Circuit for Hall effect sensor

Discussion in 'General Electronics Chat' started by chudiandeyu, Oct 26, 2010.

  1. chudiandeyu

    chudiandeyu Thread Starter Member

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    Hello
    I recently bought a linear Hall effect sensor for measuring current, but I don't know how to make the circuit to measure the current, could anybody help me with this? Please tell me the circuit.
    Thank you very much!
     
    #1
  2. bertus

    bertus Administrator

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    #2
  3. chudiandeyu

    chudiandeyu Thread Starter Member

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    @bertus
    Thank you. And after I measured the output voltage of the hall effect sensor, how can I know the current in primary wire?
     
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  4. Kermit2

    Kermit2 A custom Title for me but not for thee

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    #4
  5. beenthere

    beenthere Retired Moderator

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    The device should have a data sheet that states the sensitivity of the sensor. Even so, you will probably need an ammeter to help calibrate the Hall effect sensor output.
     
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  6. mcgyvr

    mcgyvr Senior Member

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    You need to either use a micro to do the scaling or have some manual scaling factor (for example 10mV=1A)

    I've got a project that uses a hall sensor.. calibration is a pain. Mine measures up to 600 Amps DC. Sensor spaced approx. 3/16" off a copper bus bar.
     
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  7. chudiandeyu

    chudiandeyu Thread Starter Member

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    How can I know the scaling factor?
     
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  8. chudiandeyu

    chudiandeyu Thread Starter Member

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    Does anybody know the block diagram of Honeywell CSLA2EL Hall effect sensor ?
    And how to use this sensor to make a circuit for measuring current?
    And how can i know the relation between the output voltage and primary current?
    Thank you!
     
    #8
  9. hgmjr

    hgmjr Moderator

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    Greetings chudiandeyu,

    I have merged both of your posts since they appeared to be identical.

    hgmjr
     
    #9
  10. bertus

    bertus Administrator

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    Hello,

    All information on sensitivity and size are in the attached datasheet.

    Bertus
     
    #10
  11. chudiandeyu

    chudiandeyu Thread Starter Member

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    @bertus
    Thanks.
    I saw this datasheet, but it does not say what is the connection of primary current and secondary output voltage.
     
    #11
  12. bertus

    bertus Administrator

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    Hello,

    The datasheet tells you it uses the 99SS12 sensor.
    Here is tha datasheet of that sensor.

    Bertus
     
    #12
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