Krohne Optimass 6400 twin bent tube Coriolis mass flowmeter

The Optimass 6400 is a twin bent tube Coriolis mass flowmeter designed to meet standard liquid and gas applications in the chemical and petrochemical, oil, gas, pharmaceutical, food and beverage, and energy industries.

The product features advanced entrained gas management (EGM). In the past, gas entrainments in liquid media presented a challenge for mass flowmeters because the relative movement between gas and fluid dampens the amplitude of the measuring tube. This dampening leads to inconsistent sensor amplitudes, which interfere with the electronics’ ability to determine the actual resonant frequency. With EGM, the flowmeter is able to follow and correct for the varying amplitudes. This is achieved for entrained gas up to 100% of volume and continues to present an actual reading, together with an indication or configurable alarm for the user.

Compliant to NAMUR standard installation lengths, the product is available in sizes DN 08-250 and covers high temperatures up to 400°C, as well as cryogenic applications down to -200°C. It also handles pressures up to 200 bar (2900 psi).

These specifications, together with the feature of EGM and custody transfer approvals for both liquids (OIML R-117-1/MI005) and gases (OIML R137/MI002), make the product suitable for process industries and specialist applications like LNG, CNG or supercritical gases in terminal or storage/bunkering, along with custody transfer applications. The Optimass 6400 is available in stainless steel 316L, Hastelloy C22 and Duplex steel UNS S31803.