4 replies to this topic

[nishantril]

hi everyone..

I wanted to know the specific and peculiar application of coriolis flowmeter in industries...I have seen in industries that coriolis flowmeter is used for HCL,EHTYLENE and CHLORINE..? why so?

[curious_cat]

Why? One reason, because it's one of the few sensors that's a true mass flow sensor.  A lot of other mass flow meters are actually volumetric sensors or some other derived function. Those need calibration & compensation for T, P, composition etc.

 

Coriolis is more robust against bubbles, flow patterns, etc.  The same meter can also measure multiple fluids without recallibration. No constraints on conductivity, viscosity etc.

 

Coriolis meters tend to be highly accurate too. I've seen 0.05% accuracy of reading been offered. 

 

Another minor reason, you get a "free" density reading too. 

[Shivshankar]

Also, corrosion is the big factor in these fluids. The material used in Coriolis flowmeter tubes must be compatible with HCL, Ethylene and Chlorine to avoid corrosion.

 

For more details, refer below link

 

http://www.documenta...ts/gi-00415.pdf

Edited by Shivshankar, 30 November 2013 - 08:14 AM.

[JMW]

Another reason for coriolis is commercial.

Today the business model is that of the single source supplier. Gone are the days when there was sufficient time and money to spend looking for the best technology from the best manufacturer of that technology at the best price - such used to be the case but proves very expensive for both suppliers and clients. 

The start of the change came with "standardisation" and "approved vendor lists".

So today when an engineer needs a flow meter he simply submits his application details and the single source supplier will quote a suitable meter. This no longer has to be the best technology or the best version or even the best unit price, it just has to work. In such circumstances manufacturers prefer to manufacture and invest in as few technologies as possible - hence a good reason for coriolis is that it is one of the most universal of the various technologies. And this is where the money will be invested in R&D in making it more universal.

You may find that for any application that if you post the query in any of the sites someone will come back and say "coriolis is the best". What they really often mean is that it will work in that application.

As an instrument engineer or a plant engineer sourcing anything from temperature sensors to pumps etc. you may find that your choices are going to be increasingly limited by what purchasing will allow you to buy.

[nishantril]

Curious_cat:

 

thank you