Guidelines For Connecting Gases - Micromeritics ACCUPYC II 1345 Operator's Manual

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UIDELINES FOR
Place gas cylinders within 6 feet (2 m) of the gas inlets of the analyzer. Using gas line extenders
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on gas cylinders located in remote areas may degrade gas quality and reduce pressure. Gas lines
are typically five to six feet long. Place the cylinders close enough to allow for proper connection at
the analyzer inlet.
Use a retaining strap (or other appropriate tether) to secure the gas cylinder.
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Always use the gas lines provided with the analyzer. It is very important that proper gas lines are
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used with the analyzer.
Do not use polymer tubing for the gas line.
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Do not use flexible gas lines. Some flexible lines may appear to be appropriate, such as those
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with a herringbone covering, but the line may be coated internally with a polymer.
Long gas lines, such as those used with gas cylinders placed in remote areas, must be evacuated
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for an extended period of time to remove ambient gases. When possible, avoid placing gas cyl-
inders in remote locations. It is always best to have gas cylinders located near the analyzer.
Carefully route the gas lines from the cylinder to the analyzer avoiding overlapping or entangling
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gas lines. This will help avoid confusion when maintenance is required.
Label the gas line at the analyzer inlet for proper identification and maintenance.
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Replace gas cylinders before gas is depleted. It is best to replace a gas cylinder when the pres-
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sure reads approximately 500 psi (3500 kPa) on the high pressure gauge. Contaminants
absorbed to the walls of the cylinder will desorb as the pressure decreases.
Ensure the gas cylinder is closed before connecting to the analyzer.
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AccuPyc II 1345 Operator Manual
134-42851-01 (Rev -) — Not Released
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ONNECTING ASES

Guidelines for Connecting Gases

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