We have been using a laser spectrometer Liquid Water Isotope Analyzer
that since 2011.
Its reference is: LGR DTL-100 LWIA-24d Model 908-0008-2001 Series:
10-0092 Manufactured by: 11/2010
For some time now we can no longer make measurements. They are no longer
We have recently changed the valves, cleaned the mirrors, the four,
filter, changed syringe and changed from septum to each set.
The volume is constant but the value is too unstable.
The ring down cell: RD_tau was in 2011 at 5.1 μs, in 2016 at 3.9 μs and
currently between 2.9 and 3.2 μs.
In addition, the transmitted intensity is only 0.8V while in 2011 it was
The height of the large peak represents only a quarter of the signal.
Did somebody already encounter these problems ? Thank you for your help
Avignon University, France
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