Digital pressure sensor

Discussion in 'Embedded Systems and Microcontrollers' started by planteg, Apr 12, 2010.

  1. planteg

    Thread Starter New Member

    Apr 12, 2010
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    Hi everyone,

    I am looking for a digital absolute pressure senso. I have found out those of Measurement Specialties, like the MS5540C. But I am wondering if someone can poit me out to other sensors of the same kind.

    Thanks a lot

    Gilles Plante
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    Hey.. welcome to AAC.
    Did you try googling, find some and post it here so we can discuss, and find what is best for ur needs.
     
  3. planteg

    Thread Starter New Member

    Apr 12, 2010
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    Yes,

    I googled a lot, quite a lot :). The one from Measurement Specialties are very interesting: SPI interface, individually calibrated. See http://www.intersema.ch/products/guide/calibrated/ms5540c/ for one of the sensors. There was one from VTI technologies, see http://www.vti.fi/en/support/obsolete_products/pressure_sensors/. This one was even better, because you don't have to compute compensated pressure and provide a clock. Unfortunately, it is discontinued. I also found this http://www.hoperf.com/sensor/hp03m.htm from Hoperf. But they state it should not be used for certain needs. So there is only one provider found.

    I would like to know if I miss some others. Sometime you don't always find on Internet.

    Thanks
     
  4. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    Hmmm tht will do,
    Post ur application. then we can find what is most suitable for you
     
  5. planteg

    Thread Starter New Member

    Apr 12, 2010
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    I can't tell much because of an NDA. I need to know at which the depth an equipment will be. Diving computers use a pressure sensor and then compute the depth. I prefer to have a sensor that provide digital output. Since the quipment will be small, the sensor has to be.
     
  6. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    We will need info to help. Sorry
     
  7. planteg

    Thread Starter New Member

    Apr 12, 2010
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    What kind of information would you like me to provide then ?
     
  8. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    show us ur application
    tell us what you want to do.
    If you have a prototype then show it.
    We are not going to steal ur method or what ever it is. for our benefit.
    This forum shares knowledge that's all
     
  9. atferrari

    AAC Fanatic!

    Jan 6, 2004
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    Didn't check anything lately but google for Sensym. They had incredible good application notes. Learnt a lot from them.
     
  10. kingdano

    Member

    Apr 14, 2010
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    if you are still doing this i can get some information from some really good ME's at work tomorrow.
     
  11. planteg

    Thread Starter New Member

    Apr 12, 2010
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    kingdano,

    yes I am still looking for pressure sensors. I would be pleased if you can provide some information.

    Thanks
     
  12. retched

    AAC Fanatic!

    Dec 5, 2009
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    Are you looking for something that is checking the pressure in a down-hole environment? Or is it basically for depth?
     
  13. planteg

    Thread Starter New Member

    Apr 12, 2010
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    retched,

    It is to get depth. I am looking for the kind of sensors used in diving computers.
     
  14. retched

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    Dec 5, 2009
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  15. kender

    Senior Member

    Jan 17, 2007
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    Yes, that's unfortunate. But Sparkfun has large quantity of these sensors in stock.
     
  16. retched

    AAC Fanatic!

    Dec 5, 2009
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    You would have to be sure to buy them out if you plan on making this a production model. BUT, good design calls for you to use a component that will be available in the future, or has a pin for pin and spec equivalent.

    If you only want to make 5, buy 25 of the sensors and you should be good for a little while. But from what Im gathering from this thread and the NDA, Im guessing you want this a little more rounded.
     
    kingdano likes this.
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