Kenneth Klein IT specialist - Wilmington, DE
Name variants: Ken Klein, Kenny Klein
Professions & Specialties
Programmer • Computer Programmer
Experience & Education
| United States Patent | Inventor | Appl. No. | Assignee |
|---|---|---|---|
|
#4994096 Feb 19, 1991 Filed: May 9, 1989 |
Kenneth J. Klein (Wilmington, DE) R. John Phillips (Swarthmore, PA) Lesley M. Freed (Wilmington, DE) Michael Thompson (Coatesville, PA) | 7/349740 |
Hewlett-Packard Co. (Palo Alto, CA) |
| International Classification: | B01D 1508 | 55 20 |
Patent:
Gas chromatograph having integrated pressure programmer
Abstract:
Apparatus and methods are disclosed for performing a chromatographic separation of a given compound utilizing programmed temperature and mass flow wherein the compound is injected into a pressurized carrier gas and passed through a column and wherein a portion of the column is subjected to a temperature profile, by determining the pressure of the carrier gas and generating a pressure information signal representative of such pressure, storing desired carrier gas mass flow information and temperature profile information, and controlling the pressure of the carrier gas in response to the mass flow information, the temperature profile information and the pressure information signal, so that as the temperature profile information changes with time, the desired mass flow of carrier gas at a corresponding time is maintained by controlling the pressure of the carrier gas.
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