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Basic Wiring (Strain Gauge)

  1. Apr 1, 2015 #1
    Hello,
    I was wondering if anyone can help me out with this one. I am installing a 350 ohm strain gauge as shown in attached figure. I am expecting to see 350ohm value between terminal 1 and 2. I have checked the values for the following terminals.

    1) 5 & 6 = 350ohm (PASS)
    2) 3 & 4= 350ohm (PASS)
    3) 3 & 2= 350ohm (PASS)
    4) 4 & 1= 350ohm (PASS)
    5) 5 & 1= 0.03ohm (CLOSED LOOP) (PASS)
    6) 6 & 2=0.03ohm (CLOSED LOOP) (PASS)
    Any Point (1,2,3,4,5,6) and 7 (Various place on the test strip) = OPEN LOOP (PASS)
    1 & 2 = OPEN LOOP (FAIL!!!!!) NOT GETTING 350 Ohms

    This seems to be unusual problem to have. I have personally tripled checked it. I have asked my friends to check it. Does anyone have an idea what I am doing wrong here.


    Thanks

    upload_2015-4-1_16-34-5.png
     
  2. jcsd
  3. Apr 2, 2015 #2

    Stephen Tashi

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    I suggest you provide a link to the spec sheets for the device.
     
  4. Apr 2, 2015 #3
    I thought it was an April Fools joke as what he says should be impossible.
     
  5. Apr 2, 2015 #4
    I wish it was an April Fools joke. But seriously, I feel like I am defying physics here. The strain gauge I am using is CEA-13-125UN-350. I have attached the specs here. But, I am sure its nothing to do with the strain gauge itself. But, then again I feel there is absolutely nothing wrong with the setup.


    http://www.vishaypg.com/docs/11224/125un.pdf
     

    Attached Files:

  6. Apr 11, 2015 #5

    Stephen Tashi

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    Science Advisor

    Do you have the specs for the assembly shown in the photograph? The assembly in the photograph is more than "basic strain gauge".
     
  7. Apr 11, 2015 #6
    yes attached along with the previous post.
     
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