Measurement solution for monitoring water abstraction wells

Application Report | Water & Wastewater

  • Energy self-sufficient flow and pressure measurement for long-term well monitoring
  • Combined solution for efficient groundwater management


The water utility company Leipziger Wasserwerke operates four large water plants in Germany that supply about 75 percent of the drinking water for the city of Leipzig and its surrounding area. Two of these water plants mainly abstract raw water from the bank filtrate of an adjacent river.

Measurement requirements

Depending on their location and integration into the hydrogeological environment, the wells are subject to an ageing process (e.g. iron ochre sedimentation). In order to anticipate this ageing process, the development of specific well yield in operation is monitored over time. Monitoring is an important control tool when planning ahead for well rehabilitation. Given the technical conditions in the water catchment galleries, only a solution that could reliably measure without a direct power supply and could be used in confined spaces was worth considering.

KROHNE Solution

KROHNE recommended the use of a combined solution made up of the WATERFLUX 3070 C water meter, the OPTIBAR LC 1010 C submersible level probe, the OPTIBAR P 1010 C pressure transmitter and the GSM/GPRS data logger KGA 42. The battery-powered WATERFLUX 3070 water meter is perfectly designed to measure in confined well shafts without inlet and outlet run. As the wells may be flooded, the IP68 rated version of the water meter has been supplied. It continuously measures the flow volume and transmits the data via its pulse output, either once every hour or once every minute. Configuration is flexible. When limit values (MIN/ MAX) are exceeded, the water meter emits an alarm which, with the help of the data logger KGA 42, is transmitted to the operator’s mobile device and into the control system. In addition, the OPTIBAR P 1010 pressure transmitter measures the negative pressure for the water delivery. The OPTIBAR LC 1010 submersible level probe uses a gauge pipe to monitor the groundwater level. This data is also transmitted to the KGA 42. The GPRS module features two analogue inputs which are used to supply the 2-wire pressure sensors and guarantee transmission

Customer benefits

The customer is able to efficiently monitor the wells on an ongoing basis with the help of this solution combining water meters and pressure sensors. They are now able to better predict the effects of ageing than in the past, making it easier to plan for well rehabilitation in a timely manner. The KROHNE solution satisfies the increasing customer demand for big data. Water withdrawal is more reliably secured and the entire system can be operated as cost efficiently as possible. As a full-service provider for the water and wastewater industry, KROHNE was able to supply the entire solution.

Products used


Electromagnetic water meter for district metering of potable water and custody transfer (CT) measurement

  • Battery- or mains powered, with battery backup option (incl. Modbus)
  • Integrated temperature and pressure measurement for leak monitoring
  • CT: MI-001, OIML R49 up to DN600 / 24", no inlet/outlet runs needed
  • Burial installation possible (IP68)

KGA 42

GPRS data logger

  • Modbus and 1 analogue or 4 digital and 2 analogue inputs
  • Mobile communication via 2G, 3G
  • Battery powered, in waterproof housing (IP68)
  • Server-based data storage and monitoring


Pressure transmitter for basic pressure and level applications

  • Ultra-compact design with recessed stainless steel diaphragm
  • Up to 600 bar / 8700 psi
  • Thread: ¼, ½ NPT (male); G¼, G½ (male)
  • 2-wire 4…20 mA


Submersible level probe for water and wastewater applications

  • For continuous hydrostatic level measurement in basins and wells
  • With corrosion-resistant ceramic measuring cell
  • Level (water): 1…100 m / 3.3…328 ft; Pressure: 0.1…10 bar / 1.45…145 psi
  • 2-wire, 1 x 4…20 mA, HART®

Related solutions

Remote monitoring of water wells without power supply

Battery-powered measurement solution for water abstraction

  • Energy self-sufficient flow, pressure and hydrostatic level measurement with remote data transfer
  • Data logging and wireless communication via GSM/GPRS
  • Combined solution for an efficient groundwater management