Date: Tue Oct 7 17:16:45 2008

Author: Urs Lauterburg

Subject: Re: in need of some good multimeters

Post:

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Bill,

I can feel your pain. It seems as if the fuse blowing with
multimeters increasingly affects all the so called ''developed''
countries. In the old days students were more careful and had much
more respect for the equipment. As a response to this development we
decided to get multimeters from the German manufacturer
Gossen-Metrawatt like the one shown here:

http://www.gossenmetrawatt.com/english/produkte/metrahitbase.htm

What's good about them is a mechanical protection system which makes
the voltage and the current input plugs only accessible if selected
as such. This simple precaution has considerably cut the hazards
down. Additionally the multimeters are internally well fused and the
fuses are easily accessed, although you do need a Phillips
screwdriver. The fuses and the instruments are not so cheap however,
they have helped us to battle the fuse frying sessions aka
electronics labs.

So there are manufacturers who do try to solve the problems we fight with.

Regards

Urs

Urs Lauterburg
Physics demonstrator
Physikalisches Institut
University of Bern
Switzerland

>Hi Taplers,
>
>Here I go again, We have the old Keithley 168's, and, now the new BK
>Precision 2831D, both which invite a "labor of hatred and anger" as
>they require that the meter be partly disassembled in order to
>replace the current fuse(s) - and the students blow a lot of them.
>
>I do not want the "opportunity" to build external meter-protecting
>fuse boards, instead I believe that meter-makers should get the
>message about what we need. Surely with thousands of schools across
>the country using digital multimeters it should be practical for
>some meter maker to manufacturer what we need.
>
>As you will see I am cc'ing makers and distributors of meters whom I
>know about - but that is not many. My request is that we "impact" as
>many meter makers and manufacturers as possible with this
>information, once and for all, so that within a few years we will be
>able to buy meters more usable in student labs. Could you please
>forward this e-mail to any meter makers and meter distributors you
>know about.
>
>Many thanks for any efforts,
>
>Bill Norwood
>U of MD at College Park
>
>
>
>From: tap-l-owner@lists.ncsu.edu [mailto:tap-l-owner@lists.ncsu.edu]
>On Behalf Of Sharah Yasharahla
>Sent: Monday, September 29, 2008 10:33 AM
>To: tap-l@lists.ncsu.edu
>Subject: Re: [tap-l] in need of some good multimeters
>
>
>We have 3 different kinds; Triplett 9005-A, 9300GB and SE MM6287 ,
>there has been some trouble in measuring the current in circuits
>Sharah Yasharahla
>Lab Coordinator
>Physics Department
>Science Center Rm. 192
>404-270-5847
>Each passing day expands the frontiers of man's knowledge , bringing
>to light more and more of the Divine wisdom in creation

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Bill,

I can feel your pain. It seems as if the fuse blowing with
multimeters increasingly affects all the so called ''developed''
countries. In the old days students were more careful and had much
more respect for the equipment. As a response to this development we
decided to get multimeters from the German manufacturer
Gossen-Metrawatt like the one shown here:

http://www.gossenmetrawatt.com/english/produkte/metrahitbase.htm

What's good about them is a mechanical protection system which
makes the voltage and the current input plugs only accessible if
selected as such. This simple precaution has considerably cut the
hazards down. Additionally the multimeters are internally well fused
and the fuses are easily accessed, although you do need a Phillips
screwdriver. The fuses and the instruments are not so cheap however,
they have helped us to battle the fuse frying sessions aka electronics
labs.

So there are manufacturers who do try to solve the problems we fight
with.

Regards

Urs

Urs Lauterburg
Physics demonstrator
Physikalisches Institut
University of Bern
Switzerland

Hi
Taplers,

Here I go again, We have
the old Keithley 168=B9s, and, now the new BK Precision 2831D, both
which invite a =B3labor of hatred and anger=B2 as they require that
the meter be partly disassembled in order to replace the current
fuse(s) =AD and the students blow a lot of them.

I do not want the
=B3opportunity=B2 to build external meter-protecting fuse boards,
instead I believe that meter-makers should get the message about what
we need. Surely with thousands of schools across the country
using digital multimeters it should be practical for some meter
maker to manufacturer what we need.

As you will see I am
cc'ing makers and distributors of meters whom I know about - but that
is not many. My request is that we "impact" as many meter
makers and manufacturers as possible with this information, once and
for all, so that within a few years we will be able to buy meters more
usable in student labs. Could you please forward this e-mail to any
meter makers and meter distributors you know
about.

Many thanks for any
efforts,

Bill
Norwood
U of MD at College
Park




From: tap-l-owner@lists.ncsu.edu
[mailto:tap-l-owner@lists.ncsu.edu] On Behalf Of Sharah
Yasharahla
Sent: Monday, September 29, 2008 10:33 AM
To: tap-l@lists.ncsu.edu
Subject: Re: [tap-l] in need of some good
multimeters


We have 3 different kinds;
Triplett 9005-A, 9300GB and SE MM6287 , there has been some
trouble in measuring the current in circuits
Sharah Yasharahla
Lab Coordinator
Physics Department
Science Center Rm. 192
404-270-5847
Each passing day expands the frontiers of man's knowledge , bringing
to light more and more of the Divine wisdom in
creation



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