In many Belgian cellars, the lowest point is below the sewer level – wastewater and rainwater must be actively pumped. The example of Pumptech demonstrates why submersible sensors have proven more reliable than floating switches.
Rainwater and Wastewater Management Below Sewer Level
Many cellars in Belgium are below sewer level. Natural drainage of wastewater isn't possible there – it must be pumped. The company Pumptech provides suitable pump systems to homeowners and building managers. Besides wastewater, rainwater is often collected in underground tanks for use in toilet flushing.
The Role of Water Level Measurement
Whether for rainwater or wastewater tanks: the water level must be reliably measured to accurately trigger the pump control. For a long time, float switches were used – but especially in wastewater operation, they proved problematic: floating particles or foam impair their function, switches can become dirty and fail. The consequence: uncontrolled water levels, overflowing tanks, or unnecessary pump activation.
Reliable Alternative Using Submersible Sensors
For over 15 years, Pumptech has been using submersible sensors for level measurement – specifically, the analog ATM.ECO/N from STS. The sensor placed at the tank bottom measures the hydrostatic pressure, which is proportional to the water level. The signals control the pumps in real time: at defined thresholds, pump 1, 2, or 3 turns on. Alerts at maximum level are also possible.
Why Choose the ATM.ECO/N
After tests with several providers, the ATM.ECO/N stood out due to:
- a completely sealed, corrosion-resistant steel membrane
- moisture filter on the cable connection to protect the measuring cell
- long service life without maintenance
- fast response time and stable level measurement
Product Note
Important: The ATM.ECO/N model has been discontinued. Modern alternatives with comparable performance are available for similar applications – we are happy to advise you on suitable products.
Conclusion
For Pumptech, switching from float switches to piezoresistive submersible sensors has clearly paid off. The precise control of pumps, high reliability, and low maintenance ensure a permanently stable operation in rainwater and wastewater tanks.
