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New technology: Krohne launches ‘highest capacity’ Coriolis flowmeter


Krohne has announced the introduction of new large line sizes as standard for its OPTIMASS series of flowmeters, including an addition which the company claims is the “highest capacity” Coriolis flowmeter on the market.

For the OPTIMASS 6400, diameters DN150/6” and DN200/8” have been added, while the OPTIMASS 2400 is now available up to DN400/16”.

According to Krohne, the new large line sizes are targeted at the oil & gas and petrochemical industries. Typical applications for the new large line sizes include bulk hydrocarbon loading and bunkering as well as LNG/cryogenic or high temperature applications.

Significantly, the new additions to the OPTIMASS series feature gas and liquid MID and OIML custody transfer approvals and compliance with API and AGA guidelines, SIL 2/3 functionality and NE 107 diagnostic functions. The new large line sizes also feature Entrained Gas Management (EGM), offering continuous and repeatable mass flow or density measurement over a wide range of gas fractions and complex flow conditions. The meters indicate and maintain operation with 2-phase flows such as liquids mixed with gas, slurries with gases of highly viscous fluids with gas entrainments.

The OPTIMASS 6400 DN150/6” and DN200/8” share the dual bent tube design of their smaller sizes, while OPTIMASS 2400 DN400/6” is actually a completely new design. The dual straight tube has been extended to a four straight tube design for flowrates up to 4,600t/h/169,021lb/min, which Krohne is claiming makes it the highest capacity Coriolis flowmeter on the market. The flowmeter’s accuracy is 0.1% with a turndown of 20:1, and an optional 0.05% “flat” accuracy with a turndown of 10:1.

Krohne states that the OPTIMASS 2400 flowmeter is suitable for field proving with small volume prover. In-situ calibration, verification and documentation with the OPTICHECK verification tool is also possible.