Sewerin
SEWERIN, officially Hermann Sewerin GmbH, is a German engineering company specializing in professional detection and measurement technology for gas and water utilities. With decades of experience in utility diagnostics, SEWERIN develops instruments for water leak detection, gas leak detection, pipe and cable locating, and related infrastructure inspection applications.
SEWERIN's product portfolio includes the AQUAPHON® acoustic water leak detection system, SeCorr® leak correlators, SePem® noise logging systems, COMBIPHON® pipe locating technology, FERROPHON® metal pipe and cable locating systems, VARIOTEC® gas measuring instruments, EX-TEC® gas detection instruments, and DIGIPHONE® digital ground microphones.
Advanced Leak Detection and Measurement Technologies
SEWERIN develops professional instruments for detecting, locating, measuring, and documenting leaks in water and gas networks. Its technologies are designed to help utility operators and service technicians identify underground infrastructure problems efficiently and accurately.
Key solution areas include:
AQUAPHON® – electro-acoustic water leak detection technology for locating leaks in water distribution networks.
SeCorr® – leak correlation systems that calculate leak positions between measuring points.
SePem® – stationary noise logging systems for continuous or periodic monitoring of water distribution networks.
DIGIPHONE® – digital ground microphone technology for acoustic water leak detection.
VARIOTEC® – gas measuring instruments for detecting and measuring combustible gases and other gases in utility and industrial applications.
EX-TEC® – professional gas detection and measurement instruments for underground gas leak detection and network inspection.
COMBIPHON® – pipe and utility locating technology for tracing underground pipes and services.
FERROPHON® – electromagnetic locating technology for metallic pipes and cables.
Water Leak Detection and Network Monitoring
SEWERIN provides several technologies for identifying underground water leaks, from handheld acoustic detection to network-wide monitoring and correlation.
The AQUAPHON® system uses electro-acoustic technology to support professional leak detection. The system can be combined with suitable microphones and sensors to listen for leak noise transmitted through pipes and the surrounding ground.
For more advanced leak localization, SeCorr® correlation systems analyze signals recorded at multiple measurement points and calculate the probable position of a leak. This can reduce the amount of excavation required when repairing underground pipelines.
The SePem® family is designed for systematic monitoring of water networks. Noise loggers can be installed at selected points in a network and used to identify unusual acoustic patterns associated with potential leaks.
Gas Leak Detection and Measurement
SEWERIN's gas detection portfolio is designed for locating and measuring gas concentrations in utility networks, buildings, pipelines, and industrial environments.
The VARIOTEC® range provides professional gas measuring instruments for applications including gas leak detection, pipeline inspection, and concentration measurement. Depending on the configuration, instruments can support measurements for gases such as methane and other combustible or hazardous gases.
SEWERIN's EX-TEC® instruments are designed for professional gas detection and measurement applications, including underground gas leak detection and safety-related inspection work.
These technologies help technicians identify potential leaks, determine gas concentrations, and assess the condition of gas distribution infrastructure before corrective maintenance is performed.
Underground Pipe and Utility Location
Finding the position of buried infrastructure is an important part of utility maintenance and leak investigation. SEWERIN provides specialized locating technologies for tracing underground pipes and cables.
The COMBIPHON® system uses acoustic locating techniques for identifying and tracing suitable underground pipelines. FERROPHON® systems are designed for locating metallic pipes and cables using electromagnetic principles.
These technologies can help field technicians determine underground pipe routes and reduce unnecessary excavation, particularly when working on existing utility networks where accurate infrastructure information may be limited.
Designed for Professional Field Use
SEWERIN instruments are designed for technicians working in demanding outdoor and utility environments where portability, clear measurement information, and reliable operation are essential.
Important product characteristics across the range include:
Portable and ergonomic instrument designs
Digital signal processing on applicable systems
Acoustic and electro-acoustic leak detection
Correlation-based leak localization
Long-term noise monitoring
Gas concentration measurement
Underground pipe and cable locating
Application-specific sensors and accessories
Software and analysis tools for selected systems
The combination of handheld detection equipment, stationary monitoring systems, and correlation technology allows SEWERIN solutions to support different stages of utility inspection — from initial screening to precise leak localization.
Solutions for Water and Gas Utilities
SEWERIN products are particularly relevant to organizations responsible for maintaining underground water and gas infrastructure.
Typical applications include:
Municipal water distribution networks
Water utility leak detection
Underground pipeline inspection
Gas distribution networks
Gas leak detection and measurement
Pipeline maintenance
Utility construction and infrastructure mapping
Industrial gas safety
Infrastructure service and maintenance
For water networks, products such as AQUAPHON®, SeCorr®, SePem®, and DIGIPHONE® address different stages of acoustic leak detection and localization. For gas networks, VARIOTEC® and EX-TEC® provide professional gas detection and measurement capabilities.
Engineering, Training and Technical Support
SEWERIN supports its instrumentation with application-specific accessories, software, servicing, calibration, and technical training. These services help technicians obtain consistent measurements and use the equipment effectively in real-world utility environments.
Professional training is particularly important for acoustic leak detection because measurement quality depends not only on the instrument but also on correct sensor placement, signal interpretation, environmental conditions, and operator experience.
Reliable Technology for Utility Infrastructure
By combining acoustic leak detection, correlation technology, continuous noise monitoring, gas measurement, and underground utility locating, SEWERIN provides a broad portfolio of professional diagnostic instruments for water and gas infrastructure.
Products such as AQUAPHON®, SeCorr®, SePem®, VARIOTEC®, EX-TEC®, COMBIPHON®, and FERROPHON® enable utility professionals to detect leaks, locate underground services, measure gas concentrations, monitor network conditions, and support efficient maintenance operations.
Certifications
