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dissolved oxygen sensor

Discussion in 'Electronic Projects Design/Ideas/Reviews' started by shreyas_patel21, Dec 30, 2010.

  1. shreyas_patel21

    shreyas_patel21 New Member

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    i am working on dissolved oxygen(d.o) sensor

    i have one d.o. probe for that find attachment for info regarding to d.o. electrode.

    when we give supply to anode the cathode gives output according to dissolved oxygen in water.

    can anyone help me to make circuit diagram for it.

    thank you,
    shreyas.
  2. Binu

    Binu Administrator

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    Use a Analog to digital converter to get the digital value and use a microcontroller to display it over some led or lcd display.
  3. shreyas_patel21

    shreyas_patel21 New Member

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    thank you sir,

    i have made the circuit for do electrode i have attached the 2 terminals anode and cathode.
    there are two more terminals for thermister, i think they might be for temperature compensation.
    but i dont know how to use them in my circuit.

    i am attaching the circuit i made

    i am planning to use microcontroller with ADC like pic microcontroller.

    Attached Files:

  4. nothinrandom

    nothinrandom New Member

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    shreyas_patel21,

    I think you have read the specs wrong. I'm building the same sensor board, and you're supposed to apply anywhere from -0.6V to -0.8V to the cathode side. Then the anode side will output anywhere from 0.65nA to 295nA. I'm using the COS41-2F from Endress and Hauser.
  5. shreyas_patel21

    shreyas_patel21 New Member

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    I am using ASYL3801 from Nengshi electrode
    here is the sheet i have attached.

    Attached Files:

  6. nothinrandom

    nothinrandom New Member

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    Why is there no common/ground point?
  7. shreyas_patel21

    shreyas_patel21 New Member

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    sorry who told you that there is no ground?

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