HI Rick--

I've heard it too...

take care

gerry

p.s. I take it you have the "magnetic shield" on the turbo pump adjacent 
to the magnet.  Just checking.  Also, switching gases then going back to 
SO2 changes intensity (or maybe I'm just getting def).

Richard Doucett wrote:
> Hello all,
>
> Might anyone know why my Delta Plus Advantage emits a high-pitch whine 
> when running sulfur by EA-IRMS???  It does not do this for any other 
> gas configuration.
>
> I will accept humorous answers as well as bona-fide truths.
>
> Cheers,
> Rick
>
> Richard (Rick) Doucett, Ph.D., Associate Director
> Colorado Plateau Analytical Laboratory
> Northern Arizona University
> Tel: 928.523.0967 (lab)
> Tel: 928.523.7265 (office)
> Fax: 928.523.7500
>
> Stable Isotope Lab Website: http://www.isotope.nau.edu
>
> Mailing address for packages:
> Dept. Biological Sciences
> Northern Arizona University
> Building 21, South Beaver Street
> Flagstaff, AZ, 86011-5640