PerkinElmer CLARUS 680 GC User Manual

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TCD
The Thermal Conductivity Detector (TCD) is a dual-channel detector which
measures the difference in thermal conductivity between carrier gas flowing
through a reference channel and carrier gas plus sample flowing through an
analytical channel.
Four tungsten-rhenium filaments are connected in a bridge circuit, two in each
channel. The TCD is set up with the same amount of carrier gas flowing through
both channels. The presence of a sample component in the carrier gas flowing
through the analytical channel changes the resistance of the filaments in that
channel. This unbalances the bridge and produces a signal proportional to the
amount of sample.
The following screens show the Active Method screen and the corresponding
settings in the Configuration screen.
Active Method Configuration Screen

PerkinElmer CLARUS 680 GC Specifications

General

Brand	PerkinElmer
Model	CLARUS 680 GC
Category	Laboratory Equipment
Language	English