Pressure Sensors

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mtlost
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Posted by mtlost: Fri. Oct 24, 2008 - 03:53 PM
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Hey all the freaks. Its been a while. How are everyone doing?

I've been busy, very busy. I have a quick question. What type of pressure sensors do you get and what will be the cheapest and easiest to use?

O, I forgot, I want to meassure air pressure, constant/varing slowly. I want to select a pressure then I want to keep the pressure constant (within 5%) of the selected pressure. So it will vary slowly.

I have no idea what to look for as this is the first time I will use a pressure sensor. Any direction/help will be appreciated.

Thank you freaks.

Tags:

Learning and Information, General Electronics
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leon_heller
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Posted by leon_heller: Fri. Oct 24, 2008 - 04:23 PM
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Freescale makes them.

Leon

Leon Heller G1HSM

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mtlost
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Posted by mtlost: Fri. Oct 24, 2008 - 05:22 PM
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Thanx Leon, mmmm, you don't maybe know who the distributer is in South Africa?

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leon_heller
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Posted by leon_heller: Fri. Oct 24, 2008 - 05:30 PM
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Farnell stocks some of them, I think. Or, you can find a distributor on the Freescale web site.

Leon

Leon Heller G1HSM

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mtlost
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Posted by mtlost: Fri. Oct 24, 2008 - 05:38 PM
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thank you

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barnacle
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Posted by barnacle: Fri. Oct 24, 2008 - 06:08 PM
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If you want better resolution than Freescale, e.g. weather forecasting or altimeter, consider Sema.

Neil Barnes
www.nailed-barnacle.co.uk

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mtlost
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Posted by mtlost: Fri. Oct 24, 2008 - 06:22 PM
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I just want to controll the pressure in a bag, set it to a pressure and then measure it and switch on a pump to regulate the pressure.

No serious very accurate stuff. As cheap as possible.

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ka7ehk
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Posted by ka7ehk: Fri. Oct 24, 2008 - 07:14 PM
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So you will probably want a differential sensor with one side open to atmosphere or a gauge sensor.

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

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gskinner
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Posted by gskinner: Fri. Oct 24, 2008 - 11:27 PM
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lots of info here:
www.kele.com
Bartlett, TN 38133
USA: 888-397-5353

AMP makes 4 differential pressure sensors - m30 m40 t30 and t40
m30 & t30 uses 11-32 VDC power, m40 t40 use ac power

mouser and digikey have several to choose from

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