Tsurumi Pumps were recently used in a canoe slalom event at the Tokyo Olympic Games. In total, there were 15 submersible pumps being used to pump the water and create turbulence for the event. Three of the pumps have 150kW motors and can pump 4,000 liters per second.
Sensor pumps are popular because they allow the device to control itself – if the water rises to a certain level, the unit starts up – and switches off again when the level drops. This also saves operating costs. The ram protection safeguards this function.
Tsurumi also relies on electrodes to measure the water level. This approach is potentially much more fail-safe because it does not require mechanics. Electrodes also react faster and are usually more accurate.