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Miniature gas chromatograph with heated gas inlet fitting, heated tubing, and heated microvalve assembly
Miniature gas chromatograph with heated gas inlet fitting, heated tubing, and heated microvalve assembly
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机译:微型气相色谱仪,带有加热气体入口接头,加热管和加热微阀组件
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摘要
A miniature gas chromatograph with thermostatically-controlled heating of its component parts which contact and conduct the sample to the analytical column. The microvalve assembly of the gas chromatograph is heated by passing a thermostatically-controlled electrical current through a metallic conductor formed on a surface of the microvalve assembly. The tubing which conducts sample from the gas chromatograph sample inlet to the microvalve assembly is heated by passing a thermostatically-controlled electrical current directly through the tubing or through a metal layer formed around the tubing. The sample inlet fitting is heated by a wire heater element wrapped around it. Each heater has an associated temperature sensor for controlling the amount of heating to maintain a predetermined temperature.
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