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Thread: Multimeter plugs

  1. #1
    Senior Member David8's Avatar
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    Multimeter plugs

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    I have a Jaycar multimeter with the stainless thermocouple from beanbay. In the photo below, the two plugs on the left are the stainless thermocouple, the plug on the right is the jaycar thermocouple that came with the multimeter. The stainless one is a little smaller and is a little loose in the multimeter. Its not a huge deal as it does work, I just have to be careful not to bump it. Does anyone if the two have names, and if there is an adaptor available?

    David


  2. #2
    Sleep is overrated Thundergod's Avatar
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    Re: Multimeter plugs

    I believe the ones on the left are called banana plugs.

  3. #3
    Senior Member David8's Avatar
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    Re: Multimeter plugs

    Quote Originally Posted by 1529342F252433262E25410 link=1339473084/1#1 date=1339474922
    I believe the ones on the left are called banana plugs.
    I think youre right. I just need an adaptor from banana to the ones on the right. Im not even sure if its possible. :-/

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    Re: Multimeter plugs

    Yes, i think youll find that they are just cheap banana plugs. You can either bend/flare the contacts so that they make better connection with the sockets on the multimeter, or simply replace them with better quality banana plugs.

    The adaptor on the right can be referred to as a thermocouple to banana plug adaptor.

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    Re: Multimeter plugs

    timmyb is right, theyre both banana plugs, just the ones on the adapter arent particularly high quality, Ive a probe type TC that came with the low quality banana plugs on it, I just used a fine flathead screwdriver to open them up a bit so theyd make good contact.

    If youre lucky the banana plugs will unscrew from the adapter (dont force them) and you can replace them with better ones (most single banana plugs are a screw fit into their housings).

    If you get really stuck and you know your way around a soldering iron you could just cut the banana plugs down and solder short wires with better banana plugs on them in place (sleeve the joint with heatshrink or similar)

  6. #6
    Senior Member David8's Avatar
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    Re: Multimeter plugs

    Quote Originally Posted by 4D4555425054534255270 link=1339473084/4#4 date=1339860028
    timmyb is right, theyre both banana plugs, just the ones on the adapter arent particularly high quality.
    Youre saying the ones on the right? The yellow adaptor? Theyre the ones that make the best contact. :/

  7. #7
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    Re: Multimeter plugs

    Isnt the white plug an adaptor for the DMM and the yellow plug for the Jaycar thermo ?
    Im guessing the Beanbay wont plug into the white adaptor.

    Both my DMM dont like anything but their original plugs. One is a cheapie for the garage the other is an aging Fluke. Your white plugs look a lot like theirs.

    Take everything with you to a bricks and mortar store. Online is too risky for ill-fitting plugs. If you cant get an adaptor then make one. Look at building a plug and socket box to sit between thermo and white adaptor. Or use alligator clip to banana clip lead. Or a piggy back plug. If you can browse the choices, you might find a plug and socket that has a good fit.

    I worked with medical and scientific gear for 20yrs before shifting to pure IT. They daisychained plugs and sockets that looked decidedly dodgy but with a good fit would work 100% of the time.

    I dont think it matter but Im pretty sure the term banana plug is used for any single-polarity plug (how it functions) rather than a particular design or shape.

  8. #8
    CoffeeSnobs Owner Andy's Avatar
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    Re: Multimeter plugs

    The plugs on the stainless thermocouple work fine in the datalogger that we sell. The problem you are having is that the Jaycar meter sockets have a different socket profile after you have used the ridgid adaptor. (it would have streched the top half of the socket)

    Quote Originally Posted by 363E2E392B2F28392E5C0 link=1339473084/4#4 date=1339860028
    I just used a fine flathead screwdriver to open them up a bit so theyd make good contact.
    Yep, thats exactly what you will need to do to make better contact on a different socket.

    1 minute fix.

  9. #9
    Senior Member David8's Avatar
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    Re: Multimeter plugs

    Alrighty everyone. Thanks for the comments. Job for the screwdriver it is!

    Quote Originally Posted by 767370707E7760120 link=1339473084/6#6 date=1339893537
    Isnt the white plug an adaptor for the DMM and the yellow plug for the Jaycar thermo ?
    Im guessing the Beanbay wont plug into the white adaptor.
    No. The white adaptor is a flat pin to banana plug adaptor. Such as this one - http://beanbay.coffeesnobs.com.au/ViewProduct.aspx/449-datalogger-multi-function-adaptor.



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