, so that internal tank obstructions, such as agitators can be avoided, and greater measurement accuracy achieved. The technology also enables measurements all the way to the top of the tank, with the elimination of radar dead-zones enabling users to maximise vessel utilisation.


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