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New Industrial Products

Variable area flowmeter

has received more than 30 Ex-approvals

Posted on January 20, 2014 - ( views)

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With the north american FM approvals for the ignition protection types „intrinsically safe“ (IS) and „non-incendive” (NI), KROHNE has now received the last pending approvals for hazardous areas for the H250 M40 variable area flowmeter. Since its introduction in 2011, the H250 M40 has achieved more than 30 approvals worldwide for hazardous gas and dust areas, including ATEX, IECEx, usFMc, NEPSI, INMETRO, KGS, GOST-R and PESO/CCOE.

H250 M40 combines the main types of explosion protection in one device: it can be used in any suitable application that requires intrinsically safe or non-incendive wiring strategies or as well for dust-ignition or explosion proof installations. Together with the worldwide approvals, the flowmeter is therefore the first choice for large international companies that have a stringent explosion protection strategy for all plants but also need the respective local approvals. The same goes for OEMs that can fulfill requirements of different customers with just one device.

All available indicator variants can be supplied with all available approvals: starting with pure mechanical flow indicators, the devices can easily be upgraded with 1 or 2 limit switches (NAMUR, Transistor or Reed), a 4...20mA signal output with HART, a graphical LCD with totalizer and pulse output or finally with a digital, bus-powered communication interface according to FOUNDATION Fieldbus or PROFIBUS PA standard – all onsite, without interrupting the process. H250 M40 is also the first variable area flowmeter to offer a stainless steel housing with explosion proof (Ex d/XP) enclosure, dedicated for the oil&gas industry.


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About : Krohne Messtechnik GmbH

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Ludwig-Krohne-Straße 5

47058 Duisburg

Tel.: +49-203-3010
Fax: nofax+49-203-301300


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