CGC using a programmable electronic pressure controller

Autor: R. John Phillips, Michael Q. Thompson, Ken J. Klein, Bruce W. Hermann, W. Dale Snyder, Lesley M Freed
Rok vydání: 1990
Předmět:
Zdroj: Journal of High Resolution Chromatography. 13:361-365
ISSN: 1521-4168
0935-6304
DOI: 10.1002/jhrc.1240130514
Popis: Capillary gas chromatographic separations were performed with an electronic pressure control system developed to provide precise closed-loop control of inlet pressure through the use of a solid state micro-machined pressure sensor and electronically controlled proportional valve. The closed-loop control of the electronic system provided better precision than the open-loop control achieved by manual pressure regulation. Closed-loop control can perform pressure programming, which can be combined with temperature programming to optimize separations. The pressure sensor monitors the integrity of the flow system and singals the controller to reduce flow in the presence of a sudden loss of system pressure.
Databáze: OpenAIRE
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