[Stoves] FLOWMETER

[AJH]

On Tue, 12 Jun 2007 23:05:30 -0400, David G. LeVine wrote:

>There is a good electronic flow meter which is available worldwide at 
>moderate cost.  The one I have will measure in excess of 12,000 LPM 
>and is sensitive enough to measure a few LPM, holds calibration and 
>can be used in less than benign environments.  The sensor is 
>available from 
>http://www.partsamerica.com/ProductDetail.aspx?MfrCode=A1C&MfrPartNumber=749549&PartType=473&PTSet=A 
>for under $100 (US).  They are available from scrap yards for much 
>less, I would assume.
>
>What is it?  It is a Ford "mass flow sensor" used in most later model 
>Ford engines, GM probably uses a similar one.

I've only swapped these around in cars, is the output linear? Do you
just connect a 12V supply to the wire and then read the resistance? Is
the second wire a reference for temperature?

I'm told you can make something much cheaper by using an ordinary bulb
with the glass gently broken off but the electronics defeat me.

AJH