Velocity Measurement & Monitoring

   
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Trailers And Trucks For Discharge Measurement
Seba Trailers And Trucks For Discharge Measurement

Product Features
 
  • Seba Trailers And Trucks For Discharge Measurement is individual trailers and trucks for mobile discharge measurement.
  • Mech. or electr. winches with hydraulic jibs.






Horizontal-ADCP
Horizontal-ADCP

Product Features
 
  • Horizontal-ADCP is the compact H-ADCP sensor with patented broadband technology is used to measure the velocity and the discharge in rivers and channels.
  • With up to 128 measuring cells it sets standards in ADCP technology.
  • Measuring range:  1 - 300m






Ultrasonic Doppler Instrument
Unidata Ultrasonic Doppler Instrument

Product Features
 
  • For measuring the velocity and depth of water in rivers and streams, open drainage channels and large pipes.
  • Unidata Ultrasonic Doppler Instrument suitable for use in a wide range of water qualities ranging from sewerage and waste water to clean streams, potable water, and even sea water.
  • Measures forward and reverse flow conditions and may be programmed to compute Flow Rate and Total Flow in pipes and open channels.
  • Consists of a combination of an ultrasonic transducer assembly (profiled to reduce flow disturbance) and signal processing electronics.
  • Designed to be placed at (or near) the bottom of the water channel for “upward looking” measurement.
  • A single cable connects the instrument to a 12V dc power source.
  • Water velocity is measured by the ultrasonic doppler principle, which relies on suspended particles or small air bubbles in the water to reflect the ultrasonic detector signal.
  • Not operate in very clean, “de-gassed” water.
  • Water depth is gauged by a hydrostatic pressure sensor, referenced to atomospheric pressure through the vented power and signal cable.
  • Water temperature is also measured.
  • Used to adjust for the change in velocity due to speed of sound and is also available for logging.






ADCP Traveller - NIWA
ADCP Traveller - NIWA

Product Features
 
  •  ADCP Traveller - NIWA is the traveller traverses a single tight tagline, at a selectable speed, enabling efficient setup and accurate results.
  • An operator can direct the boat from the river bank using the remote control.
  • Variable speed control (0.5cm/s to 10cm/s)
  • Remote stop/start/direction control
  • Lightweight (<0.2kg, very little tagline deflection so no transducer offset change during the traverse)
  • Simple deployment (a tight tagline is the only requirement)
  • Time saving (a continuous loop pulley system does not have to be setup)
  • Simple operation (leaves the operator hands free as there is no traversing cables to operate)
  • Optional tether points (traveller centre to traveller centre, or traveller sides to boat sides)
  • High intensity LEDs mounted on the top and sides provide instant operational feedback  






NIWA Flow Station - NIWA

Product Features
 
  • NIWA Flow Station - NIWA to measure water level using a stilling well and water level encoder connected to a recording device.
  • To measure water level, which is comparatively easy, and calculate the flow from a mathematical equation.
  • User can build a "v notch' weir at the site and measure water level upstream of it.
  • The geometry of the weir defines the mathematical relationship.
  • The weir is usually made from concrete and so the equation stays accurate for the life of the weir.
  • User can choose a stable site and carry out a gauging to establish the relationship between water level and flow rate.
  • The relationship may need to be re-established regularly, but this depends on the stability of the channel cross section.






Starflow - Unidata 6526
Unidata Starflow - Unidata 6526

Product Features
 
  • A compact, easy to use system for measuring water flow in rivers, channels and pipes.
  • Cost effective way to measure water velocity, depth and derived flow in a wide range of water qualities ranging from sewerage and waste water to clean streams, potable water, and even sea water.
  • Measures forward and reverse flows and may be programmed to compute flow rate and total flow in pipes and open channels.
  • Unidata Starflow - Unidata 6526 are designed to be placed at (or near) the bottom of the water channel for upstream measurement.
  • A single cable connects the instrument to a 12V DC power source.
  • Water velocity is measured by the ultrasonic Doppler principle which relies on suspended particles or small air bubbles in the water to reflect the ultrasonic detector signal.
  • Will not operate in very clean, degassed water.
  • Water depth is gauged by a hydrostatic pressure sensor, referenced to atmospheric pressure through the vented power and signal cable. 






Current Meter
Eijkelkamp 13.12 Current Meter

Product Features
 
  • Eijkelkamp 13.12 Current Meter used for the accurate determination of the current velocity in water ways, channels, rivers and the sea.
  • Can also be applied in polluted water currents.
  • The measurements are executed with the propeller mounted on the rod(s) or connected to a cable.
  • The current velocity meter has a measuring range of 0.025 to 10 m/sec.
  • The complete set contains: a streamlined current velocity meter with a synthetic propeller, a digital counter, extension rods with graduation, cable, accessories and case.
  • The meter with the extension rods is usually applied for measurements in shallow creeks or rivers with low current velocities.
  • The synthetic propeller is fiberglass reinforced.
  • The digital counter, fitted with a carrier belt,  registers up to 10 pulses per seconds.
  • In large water ways with higher water levels and current velocities the current velocity meter can be connected to a cable with single drum winch (optional), which can be mounted either to the railing of a bridge or a boat.






Mini Current Meter
Eijkelkamp 13.13 Mini Current Meter

Product Features
 
  • Eijkelkamp 13.13 Mini Current Meter used in small ditches, with low water levels.
  • Measuring range 0.03 to 2.5 m/sec.

 







Mechanical Current Meter
Eijkelkamp 13.14 Mechanical Current Meter

Product Features
 
  • Has a measuring range of approximately 0.1 m/sec. to 7.9 m/sec.
  • Eijkelkamp 13.14 Mechanical Current Meter used for current velocity measurements in rivers, channels, sewage systems, pipes, etc.
  • Suspended from a wire the meter can be applied at great depth.
  • The meter is balanced in such a way that it will remain in a horizontal position even if the meter for instance is pulled at speed by a line.
  • The propeller is linked directly to a six digit counter that registers and visualizes every single rotation of the propeller, similar to the mileage counter in a car.
  • The counter is placed within the instrument.
  • After retrieval it is possible to read the overall number of rotations of the propeller on the counter through a clear synthetic window.
  • The meter can be mounted to a wire as well as to a telescopic rod (with an extended length of 2.4 meter).






Workhorse Rio Grande ADCP
Seba Workhorse Rio Grande ADCP

Product Features

  • The big moving boat ADCP system.
  • For water depths from 0.6m - 100m.
  • For use with trimaran boat or with fixing device for manned motor boats.