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
