Learning About DGA Extraction Methods

When it comes to dissolved gas analysis, online monitoring is a cost-effective method but requires a robust method of gas extraction in order to accurately detect and measure present gases. The two primary methods for extracting the gases found in transformer insulating oil are vacuum or membrane based.

Vacuum extraction requires using a large vacuum pump which runs the risk of pulling oil into the gas analysis chamber. It also requires maintenance on pumps (that will someday need replacement). With membrane-based methods such as the “spaghetti tube” or flat sheet, there is a risk of breaking the membrane. Additional supports can be added to the flat sheet membrane, but there is additional risk of impairing the gas transfer properties.

LumaSense’s Exclusive Membrane Design

Our in-house engineering staff, alongside outside PhD experts in polymer mechanics, developed an innovative approach using a composite. The composite membrane is capable of withstanding changing oil pressures (and avoiding breakage) while still maintaining excellent gas transfer properties. Extensive testing is conducted on each membrane to ensure it upholds to the standards needed to be used in our SmartDGA solution.

Watch this video to learn about the types of gas extraction as well as the testing of our composite membrane technology:

Learn more about LumaSense’s DGA solution at www.smartdga.com and at upcoming tradeshows: International Conference of Doble Clients (April 8-13, Booth #110), TechCon Australia (April 16-18, Booth #10), IEEE PES T & D (April 16-19, Booth #2274), and TechCon SE Asia (April 23-25, Booth #7). We’ll have experts on hand to answer questions about DGA and other energy related solutions.

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