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Products

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Solutions

About us

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700

1450

2200

Vislift

The primary function of the Vislift is to facilitate fish migration. The design is based on proven insights, but thanks to the flow control and round shape, it has a more favorable flow pattern. The Vislift also generates relevant data from the passing fish and water parameters.

Proven effective for almost all fish species

Based on real-time data, it can be demonstrated that the Vislift is effective for almost all fish species.

24/7 real-time data of fish and water

The built-in sensors monitor passing fish on quantity and species, and the water on water levels, water temperature, flow rate, pollution and blockages. Ecologists, water and level managers gain more insight into fish migration and the parameters of the water.

Automatic water management

Fish species migrate at different times under different conditions, with flow velocity in the fish passage being the most important parameter. The Vislift has a flow technique that controls the attraction flow rate of the fish passage.

Self-cleaning

The Vislift is self-cleaning: the device is periodically rinsed. The built-in sensors also detect blockages. When the cleaning cycle does not yield sufficient results, this is recognized and communicated to the user.

Plug-and-play in 48 hours

The Vislift is compact, structurally strong and almost universally applicable due to its patented round shape. Soil investigation and structural calculations are less relevant. This makes the installation of the Vislift many times more efficient and faster than traditional solutions. The Vislift can be installed and reinstalled at any location within 48 hours.

Also for polder - basin migration

The fish passage can be applied everywhere; even in places with little space and even for polder boezem migration. For this situation, a Vislift UP can be used.

24/7 Remote functionality

The fish passage can open and close

Adjustable pilot flow rate

Adjustable water saving in dry periods

Periodic cleaning cycle

Water parameters 24/7

  • Water levels

  • Flow rate

  • Temperature (°C)

Fish migration measurements 24/7

  • Fish movements

  • Fish species

Hydrological and biological conditions

The unique shape of the basins, the dimensions of the swim gates, and the spacious central rest chamber ensure that the energy dissipation remains below 100 W/m3. This energy dissipation mainly occurs next to the swimming lines, allowing a wide variety of fish species to use the Vislift to swim past a barrier.


The processing flow rate varies from 25 to 45 l/s and can be expanded with an internal bypass that increases the attraction flow rate to 70 l/s. If the waterway is larger, the Vislift is equipped with an external bypass, increasing the detectability of the attraction flow.


In extremely dry periods, the water-saving function can reduce the minimal flow rate (per 24 hours) by allowing the Vislift to operate for only a few hours per day.


The Vislift is suitable for almost all fish species found in the Netherlands. The attraction flow rate within the fish passage is adjustable, self-regulating, and can be tailored to the migrating fish species' season and the fluctuating water level. This ultimately determines the migration efficiency.

Vislift 700

Vislift for weir migration maximum head 700 mm

Specifications

Volume of each basin

Ranging from 500 liters to 600 liters

Volume of resting chamber

Capacity 1500 liters

Connected load

1FN/6A, equipped with automatic circuit breaker (if automated version)

Monitoring wells

2 pieces (diameter 160mm) for level sensors and water quality sensor

Basin connecting doors

200(W) x 300(H) mm

Maintenance cover

Provides access to the inlet tube through the settling chamber

Sparing fishcounter

Preparation in the rest room for optional fishcounter assembly

Automatic

cleaning system

Weekly program to flush the Vislift (if automated version)

Fish counter with camera

Digital camera with lighting in waterproof housing equipped with automatic clean cycle (if automated version)

Waterparameters

For continuous measurement of water parameters:


  • Temperature

  • Water levels

  • Flow rate

Pilot current

25 to 45 l/sec, with internal bypass up to 70 l/sec. Optional external bypass for higher required locator current flow rates

Vislift 1450

Vislift for weir migration max head 1450 mm

Specifications

Volume of each basin

Ranging from 500 liters to 600 liters

Volume of resting chamber

2 pieces, with a capacity of 1500 liters

Connected load

1FN/6A, equipped with automatic circuit breaker (if automated version)

Monitoring wells

2 pieces (diameter 160mm) for level sensors and water quality sensor

Basin connecting doors

200(W) x 300(H) mm

Maintenance cover

Provides access to the inlet tube through the settling chamber

Sparing fishcounter

Preparation in the rest room for optional fishcounter assembly

Automatic

cleaning system

Weekly program to flush the Vislift (if automated version)

Fish counter with camera

Digital camera with lighting in waterproof housing equipped with automatic clean cycle (if automated version)

Waterparameters

For continuous measurement of water parameters:


  • Temperature

  • Water levels

  • Flow rate

Pilot current

25 to 45 l/sec, with internal bypass up to 70 l/sec. Optional external bypass for higher required locator current flow rates

Vislift 2200

Vislift for weir migration max drop 2200 mm

Specifications

Volume of each basin

Ranging from 500 liters to 600 liters

Volume of resting chamber

3 pieces, with a capacity of 1500 liters

Connected load

1FN/6A, equipped with automatic circuit breaker (if automated version)

Monitoring wells

2 pieces (diameter 160mm) for level sensors and water quality sensor

Basin connecting doors

200(W) x 300(H) mm

Maintenance cover

Provides access to the inlet tube through the settling chamber

Sparing fishcounter

Preparation in the rest room for optional fishcounter assembly

Automatic

cleaning system

Weekly program to flush the Vislift (if automated version)

Fish counter with camera

Digital camera with lighting in waterproof housing equipped with automatic clean cycle (if automated version)

Waterparameters

For continuous measurement of water parameters:


  • Temperature

  • Water levels

  • Flow rate

Pilot current

25 to 45 l/sec, with internal bypass up to 70 l/sec. Optional external bypass for higher required locator current flow rates

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