Yokogawa GC1000 Mark II Process Gas Chromatograph - Manual (Page 24)

<3. Overview >
3-3
IM 11B03A03-01E 3rd Edition : Aug. 23. 2006-00
3.2.5 Programmed-temperature Oven
The programmed-temperature oven has an internal pressure protection / Type X purged
structure. It contains a column that separates multi-component mixture samples into
individual components and leads them to the detector in sequence. The temperature can
be set to a fixed setting or it can be programmed. The allowable temperature range is 60 to
320
°
C without a cooling system, or 5 to 320
°
C with a cooling system, and the temperature
can be set to rise from between 0.1 to 30
°
C/min (setting by 0.1
°
C unit). Up to three tem-
perature-rise patterns can be programmed.
3.2.6 Analyzer Base Sampling Section
The analyzer base sampling section is equipped with sample and standard gas streams,
and controls the sample pressure and flow rate. It also selectively sends the sample to be
analyzed in a stream, and can switch the standard gas to the isothermal or the pro-
grammed-temperature oven by a valve depending on the signal sent from the electronic
section.
If the analyzer does not contain the analyzer base sampling section, then samples can be
processed externally by supplying air to a separate sampling section.