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

Description

In 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.

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Applications

  • Mounting on engines, tanks, vessels or enclosures, where, due to a lack of space, installation within them is not possible
  • Use for turbulent liquid levels such as in oil sumps in large engines, gearboxes etc.
  • Pump and level control and monitoring of distinct filling levels
  • Chemical, petrochemical industry, natural gas, offshore, shipbuilding, machine building, power generating equipment, power plants
  • Process water and drinking water treatment

Special features

    • Freely selectable switch position through fixing the float switch at the required level
    • Large range of application due to the simple, proven functional principle
    • For harsh operating conditions, long service life
    • Operating limits:
      – Operating temperature: T = -30 … +150 °C
      – Operating pressure: P = Vacuum up to 6 bar
      – Limit density: ρ ≥700 kg/m3

Description

In 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.

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