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Utility Gas Supply Installation, Continued

Detector Flame Fuel Supply

The FPD will need supplemental hydrogen and the FID may also need supplemental hydrogen for the

flame depending upon the type of columns used. See Technical Specifications on page

11 for

requirements for the flame fuel supply.

If your analyzer uses a hydrogen carrier, it also serves as the flame fuel for a FID or an FPD. In this case,

the flame fuel regulator may or may not be supplied.

If your analyzer uses a carrier gas other than hydrogen, the flame fuel for a FID and an FPD must come

from a hydrogen cylinder. A flame fuel regulator will be supplied.

Install the hydrogen cylinder next to the carrier supply.

Install the flame fuel supply lines using new, clean ¼” (6.35 mm) stainless steel tubing between the

hydrogen supply and the analyzer.

The average flame fuel consumption per detector is 70 SCF (1982 dm

) per month.

WARNING Always shut off the flow of gas utilities when air is not present to reduce

consumption and the possibility of flammable gas in the oven and or sample system.

FID Air Supply

If your analyzer uses a FID, the air required for the FID flame usually comes from an air treater. Refer to

Application Drawing Package for air and power connection to the air treater; Block Diagram Utility

Connections sheet. See Technical Specifications on page

11 for requirements for the air supply.

Compressed Air Supply

Air of instrument quality (clean, dry, and oil-free) is required to ensure trouble-free operation. Applicable

codes require that the compressor intake be located in a non-hazardous area, and the suction be

designed to prevent leaks which might permit hazardous gases or vapors to be drawn into the

compressor. The air must contain no more than trace amounts of any flammable gas or vapor. See

Technical Specifications on page

11 for requirements for the air supply.

WARNING If a purge gas other than air is used, precautions must be taken to monitor and

prevent oxygen depletion from occurring in the area. This is also needed when a backup other

than air is used. Depletion of oxygen can cause death to personnel in the area.

Minimum Air Pressure

The minimum air pressure required for an analyzer will depend upon the analyzer’s application. For the

specific air pressure requirements for your analyzer refer to the Application Drawing Package, the Block

Diagram Utility sheet.

Analyzer Connections

Reference the Analyzer Connections Instructions on page 30.

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Siemens GC..M.. Installationshandbuch Seite 26