Project stories from around the world

Germany – Sebalog HydroCorr – Correlating noise loggers with hydrophone sensors

We were very impressed that the Sebalog HydroCorr enabled us to locate the leak despite the very low pressure and large pipe diameter.
(Martin Grupp, Site Manager, Zweckverband Landeswasserversorgung)

Sebalog HydroCorr

Correlating noise loggers with hydrophone sensors

Description
In mid-November, flow measurements by the regional water supplier in Stuttgart revealed the likelihood of a major leak in a DN 900 grey cast iron water main. Pressure measurements were carried out along the pipeline and the location of the suspected leak was narrowed down to a section of approximately 250 metres. To find the exact position of the leak, a Sebalog HydroCorr system was used, consisting of correlating noise loggers with hydrophone sensors. Although the pressure in the pipe was only around 1.5  bar, it was possible to carry out a successful measurement and receive a definite correlation result. The following pipe excavation confirmed the correlated leak location, revealing a 5 metre-long crack in the bottom of the pipe.

Project
Leak location in a DN 900 grey cast iron water main

Quantity
1 Sebalog HydroCorr set

Period
November2013

Customer
Zweckverband Landeswasserversorgung, Stuttgart

 

Israel – Sebalog N-3 – Correlating network noise loggers

Reducing leak run-time in small, remote communities with web-based correlation technology

Sebalog N-3

Correlating network noise loggers

Description
The Sebalog N-3 fixed network of correlating noise loggers is the future standard solution for water network monitoring and remote leak pinpointing. The system is composed of Sebalog N-3 noise loggers, signal repeaters and a central communication box. Due to the transmission of acoustic recordings, the system can not only display noise levels and frequencies, but can carry out the correlation of sound recordings.

The main advantages of the Sebalog N-3 fixed network are:

  • Remote leak monitoring and pinpointing
  • Transmission of acoustic recordings for correlation
  • Advanced web-based evaluation software
  • Adaptable to existing SCADA systems
  • Cascading repeater functionality
  • Interactive pipe mapping tool

Project
Several network installations in different communities throughout Israel

Quantity
200 noise loggers

Period
2011 – ongoing

Customer 
Mey Ram, Israel

Germany – Sebalog N-3 – Correlating network noise loggers

We can transmit the data from 100 noise loggers with just two GSM boxes. That‘s great, because we therefore have minimal data transmission costs!
(Tobias Nayda, DEW21, Head of Maintenance and Inspection)

Sebalog N-3

Correlating network noise loggers

Description
The Sebalog N-3 fixed network of correlating noise loggers is the future standard solution for water network monitoring and remote leak pinpointing. The system is composed of Sebalog N-3 noise loggers, signal repeaters and a central communication box. Due to the transmission of acoustic recordings, the system can not only display noise levels and frequencies, but can carry out the correlation of sound recordings.

The main advantages of the Sebalog N-3 fixed network are:

  • Remote leak monitoring and pinpointing
  • Transmission of acoustic recordings for correlation
  • Advanced web-based evaluation software
  • Adaptable to existing SCADA systems
  • Cascading repeater functionality
  • Interactive pipe mapping tool

Project
Permanent leak monitoring of the densly populated inner district of Dortmund city

Quantity
100 noise loggers installed so far

Period
2012 – ongoing

Customer
DEW21 – Water and energie supplier of the city Dortmund

Denmark – Sebalog N-3 – Correlating network noise loggers

Here at Guldborgsund Forsyning we have chosen to implement ISO 22000 for our drinking water supplies, which is an international standard for food safety management systems. As part of the ISO 22000 process we are prioritizing the reduction of leaks, which do not only waste water, but are also a potential source of contamination. To ensure optimum drinking water safety and security, we have decided to install automatic leak detection technology in urban areas. After a thorough study of the various options we chose Sebalog N-3, because it is a very efficient leak detection system, is easy to install and will considerably help us reduce our running costs.
(Niels Rasmussen, Operational Manager/Guldborgsund Forsyning)

Sebalog N-3

Correlating network noise loggers

Project
Minimizing the running costs of one of Denmark‘s largest water suppliers

Quantity
260 noise loggers installed so far

Period
2012 – ongoing

Customer
Guldborgsund Forsyning, Denmark

Angola – Leak detection van - with incorporated office compartment and wet room

It‘s a mobile leak detection department and a must for every municipality.

Leak detection van

with incorporated office compartment and wet room

Description
When on the road, you can be sure that you have all the necessary equipment for managing and maintaining your pipe network at hand with a SebaKMT leak detection van. You can transport high-quality measuring equipment such as correlators, listening equipment, noise loggers, line location equipment, etc. quickly, effectively and correctly. All your equipment is then within easy reach, whenever it’s needed.

The van is divided into two sections. The front area accommodates the SebaKMT “Mobile Office”. This contains all the main features that you need to work efficiently and in comfort while on the road – from seating, work surfaces & a wardrobe through to drawers and cupboards. An additional battery, both modern and powerful, ensures that all your equipment has an independent power supply. In the rear of the vehicle, the so-called wet room, the emphasis is on safety and ergonomics. This section contains shelving with drawers and cupboards to store equipment and tools securely and accessibly. The shelving can be expanded to meet individual customer requirements.

Project
Network analysis and leak pinpointing in the city of Lobito, Angola

Quantity
1 van full equiped with leak detection instruments in 2009

Customer
Empresa de Águas e Saneamento do Lobito, Angola

 

India - Sebalog Dx - Flow and pressure logger with GPRS

The most reliable data logger for the remote monitoring of pressure and flow

Sebalog Dx

Flow and pressure logger with GPRS

Description
Using a Sebalog Dx data logger allows you to always remain informed about exactly what is going on in your supply network. You can record pressure and flow on up to 4 channels simultaneously, and send the data conveniently and reliably as daily updates to the control centre by GPRS. Thanks to its small size and robust housing, the Sebalog Dx can be used even under the most adverse conditions. The internal battery, which can supply the logger with power for 5 years under standard conditions, and its extremely large memory for over 1 million measurements give you all the freedom you need for your specific application. Almost all configuration of the Sebalog Dx settings can be re-programmed remotely. The logger receives the new configuration automatically during communication with GSM, making it unnecessary (to spend time and resources) to re-program the logger on site. In the event of an alarm a trigger causes the logger to temporarily transmit online data via GSM, allowing you to see what happened following the alarm event.

Project
Pressure and flow monitoring in an urban area, India

Quantity
100 data loggers

Period
2012

Customer
Larson & Toubro (L&T), India

Austria - Sebalog N-3 - Correlating network noise loggers

From 30% to 2% – a success story from Styria

Sebalog N-3

Correlating network noise loggers

Description
In 2004, the public utility company Gleisdorf employed the firstnoise level loggers in its water pipe network, thus initiating the electronic age of permanent water loss monitoring. 156 Sebalog N-3 units are currently in use in the Gleisdorf water pipe network. In the 8 years of operation, annual water loss was able to be reduced from 30% to 2%. This spares a yearly water loss of approx. 29,000 m³ which would cost around € 19,000. This reduction in the loss was possible because the noise levelloggers can detect the smallest leak immediately. By detecting these early, greater damage is prevented and thus unnecessarily long leakage durations avoided.

Project
Automated water loss management from the public utility company Gleisdorf

Quantity
Thus far 156 noise loggers have been installed.

Period
2004 – 2012

Customer
Public utility company Gleisdorf, Austria

Angola – Leak detection van - with incorporated office compartment and wet room

Let your leak detection van guide you to the leaks!

Leak detection van

With incorporated office compartment and wet room

Description
When on the road, you can be sure that you have all the necessary equipment for managing and maintaining your pipe network at hand with a SebaKMT leak detection van. You can transport high-quality measuring equipment such as correlators, listening equipment, noise loggers, line location equipment, etc. quickly, effectively and correctly. The van is divided into two sections. The front area accommodates the SebaKMT “Mobile Office”. This contains all the main features that you need to work efficiently and in comfort while on the road – from seating, work surfaces & a wardrobe through to drawers and cupboards. An additional battery, both modern and powerful, ensures that all your equipment has an independent power supply. In the rear of the vehicle, the so-called wet room, the emphasis is on safety and ergonomics. This section contains shelving with drawers and cupboards to store equipment and tools securely and accessibly.

Project
Reducing non-revenue-water in the City of Beguela (Angola) and surrounding areas. Intensive training was carried out in Angola and Germany as capacity development of the local water utility company.

Quantity
1 van full equiped with leak detection instruments in 2010

Customer
Empresa de Águas e Saneamento de Benguela,Angola

Angola – Leak detection van - with incorporated office compartment and wet room

The challenge of rebuilding the water supply network of Angola’s capital

Leak detection van

With incorporated office compartment and wet room

Description
When on the road, you can be sure that you have all the necessary equipment for managing and maintaining your pipe network at hand with a SebaKMT leak detection van. You can transport high-quality measuring equipment such as correlators, listening equipment, noise loggers, line location equipment, etc. quickly, effectively and correctly. The van is divided into two sections. The front area accommodates the SebaKMT “Mobile Office”. This contains all the main features that you need to work efficiently and in comfort while on the road – from seating, work surfaces & a wardrobe through to drawers and cupboards. An additional battery, both modern and powerful, ensures that all your equipment has an independent power supply. In the rear of the vehicle, the so-called wet room, the emphasis is on safety and ergonomics. This section contains shelving with drawers and cupboards to store equipment and tools securely and accessibly.

Project
Repairing the water supply network that was severely damaged during the long-lasting civil war. Supplying the latest technology for reducing losses in the water network. Bilateral knowledge transfer for improving the expertise of local non-revenue water engineers.

Quantity
2 water leak detection vans in 2006

Customer
Empresa Publica de Aguas de Luanda, Angola

North Iraq – Leak detection van - with incorporated office compartment and wet room

Helping to restore the water supply system in Northern Iraq

Leak detection van

With incorporated office compartment and wet room

Description
When on the road, you can be sure that you have all the necessary equipment for managing and maintaining your pipe network at hand with a SebaKMT leak detection van. You can transport high-quality measuring equipment such as correlators, listening equipment, noise loggers, line location equipment, etc. quickly, effectively and correctly. The van is divided into two sections. The front area accommodates the SebaKMT “Mobile Office”. This contains all the main features that you need to work efficiently and in comfort while on the road – from seating, work surfaces & a wardrobe through to drawers and cupboards. An additional battery, both modern and powerful, ensures that all your equipment has an independent power supply. In the rear of the vehicle, the so-called wet room, the emphasis is on safety and ergonomics. This section contains shelving with drawers and cupboards to store equipment and tools securely and accessibly.

Project
Emergency Measures Water Supply and Sanitation in North Iraq (funded by the KfW), 2012.

Quantity
2 leak detection vans with all necessary equipment for water network monitoring and leak detection. 1 service and maintenance van furnished with shelves and storage room for small construction equipment.

Customer
Development aid project funded by the KfW

Deutschland - Sebalog N-3 & Sebalog Corr - Starter set

Leakages detected with minimal expense using the starter set

Sebalog N-3 & Sebalog Corr

Noise level logger starter set and multi-correlator

Description
While searching for drinking water losses of 20.4 m³/day in the upper section of the town of Wächtersbach/Hessen, the powerful duo Sebalog N-3 (noise level logger) and Sebalog Corr (multicorrelator) turned out to be a real stroke of luck.

The noise level loggers as well as the multi-correlators were planted in the zone on valves in the drinking water pipeline for the purposes of measurement so the data recorded could be analysed the following day. By using these devices, approx. 3 km of the pipe network was able to be checked with one measurement.

Using the analysed data, the leakage was able to be clearly isolated to one pipe section. Using the correlation function of the Sebalog Corr sensors, the leak was able to be measured and located with precision.

Projekt
200 days of increased water consumption of 20.4 m³/day 850 l/h (that corresponds to a water loss of 4,080 m³ in this period)

Quantity
8 Sebalog N-3 units, 3 Sebalog Corr units

Time period
2013 – brief use

Customer
Public utility company Wächtersbach

Philippinen - Sebalog Dx

Überwachung des Wassertankstands

Sebalog Dx

Füllstands-, Durchfluss- & Drucküberwachung

Beschreibung
Mit einem Sebalog Dx Datenlogger sind Sie stets darüber informiert, was in Ihrem Versorgungsnetz vor sich geht. Sie können den Druck und den Durchfluss auf bis zu vier Kanälen gleichzeitig messen und die Daten per GPRS bequem und sicher als tägliche Updates an die Leitstelle senden. Dank seiner geringen Größe und des robusten Gehäuses kann der Sebalog Dx selbst unter den widrigsten Bedingungen eingesetzt werden. Die interne Batterie, die den Logger unter Normalbedingungen fünf Jahre mit Energie versorgt, und der extrem große Speicher für mehr als 1 Million Messungen bieten Ihnen alle Freiheiten, die Sie für Ihre spezifische Anwendung benötigen. Nahezu alle Einstellungen lassen sich per Fernprogrammierung neu konfigurieren. Der Logger empfängt die neue Konfiguration automatisch während der Kommunikation mit GSM, wodurch sich eine Neuprogrammierung des Loggers vor Ort erübrigt und damit auch der Zeit- und Ressourcenaufwand reduzieren lässt. Bei einem Alarm sorgt ein Auslöser dafür, dass der Logger vorübergehend per GSM Online-Daten überträgt, sodass Sie sehen können, was nach dem Alarmereignis geschehen ist.

Projekt
Fernüberwachung begonnen im April 2013 mit geplanter Erweiterung innerhalb des Wasserbezirks

Menge
Zwei Sets mit zwei analogen Eingangskanälen und integriertem Druckdatenlogger

Kunde
Placer Water District, Mindanao, Philippinen

 

Deutschland - Sebalog N-3 Netzwerk

Unser Ziel ist es, Wasserverluste dauerhaft in den Griff zu bekommen!
(Klaus Babilon, Bauhofleiter, Gemeinde Mömlingen)

Sebalog N-3 Netzwerk

Geräuschpegel- und Frequenzlogger mit Fernauslesung und Korrelation

Beschreibung
Die hohen Kosten einer beauftragten Dienstleistung zum Aufspüren von Leckagen im Trinkwassernetz der Gemeinde Mömlingen müssen gesenkt werden. Darüber hinaus müssen die Laufzeiten der Leckagen minimiert werden, um auch die Kosten des aufwändig aufbereiteten und kostbaren Trinkwassers im Griff zu halten. Mit diesem Ansatz wurde zur Erprobung ein Netzwerk von 25 Sebalog N-3 Loggern Anfang März 2013 installiert. Nach 7 Wochen Laufzeit und einer plötzlich auftretenden Erhöhung des Nachtverbrauchs um 120 m³/ Tag bei einer Gesamtfördermenge von 480 m³ konnten direkt 2 Leckagen über die Fernauslesung erkannt werden. Über die Korrelationsfunktion des Netzwerkes konnte sogar der defekte Hausanschluss identifiziert werden. Die Laufzeit der Leckagen betrug hier vom Auftreten bis zur Reparatur nur 7 Tage. Durch die gesammelten Erkenntnisse, wie moderne Lecküberwachung heutzutage funktionieren kann, wurde der Ausbau auf 100 fest installierte Netzwerklogger erweitert.

Projekt
Frühzeitige Erkennung auftretender Leckagen im Trinkwassernetz durch automatisierte Überwachung

Menge
100 Logger installiert (3/4 des Gesamtnetzes somit abgedeckt);
Ziel: Komplettausbau in 2014

Zeitraum
März 2013 - heute

Kunde
Gemeinde Mömlingen, Landkreis Miltenberg (Unterfranken)

Dubai - Correlux P-2 und HL 5000

Hervorragende Leistung der Experten für Leckortung in Dubai

Correlux P-2 und HL 5000

Korrelator und Bodenmikrofon für die Punktortung von Leckagen

Beschreibung
Das Team für Leckortung in Dubai hat sich dank der Geräte von SebaKMT zum Experten für die Suche von Leckagen entwickelt. Die Ortung von Lecks, die sich in unmittelbarer Nähe zueinander befinden, gestaltet sich oftmals sehr schwierig. Mithilfe des Korrelators Correlux P-2 von SebaKMT ist es dem Team jedoch gelungen, zwei benachbart liegende Leckagen zu orten. Bei den darauffolgenden Erdarbeiten wurde deutlich, dass der Korrelator die beiden Lecks exakt lokalisieren konnte. Der Korrelator Correlux P-2 wird für die Lecksuche an Trinkwasserleitungen eingesetzt. Unter Druckeinwirkung aus einem Leck austretendes Wasser erzeugt ein Geräusch, das sich in beide Richtungen der Leitung ausbreitet. Dieses Geräusch wird von zwei an der Leitung (Schieber, Hydranten) angebrachten Sensoren erfasst, verstärkt und an den Korrelator übertragen. Der Correlux P-2 vergleicht die beiden Signale (Korrelation) und berechnet auf der Grundlage der Verzögerungszeit der Signale, der Entfernung der Sensoren und der Schallgeschwindigkeit die genaue Distanz zum Leck. Mit den Hydrolux Geräten vom Typ HL 5000 können Sie Leckagen besonders schnell, einfach und zuverlässig orten. Die Geräte verwenden moderne digitale Signalprozessortechnik (DSP), um das Leckgeräusch auch bei starken Umweltgeräuschen eindeutig zu erkennen.

Projekt
Leckortung und Reparaturarbeiten in Dubai

Menge
Kompletter Satz von Instrumenten zur Leckerkennung (Korrelatoren, Bodenmikrofone, Geräuschlogger usw.)

Zeitraum
2012 – heute

Singapur - Sebalog N-3 - Netz von korrelierenden Geräuschloggern

PUB in Singapur entscheidet sich für den weltweit führenden Anbieter von festen Sensornetzwerken zur Leckortung

Sebalog N-3

Netz von korrelierenden Geräuschloggern

Beschreibung
Nach umfangreichen Feldtests hat sich das Public Utilities Board (PUB) für den Kauf von Geräuschloggern, Signalverstärkern und GSM-Boxen von SebaKMT für 40 separate fest installierte Netzwerke entschieden, die in ganz Singapur installiert werden sollen. Trotz Schachtabdeckungen von mehreren Zentimetern Dicke konnten die leistungsstarken Sebalog N3-Geräuschlogger mit Außenantenne problemlos Messdaten und Audioaufnahmen an das Verstärkernetzwerk übertragen. Eine bei der Testinstallation simulierte Leckage wurde mit der webbasierten Korrelationssoftware von SebaKMT genauestens geortet.

Das Sebalog N-3 Festnetzwerk bietet die folgenden Vorteile:

  • Fernüberwachung und Punktortung von Leckagen
  • Übertragung von akustischen Messungen zur Korrelation
  • Fortschrittliche webbasierte Auswertungssoftware
  • Anpassbar an vorhandene SCADA-Systeme
  • Funktion für Verstärker-Kaskadierung
  • Interaktives Werkzeug für die Leitungsortung

Projekt
Webbasierte Überwachung und Punktortung von Leckagen

Menge
40 separate Netzwerke

Zeitraum
Ab 2013

Kunde
PUB, Singapur