NivuFlow Gauging

Van Walt’s aim is to keep flow gauging simple. To do this we now offer a flow gauging service where we will travel to your site and carry out flow gauging in your stream or pipe on your behalf. Once our site visit is complete, we will issue a full report which will include:

  • Location photos
  • A profile of the bed
  • The level of each sampled segment
  • The velocity profile over 10 sampled segments
  • The flow rate
  • The area, hydraulic radius and wetted perimeter
  • PDF and .CSV results

Package plans are available for multiple returned site visits so please contact us today to find out how we can help you.

Prices from £750.00, please call on +44 (0)1428 661 660 to discuss your application

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£750.00

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Product Details

Description

The Flow Stick is a mobile measurement system for discharge measurement in watercourses, such as rivers, streams and canals.

The compact system can be easily transported and is ready for use within moments. Convenient operation via smartphone or tablet makes measurements simple and intuitive. The system contains no wearing parts and is maintenance-free. All components are light weight and compactly attached to the holding rod, which makes handling in the water easy and safe.

The stored data can be read out directly on site via WLAN. Previous measurements can be loaded and visualised. Deviations in the measurement quality are signalled by the system and the quality indication is always stored in the data.

  • Complete detection of the profile
  • Discharge calculation method according to ISO 748:2021: Mean-Section, Mid-Section method
  • Integrated hydrostatic level measurement
  • Fully automatic calculation of the discharge volume
  • WLAN Communication
  • Browser-based operation via smartphone/tablet/laptop
  • No additional software required
  • Memory for 1400 discharge measurements
  • Note field with 300 characters
  • Self-diagnosis of sensors & measurement quality
  • Storm water runoff studies
  • Measuring flows in rivers, culverts and streams
  • Monitoring water velocity in ditches and canals
  • rrigation channel measurement & control
  • Surface water monitoring
  • Industrial outflow monitoring
Depth measurement Measurement range (pressure cell): 0...5 m
Temperature measurement Resolution 0.01°C, accuracy 0.1°C
Accuracy  < 0.5 % of full scale
Acoustic frequency 1MHz – 3MHz
Minimum water depth for accurate velocity measurement   Min. 30 mm above sensor Max. immersion depth: up to 100 cm with special accessory
Temperature measurement Resolution 0.01°C, accuracy 0.1°C
Data memory 1400 discharge measurements
Data transmission Download via WLAN
Operating temperature -30°C-+70°C
Storage temperature -30°C-+70°C
Power supply 8xAA standard or rechargeable batteries
Lifetime 12h permanent use (for operation with 2650 mAh batteries)
Protection Enclosure IP67
Protection sensor IP68
Measurement principle   Ultrasonic cross correlation (flow velocity) Hydrostatic (depth measurement)

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