What provides multiple sensing points since most of refrigerant is lost due to a large number of small leaks?

• A. Purge lines
• B. Primary sampling manifold
• C. Spur kits
• D. Filter assemblies

Answer: (C)

When leaks are numerous and tiny, you need many sensing points along the system to catch them. Spur kits provide just that by adding multiple taps off the main line, giving several places to connect sensors or sniffing equipment. This distributes detection points across the network, increasing the chance of spotting small leaks and helping to pinpoint their location more quickly by isolating sections as needed. Purge lines aren’t about locating leaks, and a primary sampling manifold, while it can access multiple points, is mainly for collecting samples rather than providing a broad network of sensing points during leak testing. Filter assemblies don’t add sensing locations. So spur kits best fit the need for widespread sensing when leaks are many and small.