Gas chromatograph and method of operating same

Details Gas chromatograph and method of operating same Gas chromatograph and method of operating same

1997-04-03

1998-09-08

Spitzer, Robert

Gas separation: processes

With control responsive to sensed condition

Pressure sensed

95 82, 95 87, 96102, 96105, B01D 1508

Patent

active

058039511

ABSTRACT:
A gas chromatograph has a control unit which normally carries out a pressure control so as to keep the pressure inside the vaporization chamber at a specified target level while the flow rate of a carrier gas into the vaporization chamber is kept constant. When a liquid sample is injected to cause a sudden rise in the pressure, the normal pressure control is temporarily stopped, say, for keeping the split ratio unchanged. In order to keep unchanged the retention time for components being analyzed although the pressure inside the vaporization chamber rises, the target value for the pressure control is reduced for an appropriate length of time after the temporary stopping of pressure control is discontinued.

REFERENCES:
patent: 3496702 (1970-02-01), Carel et al.
patent: 3581465 (1971-06-01), Haruki et al.
patent: 3668834 (1972-06-01), Deans
patent: 3881892 (1975-05-01), Gehrke et al.
patent: 4038053 (1977-07-01), Golay
patent: 4650499 (1987-03-01), Scott
patent: 4732581 (1988-03-01), Cheh et al.
patent: 4976750 (1990-12-01), Munari
patent: 5094741 (1992-03-01), Frank et al.
patent: 5108466 (1992-04-01), Klein et al.
patent: 5242471 (1993-09-01), Markham et al.
patent: 5391221 (1995-02-01), Fukushima et al.
patent: 5431712 (1995-07-01), Henderson et al.
patent: 5467635 (1995-11-01), Nakagawa et al.
patent: 5531959 (1996-07-01), Johnson et al.
patent: 5545252 (1996-08-01), Hinshaw et al.
patent: 5567227 (1996-10-01), Henderson

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