Electric resistance heating devices – Heating devices – Continuous flow type fluid heater
Patent
1993-11-30
1996-08-06
Jeffery, John A.
Electric resistance heating devices
Heating devices
Continuous flow type fluid heater
392465, 392466, 219201, 73 2336, 73 2342, 7386311, 96102, 422 89, 285 41, 137341, H05B 102, G01N 3108, F24H 110
Patent
active
055442765
ABSTRACT:
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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Johnson Paul H.
Loux Alan D.
Minners R. Sjhon
Jeffery John A.
Klivans Norman R.
Microsensors Technology, Inc.
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