Additional information
| Brand | HR Wallingford |
|---|
Wavemaker for 3D Basins
The multi-element wavemaker is used to create long and short crested waves for either deep or shallow water.
Piston type wavemakers
HR Wallingford’s piston-type multi-element wavemakers are made up from a number of self contained eight-paddle modules. This enables them to be easily installed, moved to different positions within the basin and to be extended as required.
These wavemakers are predominantly used in shallow water applications of up to 1m depth.
Hinge type wavemakers
HR Wallingford also supplies wavemakers for deep water basins and towing tanks. These hinge type paddles are again supplied in modular frames, each with four paddles that are fixed to the inside of the basin. The design of the hinge wavemaker support frame is such that it can be incorporated into basins and towing tanks with a two point fixing system that allows the modules to be removed for periodic maintenance.
Paddle drive system
Paddle width varies from 0.5-0.75m depending upon the client’s requirements. All paddles are of a wet-back design which means that there are no complicated seals between paddles or the basin walls and the floor. The paddles are mounted on linear slide assemblies that are supported from a common framework for the piston paddles. This leaves all motors, bearings and precision components well above the water level.
Custom-built and straightforward installation with on-going support and training
Each wavemaker is custom-built to meet the client’s requirements and is equipped with HR Wallingford’s Active Wave Absorption System. Installation is straightforward with HR Wallingford providing commissioning, training and on-going support.
Key features
- Generates short and long-crested random waves at normal and oblique angles using HR Merlin signal generation software
- Dynamic Wave Absorption guarantees precise control of wave conditions
- Wet-backed piston paddles ensure that performance is not limited by stroke for shallow water applications
- Stainless steel and GRP construction delivers a design life in excess of 20 years
- Digital AC servo motors provide precise control and rapid response
- Wavemakers supplied in either 4 or 8 paddle modules for ease of installation
- Easy to maintain with all bearings and precision components above water
- Hinge flap wavemakers are available for deep water basins, designed for easy removal of modules for maintenance tasks
- HR Wavemakers use HR Merlin wave generation software
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Marine, Naval, Hydrodinamic and OceanographWater Level Float Gauge – 1200 mm
The water level float gauge uses a float which moves up and down a displacement transducer to measure slowly changing water levels, typically in flumes or 3D basins. The water level is determined by accurately measuring the distance from the head of the transducer to the magnetic field produced by a magnet mounted inside the float. The advantage of this method is that there is no contact, and therefore no friction, between the float and the transducer.
The transducer consists of a 10mm diameter stainless steel tube, which contains a stretched magnetostrictive wire. The tube is welded to a stainless steel head which contains all the electronics for the transducer.
Probe length
This product has a 300mm probe. 600, 900 and 1200mm probe lengths are available from this website. Other ranges are available on request.Digital display unit option
The user can choose to purchase their water level float gauges equipped with a digital display unit, which shows pressure in a range of parameters.Key features
- Excellent linearity
- Versatile display unit
- Easy to use
- Rugged design
- Non contacting
Transducer
- Range: 300, 600, 900 and 1200mm (other lengths available on request)
- Transducer diameter: 10.5mm
- Float diameter: 51mm
- Transducer and float material: Stainless steel grade 304
- Linearity: 0.05%
- Response time: less than 1ms
- Transducer supply: 24V DC
- Transducer output: 0-10V DC
- Cable length: 5m (other lengths available on request)
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Marine, Naval, Hydrodinamic and OceanographTwin Wire Wave Probe – 300 mm
Wave probes operate by measuring the current that flows between two stainless steel wires that are immersed in water. This current is converted to an output voltage that is directly proportional to the immersed depth.
Each wave probe comprises two parallel stainless steel rods with a plastic head and foot. The head is fixed to the calibration stem and a mounting block is supplied that allows the calibration stem to be fixed to any vertical surface.
Specification
- Active length: 300 mm
- Probe type: resistive
- Other lengths available: 600 mm, 900 mm, 1200 mm
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