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Observator 100 years

Water quality sensors and data loggers for AQUON

Thursday 26 August 2021

Observator recently won a tender from AQUON for the supply of water quality sensors, including data loggers with an internal modem. As a water board laboratory, AQUON uses these measuring instruments to monitor water quality in the central and southern regions of the Netherlands. AQUON carries out these monitoring activities on behalf of nine affiliated water boards.

Because AQUON is going to carry out more and more of these monitoring activities, they need more sensors and data loggers. For this reason, AQUON – in collaboration with a few companies, including Observator Instruments – has created a framework agreement for the supply of this equipment.

The first orders within this contract have now been placed. This mainly concerns EXO multi-parameter probes from Xylem/YSI. With this probe, it is possible to measure – among others – temperature, conductivity, dissolved oxygen, pH, chlorophyll, blue-green algae and nitrate. These probes have a central wiper, which keeps all sensors clean. This makes it possible to perform long-term measurements without intermediate maintenance. The multi-parameter probes are often used in combination with Observator’s OMC-048 data logger with an internal modem. This makes it possible to immediately view the measurement data online.

In addition to the EXO probes, Observator also supplies:

  • specific turbidity sensors (NEP-5000 family);
  • spectral sensors (OPUS and NICO) for nitrate in particular;
  • and nutrient analyzers (WIZ probe) for nitrate, phosphate, ammonium, nitrogen and more.


About AQUON
AQUON specialises in water-related research and advice, and has become an innovative, full-service partner for the nine water boards in the middle and south of the Netherlands. Local municipalities, national government authorities and companies are also increasingly approaching AQUON. AQUON provides professional water research, expert information and reliable advice. AQUON’s research provides insight into water quality and forms a good basis for sustainable water management.

About Observator
As an ISO-9001-2015 certified company, we – from Observator – apply the highest quality standards to our products and systems. However, as a trendsetting developer and supplier in a wide variety of industries, we are also continuously pushing the boundaries. By developing new, innovative products and by offering uncompromised support, we are able to guarantee solutions that exceed all expectations. That’s what sets us apart.

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