Re: [MBZ] Meter on Amazon ? Good value?

[Jim Cathey via Mercedes]

>
> What do you think it means ... 60A/600A ±(3% +6) ". What is the +6???


Standard rating type for digital systems.  It's telling you that the
accuracy is a percentage of the range the meter is set to, PLUS some fixed
number of LSD counts it may be off by.  +/- 3%, AND +/- 6 counts in the LSD
regardless of whatever
percentage that might represent.

what does the "4000 count" refer to
>

Also classic.  In the early years, NIX-II (nixie) tube days, the carry bit
out of the last column of the logic
was interpreted as a "1".  (Special [cheaper] display element, separate
lamp, etc.)  This became the
1/2 digit in a precision spec., and was the norm for years.  Later, Fluke
(others?) widened the MSD's
range from 0-1 to 0-3, resulting in a max count of 3999 (4000 discrete
values from the counter chain).
I think they call that a 3/4 digit or something like that.

It's just another way to tell you the breadth of a range.

I just tested out my Fluke 83, and its top count is not 3999, it's 4095.
Not very much different, but telling.
Clearly it's now binary inside and not BCD, unlike early digital meters.
It's possible that the "4000 count"
label has always meant this, I don't have any middle-aged digital meters.

-- Jim
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Re: [MBZ] Meter on Amazon ? Good value?

[Rick Knoble via Mercedes]

Mitch asks:

>‎Measured inductively?
>And it measures the same if you unhook >the battery and measure it in series?
>Because that would be awesome for $40.

Yep. I picked it up for under forty. I checked inline with a Fluke and they 
were pretty close.

Rick
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Re: [MBZ] Meter on Amazon ? Good value?

[Mitch Haley via Mercedes]

> On September 16, 2017 at 1:50 AM Rick Knoble via Mercedes 
>  wrote:
> 
> 
> I bought this one. It works surprisingly well. 
> 
> https://www.amazon.com/gp/product/B00O1Q2HOQ/ref=oh_aui_search_detailpage?ie=UTF8=1
> 
> The kids '85 300d has a 25-33 ma draw while sitting‎. 

Measured inductively?
And it measures the same if you unhook the battery and measure it in series?
Because that would be awesome for $40.

Mitch.

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Re: [MBZ] Meter on Amazon ? Good value?

[Rick Knoble via Mercedes]

I bought this one. It works surprisingly well. 

https://www.amazon.com/gp/product/B00O1Q2HOQ/ref=oh_aui_search_detailpage?ie=UTF8=1

The kids '85 300d has a 25-33 ma draw while sitting‎. 

Rick
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Re: [MBZ] Meter on Amazon ? Good value?

[OK Don via Mercedes]

What do you think it means when the spec says "DC/AC Current: 60A/600A ±(3%
+6) ". What is the +6???
https://www.amazon.com/gp/product/B00KETEBJI/ref=ox_sc_sfl_title_1?ie=UTF8=1=A867P1BBKCZM8

For that matter, what does the "4000 count" refer to (on the meter Peter
referred to)?

On Fri, Sep 15, 2017 at 11:42 PM, fmiser via Mercedes  wrote:

> > Larry wrote:
>
> > Came across this on Amazon today :
> > Etekcity MSR-C600 Digital Clamp Meter Multimeters , Auto-Ranging
> > Multimeter AC/DC voltmeter with Voltage, AC Current,
>
> DC current clamp meter is oh-so-very handy for automotive work.
> Not as easy to build as AC clamp, so usually costs more.
>
> Something like this one
> https://www.amazon.com/MS2108A-Range-Digital-Current-Tester/dp/B00SQ4UETO/
>
> It is not as accurate or trustworthy as a Fluke, but if you are
> just after a general purpose meter and you will be using it on the
> car, this could be the one to get.  The DC current will work for
> things like testing glow plugs, alternator charging, starting
> current (it is only rated to read 400 A, which isn't really enough
> for an OM616 or OM617 but it might work for other cars), etc.
>
> > Amp, Volt, Ohm, Diode and Resistance Test Tester.
>
> Those are the functions expected from a multi-meter.  The clamp AC
> or DC current is a (handy) extra feature
>
> > I bought a MM from Radio Shack when they were closing lots of
> > stores and while not bad, it's not high end.  Course it was only
> > around $25. Any ideas?
>
> Neither the one you found, or the one I linked, is necessarily any
> better than the RadioShack.  But if the RadioShack meter doesn't
> have clamp current measurement then either will add a bit more
> capability.
>
> Since I can't see those electrons moving around, I depend on tools
> like these meters to "see" what's happening.  Good meters are,
> well good.  But even a cheapie like either of these is a lot
> better than no meter for most work!!
>
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>
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>
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>
>


-- 
OK Don

*“Travel is fatal to prejudice, bigotry and narrow-mindedness, and many of
our people need it sorely on these accounts.”* – Mark Twain

"There are three kinds of men: The ones that learns by reading. The few who
learn by observation. The rest of them have to pee on the electric fence
for themselves."

WILL ROGERS, *The Manly Wisdom of Will Rogers*
2013 F150, 18 mpg
2017 Subaru Legacy, 30 mpg
1957 C182A, 12 mpg - but at 150 mph!
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Re: [MBZ] Meter on Amazon ? Good value?

[fmiser via Mercedes]

> Larry wrote:

> Came across this on Amazon today :
> Etekcity MSR-C600 Digital Clamp Meter Multimeters , Auto-Ranging 
> Multimeter AC/DC voltmeter with Voltage, AC Current,

DC current clamp meter is oh-so-very handy for automotive work.
Not as easy to build as AC clamp, so usually costs more.

Something like this one
https://www.amazon.com/MS2108A-Range-Digital-Current-Tester/dp/B00SQ4UETO/

It is not as accurate or trustworthy as a Fluke, but if you are
just after a general purpose meter and you will be using it on the
car, this could be the one to get.  The DC current will work for
things like testing glow plugs, alternator charging, starting
current (it is only rated to read 400 A, which isn't really enough
for an OM616 or OM617 but it might work for other cars), etc.

> Amp, Volt, Ohm, Diode and Resistance Test Tester.

Those are the functions expected from a multi-meter.  The clamp AC
or DC current is a (handy) extra feature

> I bought a MM from Radio Shack when they were closing lots of
> stores and while not bad, it's not high end.  Course it was only
> around $25. Any ideas?

Neither the one you found, or the one I linked, is necessarily any
better than the RadioShack.  But if the RadioShack meter doesn't
have clamp current measurement then either will add a bit more
capability.

Since I can't see those electrons moving around, I depend on tools
like these meters to "see" what's happening.  Good meters are,
well good.  But even a cheapie like either of these is a lot
better than no meter for most work!!

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Re: [MBZ] Meter on Amazon ? Good value?

[Craig via Mercedes]

On Fri, 15 Sep 2017 17:16:21 -0700 Jim Cathey via Mercedes
 wrote:

> There are a lot of automotive uses for a DC clamp-on ammeter.  Those,
> though, are not usually so cheap.  I use a Fluke, I think meter and
> clamp, used, were in the $200-300 territory.

And the one Larry posted only does AC ...


Craig

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Re: [MBZ] Meter on Amazon ? Good value?

[Jim Cathey via Mercedes]

There are a lot of automotive uses for a DC clamp-on ammeter.  Those,
though, are not usually so cheap.  I use a Fluke, I think meter and clamp,
used, were in the $200-300 territory.

-- Jim
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Re: [MBZ] Meter on Amazon ? Good value?

[Craig via Mercedes]

On Fri, 15 Sep 2017 18:32:02 -0400 Larry Turner via Mercedes
 wrote:

> Came across this on Amazon today :
> Etekcity MSR-C600 Digital Clamp Meter Multimeters , Auto-Ranging 
> Multimeter AC/DC voltmeter with Voltage, AC Current, Amp, Volt, Ohm, 
> Diode and Resistance Test Tester.

I am unfamiliar with that brand. Do you really need to measure up to
400 Amperes AC?

Back in the '80s I bought a cheap DMM. One time I forgot I had it set on
the 10 A DC range and went to measure the voltage of a 12 V car battery.
The meter was destroyed.

I bit the bullet and purchased a Fluke 77 DMM. After using it for awhile,
I made the same mistake with it, but on a friend's 24 V tractor battery
bank. The meter survived. I still have it and am still using it.

The latest version, the 77 IV, is pricey (like $320), but you can get an
original version cheaper on eBay:

http://www.ebay.com/itm/Fluke-77-Multimeter-Leads-Manual-Case-Works-/112559210394#viTabs_0

Currently $27.00.


Craig

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[MBZ] Meter on Amazon ? Good value?

[Larry Turner via Mercedes]

Came across this on Amazon today :
Etekcity MSR-C600 Digital Clamp Meter Multimeters , Auto-Ranging 
Multimeter AC/DC voltmeter with Voltage, AC Current, Amp, Volt, Ohm, 
Diode and Resistance Test Tester.
It seems like it will do a lot for the occasional user like myself.  But 
I know there are more knowledgeable people out there than me, cause I 
have almost Zero knowledge.  ;-)
It's $22.99.  I'm a Prime member but I don't know if that affects the 
price or not.     I bought a MM from Radio Shack when they were closing 
lots of stores and while not bad, it's not high end.  Course it was only 
around $25.

Any ideas?
LarryT
91 300D
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