MPX2200

[Angus Mackinnon]

> 
[snip]
dn wrote:
> -$30 range.  You can call the Motorola Literature Distribution Center,
> PO Box 20912, Pheonix, Arizona 85036 and request a Pressure Sensor Databook 
> (free).  While you're at it, get a copy of their application note list,
 The pressure sensor databook has application notes for the sensors. 


> Looking through their catalog, I noticed that the MPX2200 is not available
> in a differential configuration, and it is a 0-30PSI absolute sensor,
> which would probably be used in a turbo application... The MPX2100A is

I have used the MPX2200 in a data logger for a turbo engine. I used the
simplest instrument amplifier circuit from the application notes, uses a
LM 358N dual op amp and a few other discrete components. The circuit
gives a reasonable voltage gain and swing and hooks up to an A/D
converter. The results I got seemed to be ok. I used oversampling and a
moving average filter for each data point.

In regard to the issue of dampening vacuum fluctuations in the inlet
manifold, I read that some of the smaller Japanese (Daihatsu) turbo cars
use in-line dampeners to smooth out fluctuations in the factory boost
guages. Maybe one of these could be used in the B&S lawnmower system? 

Angus.

--- 
Angus Mackinnon
Dept of Digital Systems                  angus at rdt.monash.edu.au
Monash University, Clayton               phone: +61 3 9905 3403
Victoria, AUSTRALIA