Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 40)

<1. Overview>
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IM 11B08A01-01E
If two different carrier gases are used, two gas cylinders are needed.
The gas must satisfy the following conditions. (Gas with higher purity may be required depending
on the specifi cations. See the delivery specifi cations for details.)
Purity: Measuring range from 0 to 50 ppm or more: 99.99% minimum
Moisture: 10 ppm or less; organic components: 5 ppm or less
Measuring range from 0 to less than 50 ppm: 99.999% minimum
Moisture: 5 ppm or less; organic components: 0.1 ppm 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 gas
cylinders suitable for calibration.
(4) FID/FPD combustion hydrogen gas
Hydrogen gas is necessary when either FID or FPD is used as a detector. Prepare pure
hydrogen gas in a cylinder, and keep spare cylinders at hand.
The gas must satisfy the following conditions. (Gas with higher purity may be required depending
on the specifi cations. See the delivery specifi cations for details.)
Purity: Measuring range from 0 to 50 ppm or more: 99.99% minimum
Moisture: 10 ppm or less; organic components: 5 ppm or less
Measuring range from 0 to less than 50 ppm: 99.999% minimum
Moisture: 5 ppm or less; organic components: 0.1 ppm or less
(5) Instrument air
This air is used for valve actuation and purging.
Pressure:
350 to 900 kPa
Flowrate: Type 1: 100 to 140 L/min (130 to 100 L/min for FPD)
Type 2: 150 to 210 L/min (180 to 270 L/min for FPD)
Type 3: 200 to 280 L/min
Oil: 5 ppm or less
Cleanliness: Must be free from dust, corrosive elements, and toxic elements.
(6) FID/FPD combustion air
This air is used to burn hydrogen gas in an FID or FPD.
The air must satisfy the following conditions.
Purity:
Measuring range from 0 to 50 ppm or more: moisture: 10 ppm or less; organic
components: 5 ppm or less
Measuring range from 0 to less than 50 ppm: moisture: 5 ppm or less; organic
components: 0.1 ppm or less
(7) Steam
Steam is required to steam-heat a sample. Prepare a steam source that can apply the pressure
listed in “Operation Data.”
2nd Edition : May 11, 2012-00
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