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Thang Nguyen

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Posts posted by Thang Nguyen

  1. Hi,

    I would like to ask if any have experiment with Omega load cell LCMFL series? By some reasons, I cannot get any response from the load cell. So I need help.

    In my project I have a load cell LCMFL 20N connect with NI 9237 card. I set it up with full bridge (verify with customer service), internal, 5 V excitation. The scale is 10N 1mV/V. I cannot get any response from it.

    Then I tried to connect it with a 5VDC power supply and use multimeter to measure but the response signal is not changed either. So I wonder if I do anything wrong with the wiring or not.

     

    Regards,

    Thang Nguyen

  2. Max,

    I tried with RSE but it didn't work.

     

     

    Great :thumbup1: ! one of the problem is solved...

     

    for the Fluke I don't think that the output is in AC... I suppose that is in DC and with the data you wrote 0,4V for each Ampere of measurement (e.g. if the reading is 2A the output should be 0.8V) so I think that the same connection of the transducer with a fullscale limited at 2V will be sufficient...

     

    let me know

     

    Max

     

    post-7703-0-07779300-1380130504_thumb.pn

  3. Max,

    Yes, it's a differential input.

    Since I have just accessed to a scope, and I tested with my current lamp + an industry fan, I got a really good DC signal from transducer. But from Max, I got the same level of peak but the signal still goes to zero as in my first picture. Somehow I get a noise from my card.

     

    Regards,
    Thang Nguyen

  4. I am working on a project with requirement of measuring current. The system includes both the AC current transducer CR4211-15 (Input 0/15AAC, Output 0/10VDC) and a Fluke i5S (Input 0.01/5AAC, Output 400mV/A).

     

    I use cDAQ9184 with NI-9205. I tested with a light and using MAX to monitor the signal but the signal really noise from the AC transducer and clamp. 

    Please take a look at the pics I attached which is the screenshot from MAX.

     

    I hope anyone with exp can give me a help.

     

    Thank you!

    Thang Nguyen

    post-7703-0-51394700-1380053135_thumb.pn

    post-7703-0-13505500-1380053137_thumb.pn

  5. Hi,

    I am quite new with TestStand. I know how to develop a test sequence already. Now my project becomes more complicated with checking if it is the first test sequence to implement some extra task such as scan bar code for a set of test sample. What should I do to make this happen?

    Thank you for your time!


    Thang Nguyen

  6. Hi,

    I have started worked on a new project which require using Keyence Laser Marker MD-F3000 series to  mark serial number. I cannot find any documents about control this device programmatically such as input a certain string with different parameters and tell the controller mark it.

    If anyone has experience with this device please give me advice how this one work or where I can find document about it.

     

    Thank you so much!

  7. anh Minh,

    I have a problem with the white area on the top right of the character which make the algorithm cannot work correctly. That is created with the pump up of the surface of the device. It will go away if I scan along the length of the text but requirement is I have to be able to scan both ways, along the height of the text and along the length of the text. Do you have any experience with this?

  8. Hi,

    I am working on a project which using scanControl to scan the  D surface of products to detect engraved serial number by laser. I have never used this laser sensor before. I have not had much successful to read back an image with clear. The result I got is hard to process. I think maybe I did not get the correct data I want. I wonder if there is someone familiar with communication interface with this device can share me the sequence of functions using to get an intensity image of 3D surface.

     

    Thank you!

    Thang Nguyen

  9. I did recompile and the error is still there. I tried to copy that while loop into a blank VI, ran, and confirmed it work. Then I delete the case in my main VI, and build the case. Copy back the while loop, and error still happens.

    I have just tried to remove the -1 block from inside the while loop to outside the while loop and it works now. I am lucky that I don't have to rebuild the whole VI.

    I sent the VI to NI already.

    Best regards,

    Thang Nguyen

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