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  1. #1
    Join Date
    Mar 2017
    Location
    mainland uk
    Posts
    263

    Default Is this a multimeter?

    Bought for a few quid. Nice silicone test leads, corrosion needs cleaning up. But is it for DC or only AC. Label on back suggests DC ability. Front not so sure, except for "40kOhms/V=" on left of dial. 20190410_173545.jpg20190410_173541.jpg20190410_173527.jpg

  2. #2
    Join Date
    Apr 2011
    Location
    Me: Midlands, Boats: East Coast
    Posts
    345

    Default Re: Is this a multimeter?

    Yes it is. I've never seen "=" used in that manner before though.
    A quick search on the web might even find a manual
    De'il ding a divot auf yer wame wi a flaughter spade

  3. #3
    Join Date
    Oct 2005
    Location
    Durham, England
    Posts
    15,969

    Default Re: Is this a multimeter?

    Unless I'm missing something, it looks like DC only, though it does have a capacitance measurement. I suggest you Google for the manual. But the most important thing, ahead of owning a multimeter, is knowing how to use one. You can do untold damage to everything if you don't know how to use it. The most common and destructive mistake is trying to measure voltage on the Amps or Ohms ranges.

  4. #4
    Join Date
    Jul 2002
    Location
    Home: Kent. Boat: Chichester
    Posts
    43,060

    Default Re: Is this a multimeter?

    It is a multimeter

    the = symbol means DC, the ~ symbol means AC. (More usually the DC symbol has a dotted or broken lower line. The AC symbol sometimes has a dotted or broken lower line)

    There are separate scales for reading AC and DC

    You select AC, ~ , or DC, =, with the sliding switch. and then read the appropriate scale.
    A couple of the current ranges and a couple of the voltage ranges appear to be for DC only

    The DC setting is also for ohms. pF is for capacitance

    I dont know what U.S.I. means

    40Kohms/ volt is the impedance of the voltage ranges ... quite high meaning that the volts ranges will draw a relatively small current although much more than a digital meter
    Last edited by VicS; 11-04-19 at 21:35.

  5. #5
    Join Date
    Sep 2001
    Location
    Me - Zumerzet Boat - Wareham
    Posts
    11,865

    Default Re: Is this a multimeter?

    See http://www.pa4tim.nl/?p=5615

    It has a function that is a bit unusual for multimeters. The function is named U.S.I. It is made from two transistors and two transformers. It should generate a 20Vpp 500kHz signal that is modulated with 1kHz and so much harmonics that they can be detected upto 500 MHz. It draws 25mA
    MontyMariner.co.uk
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  6. #6
    Join Date
    Jul 2002
    Location
    Home: Kent. Boat: Chichester
    Posts
    43,060

    Default Re: Is this a multimeter?

    Quote Originally Posted by LadyInBed View Post
    See http://www.pa4tim.nl/?p=5615

    [/FONT][/COLOR]
    Brilliant bit of searching !

    I wonder if it is possible to get the 22.5 volt battery .

  7. #7
    Join Date
    Nov 2015
    Posts
    138

    Default Re: Is this a multimeter?


  8. #8
    Join Date
    Jul 2002
    Location
    Home: Kent. Boat: Chichester
    Posts
    43,060

    Default Re: Is this a multimeter?

    Quote Originally Posted by paulajayne View Post
    What about a source in the UK.

    The price of one would be better put towards a good digital meter (or several inexpensive ones for boat use)

  9. #9
    Join Date
    Mar 2017
    Location
    mainland uk
    Posts
    263

    Default Re: Is this a multimeter?

    Thanks everyone. Especially LadyInBed. I could only find pictures and foreign adverts on the net. It was worth the price just for the leads to use on my digital meter. Not sure what to do with this meter. Will clean up and see if it works perhaps.

  10. #10
    Join Date
    May 2003
    Location
    Fareham
    Posts
    551

    Default Re: Is this a multimeter?

    Quote Originally Posted by VicS View Post
    What about a source in the UK.

    The price of one would be better put towards a good digital meter (or several inexpensive ones for boat use)
    Probably OK as a toy. As Vic says you could get a couple of cheap ones for the battery price.
    https://www.ebay.co.uk/itm/22-5-V-BA...0AAOSwAKxWXhCF

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