2.1.2
Upper compartment
The upper compartment contains the following components:
Valves
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.
Column module
Either capillary or micro-packed.
Thermal conductivity
detector (TCD)
The GC has a maximum of two TCDs as well as a micro flame
photometric detector (µFPD), or a flame ionization detector
(FID).
Two heating
elements
A top hat heater and a column heater.
One temperature
switch for each
heating element
The switch turns off its heating element if the heating element
reaches 320 °F (160 °C).
Pressure switch
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.
Flame ionization
detector (FID)
The optional FID detects trace levels of hydrocarbons.
Flame photometric
detector (FPD)
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.
Micro flame
photometric
detector (µFPD)
The optional integral µFPD detects trace levels of sulfur
compounds.
Methanator
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.
Liquid sample
injection valve (LSIV)
The optional LSIV can vaporize a liquid sample, thereby
expanding the GC’s capability to measure liquids.
Related information
Micro flame photometric detector (µFPD)
Equipment description and specifications
Reference Manual
June 2022
2-3-9000-744
36
Emerson.com/Rosemount
Summary of Contents for Rosemount 700XA
Page 1: ...Reference Manual 2 3 9000 744 Rev L June 2022 Rosemount 700XA Gas Chromatograph ...
Page 6: ...TxD TD or Sout Transmit data or signal out 6 ...
Page 30: ...Overview Reference Manual June 2022 2 3 9000 744 30 Emerson com Rosemount ...
Page 100: ...Installation and start up Reference Manual June 2022 2 3 9000 744 100 Emerson com Rosemount ...
Page 182: ...Operation and maintenance Reference Manual June 2022 2 3 9000 744 182 Emerson com Rosemount ...
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