Flow Measurement

bigben2k · 09-01-2003, 12:27 AM

Here is where we discuss Flow Measurement.

Flow can be measured along with Pressure (discussed here) either for finding out a block's flow characteristics, or while measuring the performance.

nikhsub1 · 09-04-2003, 03:00 PM

Analog, maybe BillA knows how well this unit works, calibration comes to mind.

http://overclockers.com/articles752/

Zhentar · 09-04-2003, 04:11 PM

a big question here is analog or digital. An analog unit like that is cheap and I beleive reasonably accurate, but it also introduces huge head loss. Digital paddlewheels on the other hand will have much loser head loss, but I don't know about their accuracy, and they are much more expensive.

bigben2k · 09-04-2003, 07:18 PM

My painful discovery charted here may be of some help.

What I got from it was:

Flow: digital.
Pressure: analog or digital.

But if I set the flow rate at 0.5, 1.0, 1.5, etc, then I have, allegedly, a 5% error source (installation notwithstanding).

Analog: possible?

As for the pressure drop, depending on the unit, it may require a more powerful pump, but that's not really relevant, until you consider the added heat. (IMO)

Note the suggestion from Bill for a magnetic flowmeter. That's a top notch way to do it!

bigben2k · 09-04-2003, 07:25 PM

Note also a link that I posted in this thread, about the meter installation. (2/3 down the page, an off topic discussion with myv65)

Here's the article:
http://www.flowcontrolnetwork.com/Pa.../aug2003/5.cfm

(you may have to register: it's a great magazine anyways, been reading it for more than a year

gone_fishin · 09-04-2003, 07:48 PM

http://www.therm-x.com/Product.asp?Param1=FLRE&Param2=1

It's expensive to do away with the bucket and stopwatch.

09-01-2003, 12:27 AM	#1
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Flow Measurement Here is where we discuss Flow Measurement. Flow can be measured along with Pressure (discussed here) either for finding out a block's flow characteristics, or while measuring the performance. __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101 Last edited by bigben2k; 09-01-2003 at 12:35 AM.

09-04-2003, 03:00 PM	#2
nikhsub1 c00ling p00n Join Date: Jun 2002 Location: L.A. Posts: 758	Analog, maybe BillA knows how well this unit works, calibration comes to mind. http://overclockers.com/articles752/ __________________ :-.,_,.-:'``':-.,_,.-:'``':-.,_,.-:'``':-.,_,.-:'``':-.,_,.-: E6700 @ 3.65Ghz / P5W DH Deluxe / 2GB 667 TeamGroup / 1900XTX PC Power & Cooling Turbo 510 Deluxe Mountain Mods U2-UFO Cube Storm G5 --> MP-01 --> PA 120.3 --> 2x DDC Ultras in Series --> Custom Clear Res "Artificial intelligence is no match for natural stupidity." 1,223,460+ Ghz Folding@Home aNonForums :-.,_,.-:'``':-.,_,.-:'``':-.,_,.-:'``':-.,_,.-:'``':-.,_,.-:

09-04-2003, 07:18 PM	#4
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	My painful discovery charted here may be of some help. What I got from it was: Flow: digital. Pressure: analog or digital. But if I set the flow rate at 0.5, 1.0, 1.5, etc, then I have, allegedly, a 5% error source (installation notwithstanding). Analog: possible? As for the pressure drop, depending on the unit, it may require a more powerful pump, but that's not really relevant, until you consider the added heat. (IMO) Note the suggestion from Bill for a magnetic flowmeter. That's a top notch way to do it! __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

09-04-2003, 07:25 PM	#5
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Note also a link that I posted in this thread, about the meter installation. (2/3 down the page, an off topic discussion with myv65) Here's the article: http://www.flowcontrolnetwork.com/Pa.../aug2003/5.cfm (you may have to register: it's a great magazine anyways, been reading it for more than a year __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

09-04-2003, 04:11 PM	#3
Zhentar Cooling Savant Join Date: Apr 2003 Location: Madison, WI Posts: 225	a big question here is analog or digital. An analog unit like that is cheap and I beleive reasonably accurate, but it also introduces huge head loss. Digital paddlewheels on the other hand will have much loser head loss, but I don't know about their accuracy, and they are much more expensive.

09-04-2003, 07:48 PM	#6
gone_fishin Cooling Savant Join Date: May 2002 Location: Da UP Posts: 517	http://www.therm-x.com/Product.asp?Param1=FLRE&Param2=1 It's expensive to do away with the bucket and stopwatch.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)