Coriolis Flow Meter - CR4 Discussion Thread

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msn Commentator Join Date: Oct 2009 Location: Michigan Posts: 73	Coriolis Flow Meter 02/04/2013 7:08 AM
	My doubt is regarding coriolis flow meters. This doubt is generic for all flow meters provided by Rosemount ; I am giving just one example for understanding. For model CMF025 (Micromotion Elite series) offered, end connection is 1", 300#. Tube size is ¼". If end connection is 1" then from where exactly tube of ¼" is installed in flow meter? And if tube size is getting reduced by almost 1/4^th times then how come there is not much pressure drop? In this case I am getting "P" drop of 0.003 kg/cm2 for flow of 60 kg/hr. __________________ Be happy :)
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#1 Re: Coriolis flow meter 02/04/2013 7:17 AM
	How did the call with all this information to the sales contact go? __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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msn Commentator Join Date: Oct 2009 Location: Michigan Posts: 73	#4 In reply to #1 Re: Coriolis flow meter 02/05/2013 7:56 AM
	Agreed !!! Since I was not able to contact sales person i had to put this question over here . I was looking forward for answer because MICROMOTION ELITE series is widely used flow meter series. __________________ Be happy :)
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#5 In reply to #4 Re: Coriolis flow meter 07/20/2017 8:28 AM
	<...was not able to contact sales person...> Nonsense. Use the telephone instead of sending e-mail. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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msn Commentator Join Date: Oct 2009 Location: Michigan Posts: 73	#6 In reply to #5 Re: Coriolis flow meter 07/20/2017 11:08 AM
	looks like you have lot of time to dig out previous forum and post offensive reply. No one is forcing you to reply ..at least not to my queries no matter how basic those are. __________________ Be happy :)
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JNB Guru Join Date: Aug 2012 Posts: 1071 Good Answers: 92	#2 Re: Coriolis flow meter 02/04/2013 8:20 AM
	Micromotion Elite series coriolis sensors have a given tube size that needs to be accounted for when spec'ing the item. Keep in mind that there are actually TWO parallel tubes inside the body of each sensor, so your figure is incorrect either way- you have 2 x 1/4th the diameter of tube or 1/8th the total nominal cross section area compared to the pipe size. The input tube changes to these sizes within the large containment section of the sensor. Unless you post the specifications of the product you are putting through it (viscosity, temperature, specific gravity- is it a different colour on Tuesdays?) no one here can help you accurately with your calculations, and you would be best to talk to Rosemount or the local rep. These sensors have an excellent turndown ratio for accuracy, and it is often more important to make sure that the complete range of anticipated flows is within the linear response range of the sensor than to match the pipe size- probably why they offer different ends for each sensor. So you have to match accuracy needs against the flow restriction of each size and find your optimal point. So a 1/4" sensor on a 1" pipe will give you better low flow accuracy than a larger sensor, at the expense of more pressure drop under higher flow conditions. I will say that I've found their specs accurate in the past.
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lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#3 Re: Coriolis Flow Meter 02/04/2013 9:12 AM
	All flow meters provided by Rosemount are not the same. They do have technical help available and I'd suggest that you seek it. They can teach you the basics. There are hundreds of web sites: How Do Flow Meters Work - Flowmeter Types And Operation How Do Flow Meters Work? \| eHow.com How does a volumetric flow meter work? - YouTube ► 1:26► 1:26 More videos for how do flow meters work » Flow measurement - Wikipedia, the free encyclopedia Jump to Ultrasonic (Doppler, transit time) flow meters‎: How Do Flow Meters Work
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Users who posted comments:

JNB (1); lyn (1); msn (2); PWSlack (2)

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