Float switch WIKA Model HLS-M

Applications

• Level monitoring and level indication of liquids

• Level detection for almost all liquid media

• Pump and level control

• Alarm signals

• Dry-run and overflow protection

Special features

• Lateral installation in the tank

• Operating limits:

  • Operating temperature: T = -40 ... +120 °C

  • Operating pressure: P = 5 bar

  • Limit density: ρ ≥ 800 kg/m³

• Plastic and stainless steel versions

• Space-saving installation

• Switch consists of only one component

Description

With its compact design, the model HLS-M float switch for horizontal installation in miniature design is ideally suited for use in small tanks, for indicating minimum/maximum levels.

The float is attached to a supported, swivelling lever and moves with the level of the medium being measured. By means of a permanent magnet, when a preset switch point is reached, a reed contact (inert gas contact) is actuated.

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 function refers to a rising liquid level: Standard use as normally open contact (can be used as normally closed contact by a 180° rotation).

The float switch is simple to mount and maintenance-free, so the costs of mounting, commissioning and operation are low.