Guidelines for Connecting Gases

Regulator Pressure Settings
Analyzer Gauge should indicate
TriStar 15 - 18 psig (103 - 124 kPag)
  Exceeding the maximum recommended pressure could cause personal injury or damage the instrument.
  These instructions refer to the installation of a gas line, regulator, and gas cylinder for each type of gas used. If expansion kits or other accessories are used in the lab, special consideration should be given to these configurations when installing the gas lines.
 

Improper handling, disposing of, or transporting potentially hazardous materials can cause serious bodily harm or damage to the instrument. Always refer to the SDS when handling hazardous materials. Safe operation and handling of the instrument, supplies, and accessories are the responsibility of the operator.

  • Place gas cylinders within 6 feet (2 m) of the gas inlets of the analyzer. Place the cylinders close enough to allow for proper connection at the analyzer inlet.

    Using gas line extenders on gas cylinders located in remote areas may degrade gas quality and reduce pressure.

    Long gas lines, such as those used with gas cylinders placed in remote areas, must be purged for an extended period of time to remove ambient gases. When possible, avoid placing gas cylinders in remote locations. It is always best to have gas cylinders located near the analyzer.

  • Use a retaining strap (or other appropriate tether) to secure the gas cylinder.
  • Always use the gas lines provided with the analyzer. It is very important that proper gas lines are used with the analyzer.
    • Do not use polymer tubing for the gas line.
    • Do not use flexible gas lines. Some flexible lines may appear to be appropriate, such as those with a herringbone covering, but the line may be coated internally with a polymer.
  • Carefully route the gas lines from the cylinder to the analyzer avoiding overlapping or entangling gas lines. This will help avoid confusion when maintenance is required.
  • Label the gas line at the analyzer inlet for proper identification and maintenance.
  • Replace gas cylinders before gas is depleted. It is best to replace a gas cylinder when the pressure reads approximately 500 psi (3500 kPa) on the high-pressure gauge. Contaminants adsorbed to the walls of the cylinder will desorb as the pressure decreases.