Mass flow meter
Mass flow meter
(OP)
Hello all!
Has anybody long term experiences with mass flow meters? We are planning to measure slurry amount by using above meter and total counter instead of weighing to whole tank truck. I know that accuracy of such meters are up to 0.10 % which is enough, but how sure can I be with the usability?
Khrone and Endress+Hauser are quite good alternative, can You recommend any other?
Our stuff is kaolin slurry, solids 50-72 %, density 1,5-1,8 kg/l, viscosity 50-400 mPa.
Thanks!
Has anybody long term experiences with mass flow meters? We are planning to measure slurry amount by using above meter and total counter instead of weighing to whole tank truck. I know that accuracy of such meters are up to 0.10 % which is enough, but how sure can I be with the usability?
Khrone and Endress+Hauser are quite good alternative, can You recommend any other?
Our stuff is kaolin slurry, solids 50-72 %, density 1,5-1,8 kg/l, viscosity 50-400 mPa.
Thanks!
Best slurry in town
http://www.chemec.fi/





RE: Mass flow meter
The manufacturers you suggest are good starting points. There are several manufacturers out there, so a simple internet search will give you names of others.
RE: Mass flow meter
We install the meter ALWAYS vertical, so it will empty properly and hopefully it is full when loading. Of course, the vibration and turbulence is always a problem but I hope that with good installation, the system will work.
Best slurry in town
http://www.chemec.fi/
RE: Mass flow meter
Foxboro have a range of straight tube Coriolis meters which may be suited to your application. As TrevorP says, they have two relatively narrow tubes within the straight housing, so discuss with the manufacturer for applications involving solids.
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If we learn from our mistakes,
I'm getting a great education!
RE: Mass flow meter
= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm
RE: Mass flow meter
We have several micromotion units in solvent service but we have a lot of problems with calibration when we blow them dry. They do not seem to like that. Discuss the fact that your flow meter will be empty part of the time. This has been a big issue for us.
Good luck.
StoneCold
RE: Mass flow meter
RE: Mass flow meter
These coriolis meters are of a high quality and very accurate.
regards, Kingsss
RE: Mass flow meter
RE: Mass flow meter
Coriolis normally have the problem of not being self-draining, and this is a must; you have also to consider that you ought to keep a reasonably high velocity (5+ fps) and a turbulent flow to avoid settling in the sensor, whichever the plant rate.
RE: Mass flow meter
Foxboro has introduced a mass flow transmitter with digital technology that allows standard Coriolis flow meters to continue operating during two-phase flow, which happens when air is introduced into the liquid flow stream.
The traditional problem has been the impact of entrained air, which can interrupt measurement for tens of seconds and stall or shutdown the flow tube.
... CFT50 demonstrations at the ISA conference. The flow tube was started up from empty and then later, flowing with water, compressed air was introduced. The air started from a small amount and was increased to 60%. The tube continued accurately measuring the flow. The speed of response was in 'tens of milliseconds.'
http://www.manufacturing.net/ctl/article/CA259207
Cheers,
CARF