Emerson Rosemount 700XA Reference Manual page 36

Equipment description and specifications
June 2022
2.1.2 Upper compartment
The upper compartment contains the following components:
Valves
Column module
Thermal conductivity
detector (TCD)
Two heating
elements
One temperature
switch for each
heating element
Pressure switch
Flame ionization
detector (FID)
Flame photometric
detector (FPD)
Micro flame
photometric
detector (µFPD)
Methanator
Liquid sample
injection valve (LSIV)
Related information
Micro flame photometric detector (µFPD)
36
There are two types of XA valves: 6-port and 10-port. A gas
chromatograph (GC) can have a maximum of six XA valves
consisting of a maximum of four 10-port valves.
Either capillary or micro-packed.
The GC has a maximum of two TCDs as well as a micro flame
photometric detector (µFPD), or a flame ionization detector
(FID).
A top hat heater and a column heater.
The switch turns off its heating element if the heating element
reaches 320 °F (160 °C).
The pressure switch activates when the carrier pressure falls
below a predetermined set point. When activated, the switch
triggers a general alarm that displays on the front panel or local
operator interface (LOI) and in Rosemount MON2020.
The optional FID detects trace levels of hydrocarbons.
The optional FPD, which detects trace levels of sulfur
compounds, can be used in place of a TCD, installed as a side car
component. For more information, refer to the
FPD for Gas Chromatographs Hardware Reference Manual.
The optional integral µFPD detects trace levels of sulfur
compounds.
The methanator, or catalytic converter, is an optional
component that converts otherwise undetectable carbon
dioxide and/or carbon monoxide into methane by adding
hydrogen and heat to the sample.
The optional LSIV can vaporize a liquid sample, thereby
expanding the GC's capability to measure liquids.
Reference Manual
2-3-9000-744
Emerson.com/Rosemount