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1. Overview
1.3
Necessary Operation Conditions for Gases
The following gases are required for the analyzer:
(1) Sample gas (liquid)
This is a gas (liquid) subject to analysis from the process line.
(2) Carrier gas
Prepare a gas cylinder for the carrier gas.
It is recommended that a spare cylinder be prepared considering the convenience in
replacement.
If two different carrier gases are used, prepare two gas cylinders respectively.
The gas must satisfy the following conditions
• the purity must be 99.99 % or more
• the organic components must be 5 ppm or less
• the dew point must be –60 ºC or less.
(3) Standard gas
This gas is used for calibration. Prepare a gas cylinder including measurement component.
Since up to three different standard gases can be used for automatic calibration, prepare a gas
cylinder suitable for the gas.
(4) FID/FPD combustion hydrogen gas
This hydrogen gas is necessary when either FID or FPD is used as a detector. Prepare pure
hydrogen gas in a cylinder.
In this case also, it is recommended that a spare cylinder be prepared considering the
convenience in replacement.
The gas must satisfy the following conditions
• the purity must be 99.99 % or more
• the organic components must be 5 ppm or less
• the dew point must be –60 ºC or less.
(5) Air for valve driving and purging
This air is used for driving valves and as purging air. Prepare the air supply at 350 kPa or
more, and 0.15 m3/min or more (for GC1000T/GC1000W/GC1000D) or 0.1 m3/min or more
(for GC1000E/GC1000C/GC1000S). Flow rate adjustment is not necessary because it is
being adjusted at the time of shipping. When the air is supplied, fixed flow rate is obtained
automatically. When using cooling device, prepare the air supply at 500 kPa or more, and 0.45
m3/min or more, and air dew point less than –20 °C.
TI 11B03A03-03E
Oct. 11, 2011-00