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Subject Topic: Digital panel meters? Post Reply Post New Topic
Personslowly_does_it
27/9/2011 at 9:38pm
 Location: Wetherby Yorks
 Outfit: ABI Award Northstar 1995 View slowly_does_it's Profile View Profile   Reply to slowly_does_it Reply   Quote slowly_does_it Quote  
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Can you recommend a digital voltmeter and a separate digital ampmeter? I'm looking for accurate, simple and fairly cheap ones.

There are some very expensive ones out there. But I bought a cheap one from ebay and its results vary against my multimeter.

Thanks


Personcolin51
27/9/2011 at 11:37pm
 Location: North West
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I bought one of these voltmeters very recently and have now fitted it to my caravan - looks great.
It arrived very quickly too.

http://www.ebay.co.uk/itm/260834495099?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

Colin

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First outing : 6 - 8th June 2011 - Rivington nr Bolton.
27/6/11 - 15/7/11: Cornwall.
2/9/11 - 5/9/11: Tarporley, Cheshire.
08/10/11 - 13/10/11: Naburn Lock nr York.
19/3/12 - 22/3/12: Southport


Personslowly_does_it
02/10/2011 at 11:55am
 Location: Wetherby Yorks
 Outfit: ABI Award Northstar 1995 View slowly_does_it's Profile View Profile   Reply to slowly_does_it Reply   Quote slowly_does_it Quote  
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Hi Colin

I bought a very similar one - its at http://www.ebay.co.uk/itm/Digital-Voltmeter-12V-D-C-Battery-Monitor-Panel-Meter-/160510337754?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item255f2962da.

But its readings varied against my multimeter, over time. There wasn't even the same difference between it and my multimeter, on every occasion, so I could do nothing with it.

Please let us know how accurate you find your meter is.

Thanks


Personcolin51
03/10/2011 at 12:28am
 Location: North West
 Outfit: Charisma 230 - Volvo V70 TDi Auto View colin51's Profile View Profile   Reply to colin51 Reply   Quote colin51 Quote  
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Quote: Originally posted by slowly_does_it on 02/10/2011
Hi Colin

I bought a very similar one - its at http://www.ebay.co.uk/itm/Digital-Voltmeter-12V-D-C-Battery-Monitor-Panel-Meter-/160510337754?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item255f2962da.

But its readings varied against my multimeter, over time. There wasn't even the same difference between it and my multimeter, on every occasion, so I could do nothing with it.

Please let us know how accurate you find your meter is.

Thanks


Hi Slowly,

Good point - I'll check it soon.
I have a good Fluke multimeter to compare against.
Will post results when I have them.

Colin


-------------
First outing : 6 - 8th June 2011 - Rivington nr Bolton.
27/6/11 - 15/7/11: Cornwall.
2/9/11 - 5/9/11: Tarporley, Cheshire.
08/10/11 - 13/10/11: Naburn Lock nr York.
19/3/12 - 22/3/12: Southport


Personcolin51
05/10/2011 at 11:46pm
 Location: North West
 Outfit: Charisma 230 - Volvo V70 TDi Auto View colin51's Profile View Profile   Reply to colin51 Reply   Quote colin51 Quote  
Joined: 24/4/2011

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Hi Slowly,
Checked the eBay meter against my Fluke multimeter today.

eBay meter read 14.25 v
Fluke multimeter read 14.23 v

I only checked at that voltage though.
May check over a range during use of the caravan when on site soon.

Colin

-------------
First outing : 6 - 8th June 2011 - Rivington nr Bolton.
27/6/11 - 15/7/11: Cornwall.
2/9/11 - 5/9/11: Tarporley, Cheshire.
08/10/11 - 13/10/11: Naburn Lock nr York.
19/3/12 - 22/3/12: Southport


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Personslowly_does_it
08/10/2011 at 11:31am
 Location: Wetherby Yorks
 Outfit: ABI Award Northstar 1995 View slowly_does_it's Profile View Profile   Reply to slowly_does_it Reply   Quote slowly_does_it Quote  
Joined: 28/4/2010

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Hi Colin

Thanks for letting us know. Your initial result is not bad. What did my head in, over time, was that my eBay meter and my reference meter disagreed with each other by a variable amount. It took quite a while to work this out - what a lot of effort to find out it can't be trusted!

Your post has made me think that the disagreement may be voltage dependent. ie, if I factored in the variation in voltage, the disagreement may be following predictable laws. However, though I can just about handle this concept, there is no way I could, in practice, handle the maths!

Good luck with it and do let us know.

Very slowly does it.



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