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Gas density monitors

SF6 gas density monitors: reliable warning against low gas quantities

Sulfur hexafluoride (SF6) is an extremely effective electrical insulator for medium- and high-voltage switchgear. For proper insulation, gas density must remain within certain levels. Furthermore, as SF6 is a potent greenhouse gas, it must not escape into the atmosphere. An SF6 gas density monitor warns operators of dropping levels that indicate contamination and/or leaks. WIKA’s SF6 gas density monitors are temperature compensated and hermetically sealed to shield measurements from atmospheric pressure fluctuations and differences in mounting level. Manufactured entirely from stainless steel for reliability and long life, they are fitted with up to three alarm contacts to provide advance warnings when pre-defined limit levels are reached.

FAQ
FAQ

What is the display accuracy of the gas density monitor?

The gas density monitor has a class accuracy of +/- 1 % at 20 °C. At -20 °C and +60 °C, the tolerance is 2.5 %. The accuracy between these temperatures can be interpolated linearly.

Are there gas density monitors with adjustable contacts?

Gas density monitors usually do not have adjustable contacts. The contacts of the gas density monitors are fixed by a weld after they have been set. This prevents any dangerous operating condition from being caused through unintentional or incorrect ...

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