Waste water fill level monitoring: Modernisation of measuring and control technology in waste water companies
With regard to measuring and control technology, municipal waste water companies are often confronted with the challenge of having ageing technology which is no longer operating reliably. In some cases, the systems that are used are no longer available or are also technically outdated.
APPLICATION
In the market town of Thierstein, increasing numbers of fault reports were being received from the waste water shafts because the pump controller was no longer operating reliably. One of the consequences thereof were shafts which had become full because their waste water mixture was no longer being pumped out at the predefined filling level.
The cause of this was the use of outdated measuring technology in the form of a bubbling through measuring system. In view of the increasingly problematic system situation, the persons in charge turned to BD|SENSORS.
Following an on-site visit, the technical sales department suggested using a hydrostatic fill level probe, in conjunction with a multifunctional process display.
IMPLEMENTATION
The new measuring technology is based on the LMK 382 fill level probe and the CIT 400 process display.
Because of its design, the probe is ideal for measuring waste water, since it has a stainless steel housing and a robust ceramic sensor.
In order to maintain the existing functionality of the system in Thierstein the CIT 400 was used, which not only displays the recorded data but also acts as an important control element.
The conversion of the system, including parametrisation and testing, took about two hours.
A detailed project description can be found here:
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