Fuel pressure sensor

[Chris Conlon]

At 02:33 PM 4/13/00 -0500, MysticZ wrote:

>> What kind of accuracy and cost are you looking for in a sensor? Do you need
>> current output, voltage output or what? Omega ( http://www.omega.com ) has
>
>I need 0-100 PSI, voltage output (pref 0-5 volts), accuracy isn't that
>important (1-2 PSI is probably overkill). Price is important. If the
>sensor is going to cost more than $40-$50 I'll skip it and do something
>else with this.

There are 2 units I have found.

First, I got an Intellitronix fuel pressure sender, from Summit. It
was ~$40, and looks like an enclosed diaphraghm, with a resistance
type sender. I don't imagine it's very fast or accurate.

Then I broke down and spent ~$100 on a "real" stainless steel
isolated pressure sensor from Measurement Specialties. They have
a range of pressures (0-100psi is on the low end of their stuff)
and a variety of output types (0-100mv unconditioned, ~5v
ratiometric to supply, ~5v regulated, 4-20ma current loop).
Digikey carries their stuff, website at http://www.measspec.com/
The cheapest are ~$60 for 1. The one I got is about what you said
you needed, 0.5-4.5v output range, 0-100psi.

I haven't used either one yet, but I think the 2nd one will give
the ~1ms response time and ~1-2% accuracy I'd like.

   Chris C.

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