Air sensors...

Archiver

Hello stampers,
Has any body done anything with air pressure sensors ? I wish to be able to check the air pressure in a cylinder with a stamp, either with an ADC or using the rctime method. However I would need good quality sensors as it is a bit of a safety issue.
Any sample code or sensor suppliers in Australia would be appreciated.

Also many thanks for the answers to my current sensing question.

Chris Anderson

Archiver

You may want to look at the PX240 series from www.omega.com. Prices
start at $149. You can pick from several different pressure ranges.
They have three wires: power, ground, and signal. Power can be from 8-16
vdc, regulated. The output signal is a dc value related to the pressure.
At 8 vdc supply, the output ranges from 1-6 vdc. Increasing the supply
voltage porportionally increases the output voltage, so depending on the
max ADC input voltage this output voltage may need to be scaled --
especailly if operating off a high supply voltage. The bad thing about
these sensors is that they have no zero or span adjustments.

BTW, request Omega's Reference Set -- 6 hardback volumes packed with cool
sensors, instrumentation, and technical info -- all for free. Phone is
800-222-2665.

On Thu, 8 Mar 2001 08:18:12 +0800 "Chris Anderson" <fes@g...>
writes:
> Hello stampers,
> Has any body done anything with air pressure sensors ? I wish to be
> able to check the air pressure in a cylinder with a stamp, either
> with an ADC or using the rctime method. However I would need good
> quality sensors as it is a bit of a safety issue.
> Any sample code or sensor suppliers in Australia would be
> appreciated.
>
> Also many thanks for the answers to my current sensing question.
>
> Chris Anderson
>