Stable Isotope Geochemistry


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"Dr. Bruno Glaser" <[log in to unmask]>
Reply To:
Sat, 21 Feb 2004 23:02:38 +0100
text/plain (134 lines)
Dear Gilles,

please could you explain in more detail the problems encountered with PLOT
columns when rapidly increasing pressure from EPC. Could this also be the
case with other types of columns?

Thanks a lot


Dr. Bruno Glaser
Institute of Soil Science and Soil Geography
University of Bayreuth
D-95440 Bayreuth
Email: [log in to unmask]
Phone: ++49-921-552254
Fax: ++49-921-552246

-----Ursprüngliche Nachricht-----
Von: Stable Isotope Geochemistry [mailto:[log in to unmask]]Im Auftrag
von Gilles St-Jean
Gesendet: Donnerstag, 19. Februar 2004 22:51
An: [log in to unmask]
Betreff: Re: [ISOGEOCHEM] Isodat 2.0

Hi all
It seems that Isodat 2.0 will run happily on Windows XP (with all the latest
patches) with the older GPIB cards (both the ISA and the PCI).  I have also
run the GPIB using a USB port with National Instruments' GPIB-USB-B with
success from a laptop as well as the normal computer running the IRMS.
There seems to be 2 obvious glitches with the software where one of which
has already received a fix and those are:
1) The amplifier zero (measure) routine crashes.  A faulty .dll has been
repaired and this bug is now gone and will be part of a post 1.35 service
2) The Peak Center Offset routine hangs.  99.9999% of the users don't need
this remnant of Isodat old. To be fixed later.

The driver for the ISA runs right out of the Isodat 2.0 install and the PCI
driver for XP from NI is available on their website.

We have run close to 500 samples of EA (N2, CO2 and SO2) and TOC-Analyser in
the last two weeks without a glitch (ISA GPIB card).  Reference injection
from both the bellows and the ConFlo II-III run without a hitch either.  I
think it is safe to say that you can go to Isodat 2.0 and run your samples.
There is a bit more of a learning curve with this version since you can now
save GC (HP and THERMO-TRACEGC) methods (injector temperarures, flow etc..)
as well as autosampler methods (yes with obvious names as a file).  You can
mix and match any of these to an IRMS method.  Really nice stuff, no more
front panel buttons to program. Also you don't need the game port anymore
(see a previous posting from me about this).  If you don't have enough COM
ports on the computer use a USB-COM port adapter to add as many as you need.

PS Beware of this, ease of use, if you use PLOT columns.  Rapid changes in
pressure from EPC can destroy a $1200 PLOT column, read the warning sheet
with the PLOT column for more info.


Gilles St-Jean
U. d'Ottawa / U. of Ottawa
Sciences de la Terre / Earth Sciences
Laboratoires d'isotopes- G.G.Hatch -Isotope Laboratories
140 Louis Pasteur, Ottawa, Ontario, Canada
K1N 6N5
Tel: 1-613-562-5800 xt 6830 (Bureau / Office)
                    xt 6839 (Bureau 2/ Office 2)
                    xt 6836 (Lab)
Fax: 1-613-562-5192
Courriel / e-mail: [log in to unmask]
-----Message d'origine-----
De : Stable Isotope Geochemistry [mailto:[log in to unmask]]De la part
de David A. Mucciarone
Envoyé : 20 janvier 2004 14:09
Ŕ : [log in to unmask]
Objet : Re: [ISOGEOCHEM] Isodat 2.0

I recently had a conversation with Frank Trensch about upgrading a Delta
plus to run the latest version of ISODAT under Win-XP. This is my
understanding. If you want an optical interface you need to purchase a new
Delta XP/353/etc. Those of us with Delta plus IRMS are stuck with NT until
National Instruments provides either Windows 2000 or Windows XP drivers for
either the ISA (probably unlikely) or the PCI interface cards (more likely).
Frank mentioned that if this happens then there should be
no/minimal/solvable problem running a newer version of Windows on the older
Delta plus instruments.

To date folks have been able to run/use Win 2000 with the ISODAT-NT version
but not controlling the instrument well or at all. They have been using it
mostly to post-process data under Win-2000.

So we may be stuck for a while using Win-NT and ISODAT-NT until either
someone out there works it out or until National Instruments provides a new
driver. Something some of us have come to terms with on Finnigan
instruments. Some of us have gone from Concurrent DOS to Real32 to Win-NT
and perhaps XP running a multitude of ISODAT versions. For sometime I
thought I would be stuck running Real32 so personally the Win-NT version is
welcomed with the hope that I have it less than Real32.


At 05:52 PM 1/17/2004 -0500, you wrote:

I am considering this, as I don't care to be stuck with NT for the life of
my instrument, which is currently only 3 years old. Has anyone tried it?
What exactly does 'not stable' mean? A glitch every run or every 100 runs?
Every 100 would put it on par with NT ver 1.2 in my experience, and I lived
with for almost a year.

Is there any way of upgrading a Delta Plus to the optical interface? I know
the bulk of the electronics and controls are different between a Plus and a
XP and I don't want all that (well, I do, but I know that's not possible),
but It would be nice to have a simple optical interface for my Plus that
does what my GPIB does now.

I spoke to Frank Trensch on this matter also and I asked the very same
question. He said the only way to get the optical interface is to purchase a
Delta XP. It seems the electronics are completely different in the two and
upgrade is not possible.
David A. Mucciarone
Stanford University
Dept. of Geological & Environmental Sciences
Building 320, Room 118
Stanford, CA 94305-2115
650-723-0817 (O) 650-725-2199 (F)