Krohne H250 M40 flowmeter

Since its introduction in 2011, the Krohne H250 M40 flowmeter 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., and has recently received North American FM approvals for the ignition protection types IS and NI.

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 suitable for large international companies that have a stringent explosion protection strategy for all plants but also need the respective local approvals. OEMs can fulfil 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 one or two limit switches (NAMUR, transistor or reed), a 4-20 mA signal output with HART, a graphical LCD with totaliser and pulse output or with a digital, bus-powered communication interface according to Foundation fieldbus or Profibus PA standard - all on site, without interrupting the process. The H250 M40 also offers a stainless steel housing with explosion-proof (Ex d/XP) enclosure, dedicated for the oil and gas industry.