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application and the conditions around the measuring point. T at’s why Endress+Hauser decided on a common sense approach rather than claiming “one frequency fi ts all”. Our portfolio encompasses a set of measuring devices operating at diff erent frequencies, using intelligent application-optimised software such as dust build-up monitoring and related hardware options such as dust purges, silo alignment tools and high-temperature protection. Starting from the challenges of our customers we want to provide them with the ideal solutions based on the industry expertise of employees and clever design of products.

Can you give us more details on other factors customers should have in mind before deciding on a radar level instrument?

AR: Yes, of course. For example, take a holistic approach to selection. Look at the silo design, shape, age, condition and how the medium fl ows in, through and out. Do you experience poor fl ow conditions in your solids or powder silos? Do you often suff er from froth spilling over in fl otation tanks or overspill from tailings dams or worse, out of dangerous chemical tanks or biomass fuel digesters? Do you get a water cut or emulsion in your fuel oil storage tanks? Depending on these and many other site conditions, installation of a level device could become very complicated.

And what about the trend towards Industry 4.0 or the IIoT?

AR: With mines needing to optimise their processes to raise their eff ectiveness and lower costs, process automation and digitalisation of course plays a role. We see the smart use of measurement data as a fi rst step towards Industry 4.0. T at’s why we developed the innovative Heartbeat Technology that is included in the Micropilot FMR6x series. It ensures trouble free plant operation during the sensor’s entire life cycle by combining self- diagnosis, approved verifi cation and process condition monitoring functions. But with the IIoT trend the functional safety of the instrument is also becoming more relevant.

Andrew Reese, global industry manager for Primaries & Metal at Endress+Hauser

What do you mean by that?

AR: Industry 4.0 or IIoT means a higher degree of automated processes, which means plant operators must be sure that they can rely on their instruments. Functional safety provides the assurance that the safety-related systems will off er the necessary risk reduction required to achieve safety for the equipment. Integration of fi eld instruments that can be used in HAZOP-defi ned Safety Instrumented System (SIS) zones is included in this safety guideline under IEC 61511. Each zone and each fi eld instrument has a risk class or Safety Integrated Level (SIL) from 1 to 4. T e steel, oil and gas industry, nuclear plants and the machinery sector, to name but a few, all rely heavily on functional safety to achieve safety for the equipment giving rise to the hazards. But I am convinced that this is already changing in the mining industry. We at Endress+Hauser are already prepared for this development as our instruments are developed according to international guidelines and can be used in SIL2 and 3 areas. What this means for our customers is that they can integrate our instruments into their process with minimal certifi cation or testing eff orts. ●

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