Flow meter?

[Synth]

Where can I purchase a flow meter online?

[Amy]

Hi:

http://www.dtekcustoms.com

They are fitted 1/2" - I need some 3/8"

They look decent, don't they?
Cheers Amy -

[WaterPog]

saw a pressure guage and a temp guage, but no flow guage. am I blind?

[Amy]

Originally posted by WaterPog:
saw a pressure guage and a temp guage, but no flow guage. am I blind?

No you are not blind - I am

Cheers Amy -
Saw a few flow meters on the McMaster Carr site, but didn't bookmark the page.

The one I saw on www.overclockers.com was a salvage medical unit - flow was vertical with a green indicator. ( Subject had words Dumpster Diveing )

[RACER]

About Variable-Area Flowmeters
Variable-area flowmeters are often used with air and liquids that have minimal solids content. Because they mount directly in the line of flow, they create a restriction of flow, or pressure drop, which may make them unsuitable in certain applications.
There are several types of variable-area flowmeters, often called rotameters. The most common type has a moveable float that's housed in a vertical, tapered tube; the float moves up and down in the tube in proportion to the rate of flow. They are easy to install and have excellent repeatability, but must be mounted vertically (unless noted) because they use gravity for operation. Most flowmeters have a direct-reading scale that is calibrated and labeled to read in units such as gpm or scfm. scfm is cubic feet per minute @ standard conditions of atmospheric pressure (14.7 psia and 70° F).
Some flowmeters have a correlated scale that reads the distance the float is displaced (usually in millimeters). This reading must then be translated (correlated) into an actual flow rate via charts that are included. The charts take into account temperature and pressure variations and are therefore typically more accurate.
Mc Master Car has hundreds of flowmeters but there big and lota bucks here is a cheap one.
Flow Range, Fits Req'd Scale O'all
gpm Pipe OD Hole Size Ht. Ht. Each

5-40 1" 5/8"— 11/16" 2 5/8" 6" 4349K41 $59.42

[RACER]

Maybe your thinking of a flow indicator rather than a flow meter like this one.

[RACER]

Here is the sweetest flow meter that I found in my search for my meter. Inline programmable flow and temperature meter for liquid 10 mm pipe id. Solid state design - no moving parts. Large, easy to read, digital display .Accurate measurement of low flow volumes
Non-intrusive design - no pressure drop



The part that hoses this = $950.00 http://www.metercenter.com/cgi-bin/w...nk--ca2150.htm

[bach-on]

Hey Racer, why don't you just sell your computer? Then you could afford that flow meter.

[Darkhorse]

Hmmm, that flow indicator looks familiar

Once I can make it water tight I was thinking of installing a IR transmitter on one side and a IR receiver on the other linking it up to a rpm header on the mobo. Still in the early thought stage.

[Amy]

Racer:

Thanks for the link. Maybe the hospital will buy one for me. Using a Peltier to super cool skin lesions before extractions.

Thanks
Cheers Amy -

[RACER]

Darkhorse did you build that flow indicator or buy it somewhere? If you bought it I would like the link to them thanks.
Race

[redleader]

I saw some kickass homemade flow meters on HardOCP a while back. Basically they took an old fan, added fittings and PCV sides so that it was water tight.

You can buy them as well, but the cheapest units I've seen are nearly as much as a cheaper watercooling setup.

[xRated]

u mite wanna look at this
http://www.ocmod.com/code/show_art.php?id=21&pg=1

[BladeRunner]

Quite funny, as the article starts by saying pump death can cause your water-cooling system to heat up and lead to the obvious cpu death etc, if you are away from the PC. Not quite sure how a visable water-flow meter is going to help you much if again you are not watching it? I'm looking to build a flow meter that gives a relayed output on zero flow...... haven't worked out how yet. You can buy them for around £150 if you are stupidly rich

[futRtrubL]

I'm currently trying to think of a way of using a sealed motorless radial fan and magnets to create an induced signal in an external coil. Another is a resistance reed switch, water flow pushes a semi rigid wire away from a contact, when flow stops the read contacts the contact. Unfortunately this causes avoltage in the water and thus a (very) small current. Enough to get corotion and deposites.

Edward

[Turbokeu]

I bought this one: [url=http://www.swissflow.com/index(1).html [/URL]

This one seems OK too: http://www.gemssensors.com/homeflowsensors.html

Or go to http://www.mcmaster.com and look for flowindicators.
CD

[Turbokeu]

Oops, made a mistake in the first link...
I bought this one: http://www.swissflow.com

This one seems OK too: http://www.gemssensors.com/homeflowsensors.html

Or go to http://www.mcmaster.com and look for flowindicators.

[Joe]

I have 2 swissflow meters, and they are SLICK AS SHIT. you need to do some math to get the correct flow numbers ( as it registers at 16,000+ RPM on mbm ( so you divide it by 6000 to get Liters per min, multiply x2 to compensate for the /2 divider the header uses for all fans, and then you can convert to Gal, and x60 to get what the GPH is.)

they are small, leak proof, and Super easy to use.

[WaterPog]

So I have a couple of questions for you joe, how much does one of these meters cost, how much flow are you really seeing and from what pump? Will these things be touched on in the w/b roundup? could you swap in different pumps to see if the different blocks liked more or less flow?

just some thoughts rolling arround in my big empty head....thanks

[JimS]

For good quality, inexpensive flow meters, go here:
http://www.omega.com/toc_asp/subsect...B05&book=Green

[Joe]

Swiss Flow meters explained:

Price 100$ to get them in the US... Owch eh?

it gives you a reading of 6000 pulses per liter. which equates to 3000 pulses per liter in MBM due to the mobo probe. with that resolution of 3000/6000 pulses per liter you can get very accurate flow readings. I see differences in flows for any change in the cooling system.

BUT I would advise running a high quality high flow filter in the line.. cause fibers or hairs can wrap around the turbine and slow it down a bit.

yes its being used in the WB roundup.

[Darkhorse]

Racer,

I picked up the flow indicator from RS Componenets. My end goal is to fit some sort of IR transmitter/reciever to give a RPM indication and since the casing is transparent on both sides I should be able to do this without breaking any water tight seals.

[WaterPog]

Originally posted by Darkhorse:
Racer,

I picked up the flow indicator from RS Componenets. My end goal is to fit some sort of IR transmitter/reciever to give a RPM indication and since the casing is transparent on both sides I should be able to do this without breaking any water tight seals.

Ahhhh....Good call, if you could get a fast enough sensor it could count the vains on the indicator, which could then be fed into MBM....the only problem is that it would be tough to corelate to real-world flow (GPM/LPM), but would indicate rise or drop in flow very easily...

/me starts rummaging through spare parts cabinets at work....

[Darkhorse]

I wasn't looking to get any sort of real world measurement. I was looking to use it as a failsafe. Thought I would connect it to the fan header on the mobo to enable a hardware shutdown in case of pump failure or whatever.

[RACER]

Thanks Darkhorse: for the link I will check them out.