Current Meters and Open Channel Meters

Current Meters & Open Channel Meters

 

Current Meters and Open Channel Meters have been a speciality of Valeport's since the company was first formed in 1969. The company started making instruments for measuring the speed of the water in London's River Thames,  since then our product range has grown, but our expertise in current flow measurement remains.

Whichever type of instrument your require, whether it's the traditional impeller mechanism, or the high accuracy electromagnetic type, Valeport can offer a solution. Configurations are available that are suitable for use in a wide variety of applications, from hand held measurements in the smallest streams, through modelling experiments in the laboratory, to self-contained instruments for navigable rivers, estuaries, ROVs and the deep ocean.

Our impeller instruments use the simple premise of measuring the speed of rotation of a helix in the water. PTFE bearings eliminate the need for specialised lubricants and the magnetic contact closure minimises the moving parts in the system - this also allows the sensor itself to be remote from the measuring electronics (ideal in deep water applications).

The electromagnetic sensors use the Faraday Principle to measure the water speed. As a conductor (water) moves through an electromagnetic field (generated by the sensor), it generates a voltage that is measured by the sensor electrodes. Modern day signal conditioning electronics and filtering techniques allow highly accurate measurements to be made, and there is a choice of sensor shapes and sizes to suit the application. The solid state sensors and standard titanium / polyurethane construction provide excellent corrosion resistance, and depth ratings up to 5000m.

Contact our Sales team to discuss your Current Meter requirements, and decide on the right instrument for the job.

   
 
Model 106 Lightweight Current Meter
A low cost, lightweight alternative to larger flow meters, ideal for use in applications where the superior durability and depth rating of Valeport's larger meters is not necessary. Utilising the standard Valeport 125mm diameter impeller, the Model 106 features speed and direction parameters as standard, with further options of temperature and depth. Data (logged or real time) is compatible with Valeport's DataLog™ software. The instrument is manufactured from titanium and polymers, giving excellent resistance to corrosion, whilst maintaining a small size and low weight. These features make the Model 106 the ideal instrument for coastal and estuarine applications, and other light duty survey work. More Info
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Software, Manuals and FAQs
 
 
Model 803 ROV Electromagnetic Current Meter
The Model 803 is designed specifically for use on ROVs and other underwater vehicles, providing real time relative water velocity information for pilots. It may be fitted to ROVs to provide actual through the water speeds, or fitted to Tether Management Systems to give measurement of local flow conditions. Measurements are updated every second and the ROVLog™ software provides a graphic and data display, and enables data to be logged to disk. More Info
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Model 001 & 002 Open Channel Flow Meters
The Valeport ‘Braystoke’ Model 001 and Model 002 flow meters provide a cost effective and reliable method of monitoring flow in a variety of environments, including salt, fresh and effluent water, from shallow streams to tidal waterways. The meters benefit from the design of the impeller bearings, which give low threshold velocity and consistent performance. Their ease of operation make the 001 and 002 ideal for field study use and an invaluable tool for hydrometric work. Available as either a wading or suspension set, all systems are supplied with the Model 0012B real time control display unit. More Info
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Model 108 MkIII Direct Reading Current Meter
The Model 108 MkIII is the third generation of the successful Valeport 108 direct reading current meter, and has been developed to meet the needs of oceanographers, hydrographers and surveyors. Speed and Direction sensors are fitted as standard, with optional Conductivity, Temperature and Depth sensors. Full control and set up of the 108 MkIII and viewing of data is achieved directly via the customer's PC with Valeport's DataLog™ software or the Model 8008 Control Display Unit. More Info
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Model 308 Self Recording Current Meter
The Model 308 has been developed using proven industry standard sensors to meet the needs of oceanographers, hydrographers and surveyors who require an accurate current meter with flexibility of configuration and large memory capacity, which can output data directly to a PC and can be used in both self recording and direct reading modes with a variety of cables. All data is compatible with Valeport's DataLog™ software. More Info
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Model 802 2 Axis Electromagnetic Current Meter
The Model 802 is the very latest in Valeport's electromagnetic flow sensing technology, developed over many years from the original IOS design. State of the art electronics design ensures low power operation, yet maintaining low noise and high stability. A range of sensor heads and electronics packages mean that the Model 802 can be used in a wide variety of real time applications, or can easily be interfaced to customers' existing systems to provide a reliable, accurate current meter. More Info
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MIDAS ECM Self Recording Electromagnetic Current Meter
The MIDAS ECM is a highly versatile point current meter, designed with durability and ease of deployment in mind. Valeport’s latest electronics architecture allows multiple additional sensors, and a variety of communications options, making it one of the few multiparameter current meters that allows real time operations over several thousand metres of cable, as well autonomous deployments. A choice of titanium or acetal housing gives depth rating up to 5000m. More Info
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Model 801 Electromagnetic Open Channel Flow Meter
This small solid-state sensor has been designed specifically for use in open channels where fouling by weed or sewage can be a problem. Valeport's experience in electromagnetic technology has ensured that the Model 801 is a high precision instrument which can be relied upon to give accurate readings (±0.5% of reading plus zero stability) over a wide flow range (±5 m/sec) in only 5cm of water. The control display unit provides a choice of averaging modes, standard deviation of the data, and an optional logging facility. More Info
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EchoSounders and Bathymetry Instruments from Valeport CTD & Multiparameter Instruments from Valeport Current Meters from Valeport Ocean Engineering Equipment from Valeport Sound Velocity Instruments from Valeport Tide Gauges from Valeport Wave Recorders from Valeport

 
 

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