Coriolis mass flowmeter suitable for low flow rates
March 2003Flow Measurement & Control
Information Security
A new design of single Z tube Coriolis mass flowmeter created specifically to handle low flow, has been launched by Krohne.
The Series 71, an innovative range of Z tube meters, is part of Krohne's new Optimass mass flowmeter family. Designed primarily for low flow applications, the single Z tube Series 71 is suitable for blending, dosing and batching applications. The meter is available in three sizes with wetted parts in stainless steel and Hastelloy and is suitable for flow rates from 0,3 kg/h up to 455 kg/h (0,66-16,5 lbs/min).
Series 71 meters have small footprints for easy installation and are available with standard 1/4" NPT or hygienic connections. They also incorporate secondary pressure containment and there is the option of a heating jacket. The series is manufactured in accordance with European Pressure Directives (PED) as well as Cenelec, ATEX and FM standards, making it suitable for use in hazardous environments.
Also launching as part of the new Optimass family is the Series 70, a range of straight tube meters to cater for a broad selection of flow rates and applications.
Krohne's new range of Optimass mass flowmeters incorporates an innovative new design of electronics which provides excellent flexibility. The main converter can be mounted integrally or remotely at a distance of up to 300 m, and requires only standard core cable, while competitive systems can require up to 10-wire cabling.
A sensor signal processor (together with the main converter) is mounted permanently on the meter with direct connection to the sensors. Both sets of electronics store the sensor data so that should the need arise to change either set, the data can simply be downloaded. The electronics are of modular design so that they will fit any of the meter sizes within the Series 71 range, reducing spares stocking requirements.
All meters in the Optimass family have been rigorously tested. Both Series 70 and Series 71 have been comprehensively trialled at major chemical, pharmaceutical and food and beverage sites in Europe to measure the mass flow of substances, such as margarine, coffee extract and pesticides and are delivering previously unattainable levels of performance.
For more information contact Gordon Duff, Krohne, 011 315 2685.
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