You may want to take a look at Sensor Technics (or SenSym) (sorry I don't
have a URL). They have a wide range of products (both absolute, differential
and gauge raw and compensated). I've used one of the SenSym sensors to in a
model sub for some time to provide accurate automatic depth control.

Andy



>>I am looking for an air pressure sensor.  I am less interested in
>>absolute air pressure than in changes in air pressure.  The sensor must
>>operation at standard air pressure and detect very brief (<10ms) changes
>>of up to 10%.
>>
>>Any suggestions on where to look?