FEATURES

• Surge tank design provides a constant mixture proportion from off to full flow.
• The hydrogen and argon are dynamically mixed which creates a steady uniform mixture. This action prevents the possibility of stratification, which can exist in some cylinder mixtures.
• Electrical circuit shuts off the hydrogen into the gas mixer if the inlet argon pressure is insufficient to create a proper mixture.
• explosionproof electrical construction for Class I, Division 2, Group B, C, D Hazardous Area.

TYPICAL MIXTURES

• 1% H₂ , 99% Ar
• 2% H₂ , 98% Ar
• 5% H₂ , 95% Ar
• 35% H₂ , 65% Ar

APPLICATIONS

The Model 8520 gas mixer is designed to mix hydrogen and argon for welding applications. These include shielding gas for plasma arc welding (PAW) and gas tungsten arc welding (GTAW). A typical example is plasma arc welding of stainless steel tubing in a tube mill.

The gas mixer has a flow rate range of 0-500 SCFH and is ideal for multiple users since the surge tank design will maintain a constant mixture proportion from off to full flow.

The gas mixer can not be used to create furnace atmospheres; these mixtures must be created by gas mixers designed with required safety controls.