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Product : Stability and Foamy Slag Indicator



The stability and foamy slag indicator is based on harmonics calculations.

A FFT is performed on each phase and four +/-10V analog outputs are delivered to a PLC for example.

Out 1 – 2 – 3 : Phases 1 – 2 – 3 Stability index

Out 4 : Foamy Slag Indication (0 – 100%) 100% 0 is no foamy slag and 100% is excellent foamy slag.


FFT Calculation

FFT Calculation


Stability Index

Stability Index


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ELARC S.A. - 20, Rue de Hollerich L-1740 Luxembourg
Phone: (+352) 691 945 596 - Fax: (+352) 24 611 003
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