Battery Room Flowmeter Selection

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josej Power-User Join Date: Mar 2008 Location: Mumbai Posts: 250 Good Answers: 2	Battery Room Flowmeter Selection 07/20/2010 7:58 AM
	Hi, There is a Battery Room With Exhaust Fan -Motor with Duct diameter 8.0" Typically ) arrangement , I would like to monitor the flow at the Discharge side of the duct--- which flow instrument (switch type preferably coz i dont know process conditions ) should i use for this application we are not in a position to have straight run requirements Regards jose john
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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: Battery Room Flowmeter Selection 07/21/2010 3:45 AM
	A paddle-type switch might be applicable. Endress + Hauser (usual disclaimer)? __________________ "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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josej Power-User Join Date: Mar 2008 Location: Mumbai Posts: 250 Good Answers: 2	#2 In reply to #1 Re: Battery Room Flowmeter Selection 07/21/2010 4:06 AM
	Thank You,I really needed some inputs on that Regards Jose
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HiTekRedNek Guru Join Date: Oct 2006 Location: 44.56024"N 15.307971E Posts: 8277 Good Answers: 270	#3 Re: Battery Room Flowmeter Selection 07/21/2010 7:45 AM
	A stack switch like is used on gas-pack heat systems should work.I presume you simply want to know if you have flow or not, and to activate a switch. These stack switches are commonly available at any HVAC supplier, and fairly cheap. __________________ "A man never stands so tall as when he stoops to help a child." "Never argue with a stupid person.They will drag you down to their level and beat you with experience" "To create an apple pie from scratch, first you must create a universe"
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Elroy Power-User Join Date: Feb 2010 Location: The Great White North Posts: 185 Good Answers: 13	#4 Re: Battery Room Flowmeter Selection 07/21/2010 7:46 AM
	I've had better experience with solid state sensors similar to this one by IFM. I'm sure other manufacturers make them as well. There are no moving parts and the setpoints are adjustable. Best of luck __________________ Knowledge makes what was impossible, seem easy.
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Carl_E Power-User Join Date: Nov 2009 Posts: 335 Good Answers: 63	#5 Re: Battery Room Flowmeter Selection 07/21/2010 5:17 PM
	Air flow can be proven by a differential pressure switch, plumbed with flexible tubing to either side of the fan. Usual problem is knowing what range switch to pick. If you can't beg, borrow, or steal a DP gauge, you could even make a water U tube manometer from a piece of flexible transparent tubing, so you can get an idea of what range you'll need. http://www.dwyer-inst.com/Products/TOC.cfm?MainCategory_ID=1&iCurrentCategoryID=292
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Carl_E (1); Elroy (1); HiTekRedNek (1); josej (1); PWSlack (1)

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