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H2 gas sensor project

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Discussion in 'Sensors and Actuators' started by rdevendrakumar1989, Aug 9, 2012.

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  1. Aug 9, 2012 #1
    rdevendrakumar1989

    rdevendrakumar1989

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    Aug 9, 2012
    Hai Friends,

    Am decided to develope H2 gas sensor. Give me an idea to develope the circuits.
     
  2. Aug 9, 2012 #2
    Harald Kapp

    Harald Kapp Moderator Moderator

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    Double post :(
     
  3. Aug 9, 2012 #3
    Harald Kapp

    Harald Kapp Moderator Moderator

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    Your post in the project log section should be removed.

    What type of H2 sensor are you going to use? Do you have a partucular component in mind? If so, look in the datasheet, normally you'll find application information there.
     
  4. Aug 9, 2012 #4
    rdevendrakumar1989

    rdevendrakumar1989

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    Aug 9, 2012
    Using Mosfet
     
  5. Aug 9, 2012 #5
    rdevendrakumar1989

    rdevendrakumar1989

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    Aug 9, 2012
    I found there are 2 detection methods are there.. 1. Calorimetric Detection - Gas concentration Vs. Temperatutre Rise
    2. Conductivity Detection - Gas concentration Vs. Electrical conductivity Change
     
  6. Aug 9, 2012 #6
    Harald Kapp

    Harald Kapp Moderator Moderator

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    A MOSFET is no H2 detector. Do you want to build the detector from scratch? Or are you going to use a commercial sensor with some hardware for signal conditioning?
     
  7. Aug 9, 2012 #7
    rdevendrakumar1989

    rdevendrakumar1989

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    ya i like to use commercial sensor... Am also decided to fabricate the sensor..
     
  8. Aug 9, 2012 #8
    (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    So are you wanting to build a circuit to use an already existing sensor, or do you want to build a sensor?
     
  9. Aug 9, 2012 #9
    rdevendrakumar1989

    rdevendrakumar1989

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    Using commercial h2 gas sensor how to develope circuit what are the things we need
     
  10. Aug 9, 2012 #10
    (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    At least triple posted actually. (I hate it when I answer a duplicated post only to find I have simple repeated someone else -- what a waste of time and effort. And then I have to clean up the mess as well.)
     
  11. Aug 9, 2012 #11
    rdevendrakumar1989

    rdevendrakumar1989

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    Aug 9, 2012
    Initially am decide to develope a circuit using an already existing Sensor.. After that to take a step to develope the sensor..
     
  12. Aug 9, 2012 #12
    (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Aaagh! quadruple!
     
  13. Aug 9, 2012 #13
    rdevendrakumar1989

    rdevendrakumar1989

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    Don't mistake me.. Am didn't knw about the various section.. am wrongly think need to post in all sections like circuit help, forum , etc.,, Hereafter am not continue this one.. sorry
     
  14. Aug 9, 2012 #14
    Harald Kapp

    Harald Kapp Moderator Moderator

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    Look in the datasheet of the existing sensor to find an application circuit.
    As to "how to build your own sensor" I'm at a loss.
     
  15. Aug 9, 2012 #15
    (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    This is the only one you've got now.

    edit: And now you're sending me private messages as well soliciting help. Are you trying to get banned?

    Anyone else been spammed by this character?
     
    Last edited: Aug 9, 2012
  16. Aug 9, 2012 #16
    rdevendrakumar1989

    rdevendrakumar1989

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    Aug 9, 2012
    Sorry..

    Reply me apologize me

    can u give me the attachment of various H2 sensor
     
    Last edited by a moderator: Aug 10, 2012
  17. Aug 9, 2012 #17
    Harald Kapp

    Harald Kapp Moderator Moderator

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    Google: hydrogen sensor
     
  18. Aug 10, 2012 #18
    rdevendrakumar1989

    rdevendrakumar1989

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    Aug 9, 2012
    Hai Friends,

    We can sense H2 gas by two methods...

    1. Calorimetric Detection - Gas concentration Vs. Temperature Rise ( Produced by the heat reaction on a catalytic)

    Note : Its should be independent of coverage area for better response

    2. Conductivity Detection - Gas concentration Vs. Change in electical conductivity ( Reaction of gas on the solid surface)

    LEL of H2 is 4% .. so we cutoff the system before its reach that limit.. so 0- 80% LEL enough for us..

    Step :

    First purchase H2 sensor and make circuit for our own..

    Help :

    What are the h2 gas sensor suit for our requirement?

    Give an idea to create circuit..

    Thank You
     
  19. Aug 10, 2012 #19
    davenn

    davenn Moderator

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    have you done as suggested and googled hydrogen sensor as yet ??

    Dave
     
  20. Aug 10, 2012 #20
    rdevendrakumar1989

    rdevendrakumar1989

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    Aug 9, 2012
    ya am googled and got more details... But till now there is no idea for circuit... If any one have sample circuit...
     
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