Measurement flow
Measurement flow
(OP)
I'm slightly confused.
We've encounted rather a complicated situation incuding the following items:
1. As everybody knows, the existing measuring methods applying restrictions are not always acceptable. When we talk about large amount of mechanical and other admixtures, impulse lines are very often plugged, besides the medium contains H2S which is a very dangerous factor for servicing personnel.
It seems that all the factors do not allow us to choose anything else but Vortex and Ultrasonic flow meters as well as other up-to-date methods.
2. Legislation of the country where we work requires an obligatory annual inspection of all measuring instruments. On the other hand, company's management won't even consider the issue of annual process line shutdowns operating on a twenty-four hour basis only for their calibration (say the same Vortex or Ultrasonic cannot be calibrated other than removing it and installing in the line with a flow meter which accuracy rating is higher).
Do you have any ideas how we could solve this issue?
We've encounted rather a complicated situation incuding the following items:
1. As everybody knows, the existing measuring methods applying restrictions are not always acceptable. When we talk about large amount of mechanical and other admixtures, impulse lines are very often plugged, besides the medium contains H2S which is a very dangerous factor for servicing personnel.
It seems that all the factors do not allow us to choose anything else but Vortex and Ultrasonic flow meters as well as other up-to-date methods.
2. Legislation of the country where we work requires an obligatory annual inspection of all measuring instruments. On the other hand, company's management won't even consider the issue of annual process line shutdowns operating on a twenty-four hour basis only for their calibration (say the same Vortex or Ultrasonic cannot be calibrated other than removing it and installing in the line with a flow meter which accuracy rating is higher).
Do you have any ideas how we could solve this issue?





RE: Measurement flow
Build your plant in another country...
that said there is a great deal of interpretation of the word "inspection"
in the case of a vortex meer, it could simply be a loop check rather than a flow test. sounds like you need a bit of creative interpretation of what is needed.
In any event you can consult the operating manual of the meter, or call the supplier, to document what constitues an inspection.
critical meters (or transmitters in some cases) can always be installed on a redundant basis, so that testing can be performed without taking a shut down.
RE: Measurement flow
Normally manufactures will not suggest for calibration of Vortex flow meter frequently.
The max thing is, we can calibrate the Remote converter section.
Unless until we are having a Flow Calibration Lab we can not calibrate the sensor section.(bench calibration)
Hope I am right.
Expecting other views
Thanks sjstn
RE: Measurement flow
RE: Measurement flow
RE: Measurement flow
RE: Measurement flow
RE: Measurement flow
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RE: Measurement flow
The only problem with this is getting vrification of the clamp-on meter's accuraccy with the process fluid, which is usually done as part of the commissioning activities.
RE: Measurement flow
If, on the other hand, you design your plant ignoring such a requirement, then you will have problems.
TTFN