Stable Isotope Geochemistry


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Robert Van Hale <[log in to unmask]>
Reply To:
Stable Isotope Geochemistry <[log in to unmask]>
Mon, 23 Feb 2004 20:03:09 +1300
text/plain (39 lines)
Hi Anke,
I think the Carlo Erba manual refers just to the replaceable rubber
diaphragm of the valve. Replace em whenever suspicious. To test operation,
see that you get an increasing blank due to the oxygen when increasing the
"oxy stop" time from zero (increasing the volume of oxygen injection). I
have described this more fully in earlier posting.
Robert Van HAle

----- Original Message -----
From: "Anke Heier" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, February 21, 2004 2:20 AM
Subject: [ISOGEOCHEM] EA valve

> Dear Listmembers,
> I work with a Carlo Erba EA 1110 and have now the problem that my copper
> has a very short life time. The manual says that this problem is caused
> by a defective solenoid valve EV-1. Before I am going to buy a new one I
> would like to ask if a short copper life time could cause by another
> reason (I always measured same kind of samples) or how I could test the
> function of that valve.
> Thanks
> Anke
> Anke Heier
> Federal Institute for Risk Assessment
> Thielallee 88-92
> 14195 Berlin
> Germany
> Tel.: +49 1888 412 3379
> Fax: +49 1888 412 3685
> Web:
> Email: [log in to unmask]