Does anyone know Iron Vane?

Discussion in 'General Electronics Chat' started by chudiandeyu, Nov 5, 2010.

  1. chudiandeyu

    Thread Starter Member

    Oct 26, 2010
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    I saw Iron Vane is also a kind of current probe, but when I am using an iron vane do I have to open the circuit? Or it is just like current transformer could directly measure it?
    Thanks!
     
  2. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    From the wiki:


    here is the full page:
    http://en.wikipedia.org/wiki/Current_clamp

    Bertus
     
  3. chudiandeyu

    Thread Starter Member

    Oct 26, 2010
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    @bertus
    But in wiki it does not say how to use it...
     
  4. bertus

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  7. chudiandeyu

    Thread Starter Member

    Oct 26, 2010
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    @bertus
    Thank you
     
  8. marshallf3

    Well-Known Member

    Jul 26, 2010
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    I'm familiar with these, they were commonly used by auto mechanics as high current ammeters, matter of fact I have a set of them from Snap-On down in one of my tool boxes.

    On an active (closed) circuit you lay it against the current carrying conductor and the vane would move to indicate the amperage. One of mine is a low range (used to test charging current and alternator field winding draw) and the other is a high range used to test starter motor current.

    They didn't have to be clamped around the wire, just put on top of a short length that was flat.
    Very handy devices in their day, still handy even now.
     
  9. debe

    Well-Known Member

    Sep 21, 2010
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    The bottom Meter is what marshallf3 is refering to, Is used by placing on wire & reading current of Altenator or the higher scale for startermotors. The Volt meter is a moving vane in a coil & will measure AC or DC. Daryl
     
  10. marshallf3

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  11. chudiandeyu

    Thread Starter Member

    Oct 26, 2010
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    Hello marshallf3
    You mean just lay the Iron vane meter besides the current carrying conductor then it could indicate the current? without any connection?
    Thank you.
     
  12. debe

    Well-Known Member

    Sep 21, 2010
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    Hi chudiandeyu, Yes you just place the meter on the single wire you want to measure the current on, DC only. Daryl
     
  13. chudiandeyu

    Thread Starter Member

    Oct 26, 2010
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    Thank you Daryl
    So iron vane cannot measure AC current?
     
  14. debe

    Well-Known Member

    Sep 21, 2010
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    There are diferent types of iron vane meters, picture of an AC/DC moving iron Ampmeter showing a 240v electric jug hooked up to it. Daryl
     
    chudiandeyu likes this.
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