Pressure Sensor?? PSI

krazyideas

Hello, I'm wondering about weather or not There is a sensor that I can connect to the basic stamp to sense air pressure inside of a tank?
I need it to be able to accuately mesure from 1/4 to 15 PSI in that range anyway
Does anyone know of what might work??

Thanks
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GICU812

A MAP sensor from a supercharged\turbocharged car would work.

They would measure from -1 bar to +1 bar, or about -14.6 PSI to 14.6 PSI, on a 5 volt refrence. .5 for -14, 4.5v for +14

00 Pontiac GrandPrix 3.8SC is a vehicle that uses GM's 2 bar MAP.

MSDTech

You might look at the Freescale Semiconductor MPXA6115A series of pressure transducers. You can have them either inside the tank or connected by tubing outside the tank. I am using one with an LTC1298 12-bit Analog-to-Digital Converter as a barometer. You can see the output at http://weather.msd.k12.mo.us
They may not handle the low pressure range, but are good from 2.2 to 16.7 psia.

Lab Rat

thats cool what is the refresh rate for the data transfer to the page

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Lab Rat

i wish i had a vex kit

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I`m not prejudice I hate everyone equally

MSDTech

The stamp is updating the Pink variables about 2x per second. I slowed it down to limit the amount of self heating on the SHT11 module.

smartkid

i am a mentor for a robotics team and we use an indrustal pressure transducer we got for another mentor it can sense from 0psi to about 128 psi were meeting tonight so i can get the part # tonight