Hello all,

The reason why UL has split IEC 61010-1 into two standards (UL 3101-1 and
3111-1) has to do with the Instrument Society of America (ISA). The US
National Standard for Laboratory Equipment has been owned by UL while the US
National Standard for Test and Measurement Equipment has been owned by ISA.
It turns out that ISA S82.01 is the US National Standard for T&M Equipment
while the last time a saw it, UL 3101-1 was in the process to become the US
National Standard for Laboratoty Equipment, replacing UL 1262.

Regards,
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-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Thursday, January 18, 2001 3:36 AM
To: Veit, Andy
Cc: [email protected]
Subject: Re: UL 3111-1 vs. UL 3101-1



Andy

I use these two standards on a daily bases and you are right, they are
pretty
much identical. Yet to find a difference.

UL3101-1 Electrical Equipment for Laboratory Use - General Requirements

UL3111-1 Electrical  Measuring and Test Equipment - General Requirements.

UL3111-1 is the UL version of IEC1010 when it comes to electrical test
equipment, e.g. a DVM.

Do not ask me why UL in it's infinite wisdom thought they needed two
identical
standards Probably to make you two inspection fees on two Files. !!!

"Veit, Andy" wrote:

> Folks-
> Can someone give the scope of UL 3111-1?  Or tell me how is it's scope
> differs from UL 3101-1?
> I have a copy of UL 3101-1, and it appears that it is very similar to IEC
> 1010-1, but I don't have a copy of UL 3111-1 (yet!).
> I read a message in the IEEE-PSTC archive where someone said that UL
created
> the standards 3111-1 and 3101-1 from IEC 1010-1, but there were no further
> details about how the standards differ.
>
> Thank you-
> -Andy Veit
>
> Andrew Veit
> Systems Design Engineer
> MTS Systems Corp
> Ph: 919.677.2507
> Fax: 919.677.2480
> 1001 Sheldon Drive
> Cary, NC 27513
>
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--

Andrew Carson - Product Safety Engineer
Xyratex Engineering Laboratory
Tele 023 92496855 Fax 023 92496014



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