Solutions for surface water

Flow Metering for Hydrology

Our products have been used for over 50 years in the field of flow measurement in surface waters. Our many years of experience enable us to recognise hydraulic requirements and challenges at measurement places and to set up the measuring points accordingly. Due to our range of different measurement technologies in combination with sensors in various designs and numerous mounting solutions, we offer you the best possible measurement system for every measurement place.

Benefits

Many years of experience in the field of surface water, open channels and measuring in rivers
Optimal solutions for each measurement place thanks to various measurement technologies and a wide range of sensors
Permanent and mobile measurement systems
Consistent data transmission concept
Self-sufficient operation through measurement systems with solar or fuel cell supply

Mobile Measurement System for Discharge Measurement in Flowing Waters

NivuFlow Stick allows for quick and reliable flow metering in rivers, streams and channels.

The flow velocity is measured by the ultrasonic cross-correlation measurement principle. Thanks to this technology, the sensor
records velocities at different water depths with high resolution. This minimises the effort to only one measurement per
measurement vertical and still enables a highly accurate determination of the flow velocity curve.

The integrated water level
measurement simultaneously records the profile and calculates and displays the flow value directly at the measurement point.
The total flow rate is output directly after measuring the last section.

You can find more information about the NivuFlow Stick here.

Benefits

Only one measurement per measurement vertical
Complete detection of the flow profile
Measurements from a water level of 55 mm
Discharge calculation method according to ISO 748:2021
Integrated hydrostatic water level measurement
Visual indication of the flow velocity profile for plausibility verification already during the measurement
Fully automatic calculation of the discharge volume

Self-diagnostics of sensor and measurement quality
No additional software required
Output of the measurement report as PDF directly at the measurement place
Data integration as *.xml including all spot velocities in Kisters Wiski, Software-Q
Maintenance-free
Possibility of mounting on winged rod (20 mm)

Self-sufficient measurement with solar and data transmission

The NIVUS solar solutions enable permanent measuring operation at measurement places where there is no power supply available.

Our system consists of a reliable solar panel, the measurement system and buffer batteries in a ready-made system. On request, our experienced service team will carry out the installation and commissioning. Due to the adjustable cycle operation, our NivuFlow measurement systems are perfectly suited for energy-autonomous operation. In conjunction with NIVUS Connectivity, the measurement data is transmitted securely and reliably via 4G mobile communication.

Benefits

Self-sufficient measurement place operation independent of the mains supply
Automatic measurement data transmission
Ready-made solution
Maintenance work is reduced to a minimum

Consistent Communication Concept

NIVUS Connectivity is an end-to-end and consistently secure communication solution. It already includes the necessary infrastructure and the relevant components for reliable transmission of your measurement data via mobile networks.

Benefits

Very easy and quiuck set-up
Support from NIVUS across the entire solution chain (sensor - data transmission - platform)
Use of the best mobile network on site
No roaming costs and no SIM management
Continuous IT security in accordance with DWA, DVGW and BSI standards
Increased process efficiency and system availability

Continuous Measuring with Ultrasonic Transit Time Method

NivuFlow 650 offers highly accurate continuous flow measurement with the ultrasonic transit time method in several levels in rivers and channels. The system is also suitable for measurement places without power supply.

Benefits

Total flow measurement of part filled closed pipelines, open channels and rivers
Calculation of the flow profile in several levels with up to 32 measurement paths
No in situ calibration necessary
For channels and rivers up to a width of 100 m
Measurement of even very low flow velocities
Complies with ISO 6416, ISO 748
Backwater detection, bidirectional speed measurement
Crosswise arrangement of paths in case of existing cross flows
Energy-saving cycle operation for energy supply by rechargeable battery or photovoltaics
Optimal equipping of each measuring point due to different sensor shapes and sensor sizes
Installation very often possible without divers
Integrated NIVUS Connectivity

You can find more information about the NivuFlow 650 here.

Permanent and portable contactless measurements using Radar

Contactless continuous flow metering using surface radar provided by our NivuFlow 550 measurement system.

Measurement for a wide range of rivers and channels from a width of 30 cm
Connection of up to 9 flow velocity sensors for measuring very wide rivers or rivers with an inhomogeneous flow distribution
Very easy installation e.g. on bridges or cantilevers
Integrated hydraulic models for highly accurate measurement
Available as permanent and battery-operated portable version
Solar power supply possible due to low energy consumption
Integrated NIVUS Connectivity

You can find more information about the NivuFlow 550 here.

Permanent Measurement using ultrasonic Cross Correlation

NivuFlow 750 provides highly accurate continuous flow measurement. Due to the ultrasonic cross-correlation measuring principle, no sensor pairs need to be used.

Benefits

Connection of up to 9 flow velocity sensors for the measurement of very wide rivers or in case of an inhomogeneous flow distribution
Recording of the flow velocity profile in up to 32 local flow velocities
Vertical and horizontal installation possible
Measurement from top to bottom possible using float
Measurements possible even with very high suspended solids content
Backwater detection
Integrated water level measurement
Energy-saving cycle operation for energy supply by rechargeable battery or photovoltaics
Integrated NIVUS Connectivity Benefits

You can find more information about the NivuFlow 750 here.

Water Level Measurements

In order to reliably measure the water level, we have the option of using various measurement technologies. In addition to contactless measurement methods with ultrasound or radar, we also offer hydrostatic probes. Existing water level measurements can also be easily integrated. Thus, we can offer the right measurement system for every measurement situation.

You can find more information on the NivuLink Radar product page.

Your Benefits at a Glance

Specialised Products

For the different measurement tasks and conditions, we provide the appropriate measurement technology as well as the optimal sensor shape and sensor installation. All measurement systems are suitable for mains voltage or battery operation.

Comprehensive Service

Our experts take care of the installation and commissioning of the measurement and transmission technology for you. We also offer:

Competent data analysis incl. plausibility verification
Extended service options
Calibrations
Maintenance
Complete measurement place operation as a service

Consistent System

The native consistency from the sensor to the control system is characterised by easy handling and high data security. Our open systems enable the integration of external measurement technology systems as well as the connection of our measurement technology to external measurement data portals or process control systems.