Some Typical applications include:
Sulphur Hexafluoride Used in Circuit Breakers
Sulphur hexafluoride is used as an insulating gas in circuit breakers. Excess moisture in SF6 gas causes arcing, which can trip the circuit breaker and cut off power to the distribution network.
Moisture in Natural Gas
The presence of moisture in high-pressure natural gas from a producing well causes pipelines and associated valves to freeze. High moisture content also leads to the formation of hydrates of the liquid
hydrocarbons present, thus causing further difficulties. The moisture content of the gas also adversely affects the BTU value of the gas, thus lowering the quality and value of the product.
Vacuum-Evacuation and Gas Refill in Oil Filled Transformers
Moisture is continuously monitored in the vacuum evacuation and gas refill of oil-filled transformers. The moisture content of blanketing gases, of oil-filled transformers, directly affects the dielectric properties of the oil through water vapour dissolution.
The presence of moisture in air used as a blanketing gas for sensitive instruments can cause corrosion problems, rapid changes in calibration, and loss of instrument sensitivity.
The presence of excess moisture in breathing air can lead to freezing in the pressure regulator and ice blocking the orifice, causing an interruption to the supply of air to the user.
Hydrogen Annealing Ovens
High moisture content in hydrogen gas used in annealing furnaces causes oxidation of the metal to occur, thus resulting in an undesirable surface finish on the product.