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Thread: Tb 302 rpm

  1. #1
    Join Date
    Jan 2007
    Location
    S.W. Missouri
    Posts
    154

    Default Tb 302 rpm

    I have had my TB302 for several years and it runs and welds great but after reading several post on here I bought a multimeter with a Hz. scale on it and thought I would check the RPM by the Hz as recommended on here.

    When I plug it in to the outlets on the welder it jumps around so much you can't tell what it's reading. When I plug it into an outlet in the shop it shows a steady 59.9.

    What am I doing wrong?

    Guess I wont worry to much about as it runs and welds great as is, but just curious.
    Trailblazer 302
    Lincoln SP-135-T
    Hobart Stickmate AC/DC
    Smith torch
    Spoolmatic 30A

  2. #2
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,608

    Default

    your doing it correct, whats happening is that you have no smoothing function on your meter,

  3. #3
    Join Date
    Jan 2012
    Location
    Metro Detroit, MI
    Posts
    182

    Default Tb 302 rpm

    To get a good Hz reading you need a decent multimeter. Cruzier stated you need a smoothing feature or graphing function.
    Never Satisfied

    Millermatic 211
    Maxstar 150STL
    Metabos
    Kennedy Maintenance Pro Full
    Makita Cordless 18v Li-Ion
    Stihl TS 420

    Timfrank88@live.com

  4. #4
    Join Date
    Jan 2007
    Location
    S.W. Missouri
    Posts
    154

    Default

    Ok guys any recommendations on brand or dealer to locate the meter that has the "smoothing" feature? I've spent a couple of hours on the web looking at meters and none of them have that feature described in the specifications?

    That is if I can return this one and get my money back.
    Trailblazer 302
    Lincoln SP-135-T
    Hobart Stickmate AC/DC
    Smith torch
    Spoolmatic 30A

  5. #5
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,608

    Default

    All flukes do. all the same though, why not just meter in your machine as close as you can get it.

  6. #6
    Join Date
    Jan 2007
    Location
    S.W. Missouri
    Posts
    154

    Default

    That's what I've done in the past and I guess continue to do, set it by display to 3.750 RPM.
    Trailblazer 302
    Lincoln SP-135-T
    Hobart Stickmate AC/DC
    Smith torch
    Spoolmatic 30A

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