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WIKA

ELS Float Switch

The WIKA ELS float switch is a unique float switch due to its functioning. By using a magnet and reed contact, the switching operation is non-contact, free from wear, and needs no power supply.

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External chamber (model A, B, S) Aluminium AlMg5, Red bronze Rg5, Stainless Steel
Electrical connection Connection housing, aluminium 64 x 58 x 34 mm
Max. operating pressure Depending on model (see datasheet)
Guide tube Material Stainless steel 1.4571 Diameter: 12 mm
Temperature range -30...150°C
Switching function Change-over Switch position fixed (centred, see drawing)
Max. number of contacts 1 change-over
Switching power, change-over AC ≤ 230 V; 40 VA; 1 A DC ≤ 230 V; 20 W; 0.5 A
Mounting position Vertical ±30°
Ingress protection IP65 per IEC/EN 60529

The WIKA ELS float switch is a unique float switch due to its functioning. In an external chamber (bypass chamber), afloat with a permanent magnet moves on a guide tube in relation to the liquid level, following the principle of communicating vessels. Within the guide, the 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 connections of the level switch are potential-free. The switching functions always refer to a rising liquid level. The level switch is simple to mount and maintenance-free, so the costs of mounting, commissioning and operation are low.

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