Wika Model ELS Float Switch (For the Process Industry, Lateral Installation with External Chamber)

ApplicationsMounting on engines, tanks, vessels or enclosures, where, due to a lack of space, installation within them is not possibleUse for turbulent liquid levels such as in oil sumps in large engines, gearboxes etc.Pump and level control and monitoring of distinct filling levelsChemical, petrochemical industry, natural gas, offshore, shipbuilding, machine building, power generating equipment, power plantsProcess water and drinking water treatmentSpecial featuresFreely selectable switch position through fixing the float switch at the required levelLarge range of application due to the simple, proven functional principleFor harsh operating conditions, long service lifeOperating limits: – Operating temperature: T = -30 … 150 °C – Operating pressure: P = Vacuum up to 6 bar – Limit density: ρ ≥700 kg/m3DescriptionIn an external chamber (bypass chamber), a float with a permanent magnet moves on a guide tube in relation to the liquid level, following the principle of communicating vessels. Within the guide tube is fitted a reed contact (inert gas contact), which is energised, through the non-magnetic walls of the float and guide tube, by the approach of the float magnet. By using a magnet and reed contact the switching operation is non-contact, free from wear and needs no power supply. The contacts are potential-free.The switching functions always refer to a rising liquid level.The float switch is simple to mount and maintenance-free, so the costs of mounting, commissioning and operation are low.