User guide

Flow and Pressure Modules 7
Advanced User Guide 157
Detector Modules
These are specific to the detector with which they are supplied,
and differ according to the needs of that detector. For example,
the FID module must supply controlled amounts of air,
hydrogen, and makeup gas. The TCD module supplies the
reference and makeup gases, but includes the reference
switching valve that is essential to detector operation.
Module locations depend on the type of module and the length
of the tubing connecting it to the detector.
If you have a Front detector, its flow module must go in Slot 3.
If you have a Back detector, its flow module must go in Slot 4.
If you have a TCD detector mounted on the left side of the GC,
its flow module mounts in a special bracket near the detector.