We are in the process of evaluating a site for installation of a 600. In
reviewing the plans we noticed that there will be a welding shop
approximately 150 feet from the proposed instrument location (in the same
building).
The welding slated for the shop is called TIG (tungsten inert gas). I have
been told that TIG is also know as GTAW (gas tungsten arc welding).
Apparently a stream of argon gas is used to shield a tungsten electrode and
the molten weld pool as an arc is formed between the electrode and the metal
being welded. I once a bad experience with an older style arc welder
causing interference with a 500 MHz instrument from an adjacent
construction site (might have been 100 feet or more).
Two questions immediately come to mind -
1) Does anyone have direct experience with a TIG welder causing or not
causing interference with a spectrometer?
2) Has anyone found a way to eliminate interference from an arc welder by
special grounding, shielding, or other means?
Thanks in advance for any replies.
Steve
Steve Pitzenberger
Merck Research Labs
West Point, PA 19486
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Received on Fri Aug 16 2002 - 17:17:03 MST