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Water

The basics of pressure tests on water pipelines – German DVGW guideline W 400-2

29. September 2020

The basics of pressure tests on water pipelines – German DVGW guideline W 400-2

The DVGW Worksheet W 400-2 explains different methods for hydrostatic testing of pipelines in more detail. In addition to the pressure loss method, there is the water loss method and the visual inspection with operating pressure. What must be taken into consideration during visual inspection with...

Reading time: 7 min

Author: Lea Schwenen

The basics of pressure tests on water pipelines

07. August 2020

The basics of pressure tests on water pipelines

This blog post on the basics of pressure testing on water pipelines is an introductory article and also suitable for students and non-experts. For experienced professionals, the next articles on successful water pressure testing will go further into detail on the various methods and their...

Reading time: 9 min

Author: Lea Schwenen

Automated leak detection

Automated leak detection

– an advanced warning system that conserves water and human resources. Climate change and shortage of qualified staff dominate the social agenda and water suppliers also struggle with these challenges: Water is precious; more so than ever during hot spells. Leaks must therefore be found...

Reading time: 11 min

Author: Clemens Fentker

Correlation in our daily work

17. October 2019

Correlation in our daily work

If there is a leak outside the measuring section, the noise must always pass through the entire measuring section. It does not matter how far outside of the measuring section the leak is. If the sound velocity V is entered correctly, the result will always be L = 0.

Reading time: 4 min

Author: Bernd Esders

Introduction – Why we write a blog

14. August 2019

Introduction – Why we write a blog

Dear colleagues and interested parties in the field of measurement technology in gas and water supply! Why do we write a blog? - We are asked the same questions in conversations time and again. Quite often we are asked for our opinion on current topics, such as new and amended regulations.

Reading time: 2 min

Author: Bernd Esders

The Principle of Correlation

05. August 2019

The Principle of Correlation

What does correlation mean and how do you find a water leak by using correlation? In water leak detection, correlation describes the measurement of time difference of sound waves via microphones. Leaking water or compressed air from a defective pipe generates a noise. The sound waves generated in...

Reading time: 3 min

Author: Lea Schwenen