2 Installation
2.6
2.
19
GC-2010 Plus
2.6Gas supply plumbing
Q Gas type and supply purity
The following gases and associated purity valves are required to maintain optimal
performance of the unit.
For detectors other than FID and TCD, refer to the instruction manual corresponding to each
detector.
Carrier gas
Helium purity: 99.999 % or more
Nitrogen purity: 99.999 % or more
Makeup gas
FID
Nitrogen purity: 99.999 % or more
Helium purity: 99.999 % or more
TCD
Nitrogen purity: 99.999 % or more
Helium puritiy: 99.999 % or more
Argon purity: 99.999 or more
Detector gas
FID
Hydrogen purity: 99.999 % or more
Air Dry air cylinder (including total hydrocarbons of 1 ppm or less)
NOTE If a gas that does not satisfy the purity described above is used even once, the instrument may not
satisfy the minimum detection specification even after changing the gas to a high-purity one.
Gases with a purity of 99.995%, dry air excluding organic substances, or air compressed using an
oilless compressor and then dehumidified can be used when high sensitivity analysis is not necessary.
Gas supply pressures
Carrier gas: 300 - 980 kPa
Make-up gas: 300 - 980 kPa
Hydrogen: 300 - 500 kPa
Air: 300 - 500 kPa
The relationship of kPa and bar is as follows
100 kPa = 1 bar
Convert units between kPa and kgf/cm
2
as follows.
1 kPa = 1.0
2
× 10
-2
kgf/cm
2
1 kgf/cm
2
= 98.1 kPa
Convert the units between kPa and psi as follows.
1 kPa = 1.45 × 10
- 1
psi
1 psi = 6.89 kPa
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