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From: Dave Plowman (News) on 2 Mar 2010 05:07
For a bench unit I far prefer a LED or plasma display. LCD is too
directional. And of course one which is mains powered, at least as an
option.

--
*Taxation WITH representation ain't much fun, either.

Dave Plowman dave(a)davenoise.co.uk London SW
To e-mail, change noise into sound.
From: Mark Zacharias on 2 Mar 2010 08:19
"amdx" <amdx(a)knology.net> wrote in message
news:87ca0$4b8c2ff3$d8baf3ed$1212(a)KNOLOGY.NET...
> It's time, I need to purchase a new multimeter, home benchwork only.
> I could work with a autorangeing meter as long as it's not slow.
> AC, DC, volts, ohms, amps, capacitance ok but I have a cap meter.
> I generally use a 0.1 ohm or 0.01 ohm resistor as a shunt to measure
> current.
> I'm looking at the Fluke meters, I want it to last 15 years, the one after
> that will last my lifetime! I figure on spending around $200.
> Any suggestions about another quality brand or Fluke Models?
>
> Mike
>
>
>


Hard to beat a Fluke 87 series V. There is a new 28 series II which is
almost identical function, and uses AA cells instead of a 9V battery, but
it's brand new, not discounted yet, costs 50.00 more than the 87, and here's
the kicker for me:

The 800 hour rated battery life is great, yes? Except for the battery
corrosion problems we are inevitably going to see resulting from this.
People are simply going to forget to change their batteries in time.
Hopefully Fluke will have the appropriate replacement parts available...

A 9V battery in a 87V should last about 1 year of normal use, and 9V models
are double encased, therefore less prone to leakage. Current consumption in
auto-power off mode is vastly improved over the III series, about 25uA. My
85III ia useless in this respect, drawing very nearly as much in
"power-save" mode as in actual operation.

Contrary to popular belief however, Fluke's vaunted lifetime warranty is
only to the original purchaser. On the bright side, they are all over eBay
for less than 250.00 used.

The 28II is waterproof though! And 10 foot drop resistant! How cool!

Mark Z.

From: amdx on 2 Mar 2010 10:03

"Jeff Liebermann" <jeffl(a)cruzio.com> wrote in message
news:6dgpo51eltkod26rnrbku6c0jf6b2t9146(a)4ax.com...
> On Mon, 1 Mar 2010 15:21:56 -0600, "amdx" <amdx(a)knology.net> wrote:
>
>>It's time, I need to purchase a new multimeter, home benchwork only.
>> I could work with a autorangeing meter as long as it's not slow.
>>AC, DC, volts, ohms, amps, capacitance ok but I have a cap meter.
>> I generally use a 0.1 ohm or 0.01 ohm resistor as a shunt to measure
>>current.
>> I'm looking at the Fluke meters, I want it to last 15 years, the one
>> after
>>that will last my lifetime! I figure on spending around $200.
>> Any suggestions about another quality brand or Fluke Models?
>
> Much as I like Fluke (I have a model 12 and 75) they're kinda
> expensive. The 75 was stolen from a former employer in 1982. The
> Model 12 was obtained in liu of payment on a repair job in about 1995.
> Both are totally reliable and very easy on consuming 9v batteries.
>
> A few months ago, I bought three Extech DVM's.
> <http://www.extech.com/instruments/categories.asp?catid=49>
> <http://www.extech.com/instruments/product.asp?catid=49&prodid=296>
> About $40. Comes with a temp probe, rubber bounce protector, big
> digits, and the usual probes. The frequency counter goes to 5MHz
> which has been very handy. One has already survived about 3 months
> banging around my vehicle's toolbox, so I think it's sufficiently
> rugged.

Hows the low ohms range, the problem I have with my meter is on
low ohm range. When I short the leads it might read 15 ohms, pull
the leads, twist, yell at them and it may go down to 0.5 ohms.
I have used Cremolin on them but this is a problem that is getting old!
The other day I had an odd reading and had to rotate the function switch
to get a normal reading. This is a Tenma. I have a Beckman HD 110 that
went flakey many years ago and a Fluke 77 that a battery leaked in. Meters
I should have tossed them 15 yrs ago, but ya know "someday" I might fix
them. ;-)
Mike


From: amdx on 2 Mar 2010 10:06

"Okkim Atnarivik" <Okkim.atnarivik(a)twentyfour.fi.invalid> wrote in message
news:hmijr1$bb$1(a)epityr.hut.fi...
> In sci.electronics.design amdx <amdx(a)knology.net> wrote:
> : It's time, I need to purchase a new multimeter, home benchwork only.
> : I could work with a autorangeing meter as long as it's not slow.
> : AC, DC, volts, ohms, amps, capacitance ok but I have a cap meter.
> : I generally use a 0.1 ohm or 0.01 ohm resistor as a shunt to measure
> : current.
> : I'm looking at the Fluke meters, I want it to last 15 years, the one
> after
> : that will last my lifetime! I figure on spending around $200.
> : Any suggestions about another quality brand or Fluke Models?
>
> Well, this is not a known quality brand, but I was very happy
> with my TENMA, I think the equivalent current model is the 72-7732.
> 181e in Farnell. Mine had a 80mV range with 10uV lowest count, which
> might come handy with your low value shunts. That range was very useful
> in SQUID work. The 72-7732 seems to have a 40mV range with same reso.
> My unit had a robust and solid feel and served me well for 3 or 4 years,
> and felt like it would serve much longer. Unfortunately British Airways
> lost my luggage last year and down that drain went the DMM, too.
>
Yea, have a Tenma now, it's worked for me at least 15 years, but has
connector problems. I like that low volt range. I'll look into the price.
Mike


From: amdx on 2 Mar 2010 10:16

"Jeff Liebermann" <jeffl(a)cruzio.com> wrote in message
news:6dgpo51eltkod26rnrbku6c0jf6b2t9146(a)4ax.com...
> On Mon, 1 Mar 2010 15:21:56 -0600, "amdx" <amdx(a)knology.net> wrote:
>
>>It's time, I need to purchase a new multimeter, home benchwork only.
>> I could work with a autorangeing meter as long as it's not slow.
>>AC, DC, volts, ohms, amps, capacitance ok but I have a cap meter.
>> I generally use a 0.1 ohm or 0.01 ohm resistor as a shunt to measure
>>current.
>> I'm looking at the Fluke meters, I want it to last 15 years, the one
>> after
>>that will last my lifetime! I figure on spending around $200.
>> Any suggestions about another quality brand or Fluke Models?
>
> Much as I like Fluke (I have a model 12 and 75) they're kinda
> expensive. The 75 was stolen from a former employer in 1982. The
> Model 12 was obtained in liu of payment on a repair job in about 1995.
> Both are totally reliable and very easy on consuming 9v batteries.
>
> A few months ago, I bought three Extech DVM's.
> <http://www.extech.com/instruments/categories.asp?catid=49>
> <http://www.extech.com/instruments/product.asp?catid=49&prodid=296>
> About $40. Comes with a temp probe, rubber bounce protector, big
> digits, and the usual probes. The frequency counter goes to 5MHz
> which has been very handy. One has already survived about 3 months
> banging around my vehicle's toolbox, so I think it's sufficiently
> rugged.
>
Hey Jeff, What is the autorange time? Say I probed a 9mv signal, how
long before it reads correct?
Mike


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