Product category:
Coriolis mass flowmeters
News Release from: Invensys Foxboro | Subject: Foxboro Coriolis CFT50
Edited by the Processingtalk Editorial
Team on 25 February 2005
Accurate chocolate batch flow by Foxboro
Coriolis
Many leading confectionery processors have at last found a reliable answer to the problematic liquid / gas flow measurement of chocolate in batches, measuring start-up and end flows accurately
Any material that contains both liquid and gas poses serious measurement problems And chocolate is one of the worst offenders
This article was originally published on Processingtalk on 25 Jul 2003 at 8.00am (UK)
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Its entrained air spawns a host of production problems including process interruptions and downtime, wasted material, costly reworks, poor product quality and expensive workarounds.
This is especially a problem with batch processing when starting or finishing with an empty tube.
Many leading confectionery processors have at last found a reliable answer to this problematic liquid/gas flow.
The innovative Invensys Foxboro CFT50 digital Coriolis flow transmitter uses breakthrough technology to accurately measure flows containing entrained gas, without stalls, or stoppage even when starting or finishing batches with an empty tube.
This CFT50 patented software-based system uniquely prevents the erratic flowtube vibrations that cause measurement failures with problem liquid/gas flows.
The transmitter maintains a digitally precise flow measurement, while simultaneously retuning the drive of the Coriolis flowtube every half-cycle of the drive frequency.
Developed by Invensys in a collaborative effort with Oxford University, this innovative approach to digital Coriolis flow metering is based on several key advances.
The flowtube drive signal is digitally synthesised, providing excellent meter control in challenging conditions.
And dynamic response is swift.
Independent trials show the meter can respond to a step change in flow within 25 milliseconds (versus traditional response times measured in the tens of seconds), as its sophisticated algorithms correct for the effects of entrained gas.
Users confirm that the CFT50 transmitter shows a "remarkable ability" to meter viscous materials accurately during the difficult startup and end phases of their batch processes.
It provides batch flow measurement estimated as accurate to within half a percent - other meters do well to get within ten percent.
As a result, the plant can dispense with pre-measurement line packing, air elimination systems, and other costly, time-consuming workarounds.
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