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Inductive Volt Meter?????????????

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  • Inductive Volt Meter?????????????

    My total knowledge of electrical issues will fit nicely under your fingernail. I have some wire locations that are impossible to get a standard lead to the connection to test for voltage. I know there are inductive timing lights. Is there such thing as an inductive meter
    2007 Mariah DX212 w/ 2007 Merc 150 Saltwater

    [ATTACH=CONFIG]temp_129201_1408990994699_719[/ATTACH]
    "Knot A Lot"

    Finally...my boat is not the oldest vehicle in my yard!
    ...and there's a prayer in every post for my friend, Sasto...


  • #2
    Re: Inductive Volt Meter?????????????

    Originally posted by coastalrichard View Post
    My total knowledge of electrical issues will fit nicely under your fingernail. I have some wire locations that are impossible to get a standard lead to the connection to test for voltage. I know there are inductive timing lights. Is there such thing as an inductive meter
    For measuring amperage draw, yes. Voltage, not so much. Where are your wires? Got any pic's? Myself or others may be able to give you pointers on creative ways to check what you need to if we can see what your working on.
    1976 Rogers Custom Boats 18' "Bonneville" W/ Chevy 454/ Berkeley 12JC

    Care Taker of 1976 Glastron V-184 Crestflight W/ Volvo 170B/280 I.O.
    & 1969 Starcraft W/ 1956 Evinrude 7.5hp Fleetwin.

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    • #3
      Re: Inductive Volt Meter?????????????

      Well, the problem is that my fuel gauge has stopped working. Prior to removing the sender (it's gonna be a bear) I want to prove that it is not electrical in nature, so I started testing the circuits. I have proven good connections on the negative side at both the helm and the sender. I have proven the positive circuit at the helm but cannot prove the circuit at the sender due to the fact that I can't get a lead on the wire at the sender (it's got a thick insulation shield and, being under the sole, I don't want to remove insulation to test). Hence, I want to know if there is current in the positive wire from the sender. I feel like once I have ruled out power then I have to conclude that the sender is not working. Am I making sense?
      2007 Mariah DX212 w/ 2007 Merc 150 Saltwater

      [ATTACH=CONFIG]temp_129201_1408990994699_719[/ATTACH]
      "Knot A Lot"

      Finally...my boat is not the oldest vehicle in my yard!
      ...and there's a prayer in every post for my friend, Sasto...

      Comment



      • #4
        Re: Inductive Volt Meter?????????????

        Originally posted by coastalrichard View Post
        Hence, I want to know if there is current in the positive wire from the sender.
        No way you are going to be able to measure that.

        Take the 2 wires off the gauge that go to the sender and measure the resistance. Depending on the level of your tank, is probably going to measure anywhere from 20 to 300 ohms or so.

        You can also test your gauge by putting a potentiometer across the gauge(after removing those same wires) and vary it between those same numbers to see how it works.
        1998 Wellcraft Eclipse 24 Cuddy
        Volvo Penta Duo-Prop 7.4L "LK"

        2006 Sun Tracker Party Barge 21
        Mercury 90 4-Stroke FI
        "Common sense is not very common"
        "Failing to prepare is preparing to fail." -- John Wooden

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        • #5
          Re: Inductive Volt Meter?????????????

          The sender is very likely grounded back at the stern so all you need to do is disconnect the pink wire at the gauge (the one on the "S" terminal). You then measure resistance between the pink wire and ground. 240 ohms with an empty tank, 109 ohms at 1/2 tank and 33 ohms full tank. If the reading is within reasonable range of these values then the sender is good. If it measures open circuit or something very different than above, the wire is bad or the sender is bad.

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          • #6
            Re: Inductive Volt Meter?????????????

            Yep, Silvertip is correct, only one wire going back there from the gauge.
            1998 Wellcraft Eclipse 24 Cuddy
            Volvo Penta Duo-Prop 7.4L "LK"

            2006 Sun Tracker Party Barge 21
            Mercury 90 4-Stroke FI
            "Common sense is not very common"
            "Failing to prepare is preparing to fail." -- John Wooden

            Comment



            • #7
              Re: Inductive Volt Meter?????????????

              Thanks folks...with clear, concise instructions like that...I think even I can do this
              2007 Mariah DX212 w/ 2007 Merc 150 Saltwater

              [ATTACH=CONFIG]temp_129201_1408990994699_719[/ATTACH]
              "Knot A Lot"

              Finally...my boat is not the oldest vehicle in my yard!
              ...and there's a prayer in every post for my friend, Sasto...

              Comment

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