On Tue, 4 Jun 2002, A.J. Tufgar wrote:

>I had a tough time actually getting this information out of the company
>I'm dealing with.  I believe the voltage actually does swing negative and
>positive in relation to the pressure placed on it.  The engineer I taked
>to said it worked both ways so I'll take his word on it.

The voltage on all bridge pressure sensors changes sign when they are
driven with 'opposite' pressure. Usually there is a limit on the reverse
pressure (it is lower than the forward pressure). Yuo need to account for
the offset of the bridge to determine zero. The offset will change with
the bias voltage.

Peter

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