Re: mass liquid flow meter?

On Mon, 17 Sep 2007 19:29:43 -0700, "acannell@xxxxxxx"
<acannell@xxxxxxx> wrote:

Anyone know of a circuit to measure flow using two thermistors? I.e.
it determines how much flow there is by measuring how much power it
takes to maintain one of the thermistors at a certain temperature?

Why do you need two thermistors anyway? Cant you just figure out how
much power it takes to keep one thermistor at a certain temperature?

Sure. Check out by BSEE Thesis, "Blood Flow Rate Using Thermistors",
James E. Thompson, MIT, June 1962.

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

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