A computerized central analytical facility is described which remotely samples from 70 process points and analyzes the gas samples by mass spectrometry and other analytical techniques. Samples are transported through a capillary by pressure gradient to a vacuum manifold and ultimately to the inlet system of either of two mass spectrometers. Process pressures vary from 400 to 2500 Torr which assures viscous, nonseparative flow within the capillaries, the capillary whose inside diameters range from 0.03 to 0.05 cm. An exhaust‐gas recovery system to retain valuable tritium from samples is also described. The sampling manifold and inlet systems are fabricated from high vacuum components and tubing that is polished on interior surfaces. All valves can be computer controlled or manually operated from a central control console. Valve actuation is verified by process changes. The gas is analyzed by a computer‐controlled, magnetic‐sector mass spectrometer, the results archived in another computer and the approved results sent to the requestor via a data network.
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Research Article|
May 01 1986
Central gas analysis laboratory with remote sampling
R. E. Ellefson;
R. E. Ellefson
Monsanto Research Corporation‐Mound, Miamisburg, Ohio 45342
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F. E. Morgan;
F. E. Morgan
Monsanto Research Corporation‐Mound, Miamisburg, Ohio 45342
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B. E. Anderson
B. E. Anderson
Monsanto Research Corporation‐Mound, Miamisburg, Ohio 45342
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J. Vac. Sci. Technol. A 4, 306–309 (1986)
Article history
Received:
October 03 1985
Accepted:
December 06 1985
Citation
R. E. Ellefson, F. E. Morgan, B. E. Anderson; Central gas analysis laboratory with remote sampling. J. Vac. Sci. Technol. A 1 May 1986; 4 (3): 306–309. https://doi.org/10.1116/1.573915
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