Leaders in Water Leak Detection and Gas Leak Location Equipment

Welcome to SEWERIN Limited (UK) ~ Leaders in Leak Detection and Leak Location Equipment within the Water and Gas utilities.

Our expertise is the development and production of electronic measuring equipment for locating, measuring and warning of both water and gas leaks.

Sewerin’s advanced product technology combined with over 80 years of experience in the development of water and gas leak detection and locator equipment is available in the United Kingdom (UK) directly from Sewerin Limited and is ideal for the following applications:

Pipe Location	cover Location	biogas	gas survey	Tracer Gas	leak location

With a global network of subsidiaries and distribution partners, Sewerin leak location and detection equipment is available throughout the world.

Techniques for finding water leaks:

• Correlators: Two microphones are attached to a water pipe and they “listen” for the noise from the water leak. If they can both “hear” the water leak, the correlator, (combined with other data entered by the user), can calculate the position of the water leak. Correlation is best suited to larger pipe networks such as network distribution pipes.
• Electro-acoustic ground and valve microphones: Water pipes with leaks produce noise. Using electro acoustic ground microphones, or listening sticks, the user can often hear this noise and identify where the water leak is. This technique works well both indoors and outdoors.
• Tracer Gas: A tracer gas containing hydrogen and nitrogen is introduced to the water pipe with the suspected leak. The gas escapes from the leak and is detected by the Variotec 8 Tracer gas instrument. Very successful inside buildings and on customer supply pipes.
• Noise loggers are attached to the pipe by magnets and “listen” for water leak noise during the night. Noise loggers are best suited for pre-location on larger pipe networks such as network distribution pipes.

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