LEVEL SWITCH TYPE 86Z

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- Level switch type 89

(For high safety requirements)
Designed for constant and long-term maintenance free operation the level switch type 86Z is used to control liquid levels in containers. The unit is side mounted by flange to the container.

Operation

A float or displacer with strong weight and lift forces is fixed to the lever arm which rotates on the vertical plane. Two columns support the bearing for the lever arm. Either one or two high performance reed contacts are contained within the column and are operated simultaneously via an encapsulated permanent magnet which is fixed to the end of the lever arm. The use of two switch contacts achieves higher safety by redundancy. The wide distance between the rotating lever arm and the fixed columns, the spherical shape of the corresponding parts and the strong weight and lift forces make the unit suitable to be used for liquids containing solid particles such as metal cuttings, metal oxides, welding beads or boiler scale etc.

Advantages

• Construction suitable for high safety requirements.
• Suitable for contaminated and aggressive media.
• Model EEx de II CT6 according to ATEX
• For operating temperatures up to 350 °C and operating pressures up to 320 bar.
• Model with analogue output signal type 86afr
• Model available for use in maritime and humid tropical climates.
• Long-term continuity of spares availability.

Suitability

• Oil level control in gearboxes, automatic steel-hardening plants and large transformers.
• Level control in natural gas purifying plants.
• Automatic control of tank farms.
• Level control in heating oil boilers.
• Overflow detection in containers (with German Water Authority Approval = WHG).
• Suitable as interfacial level control