WEKA Magnetic Level Indicator (VLI)

Magnetic Guide Tape (patented)

The patented magnetic guide tape is integrated within the indicator rail to ensure the float bar magnet is always aligned like a compass needle to the polarized flags and switches. This ensures continuous reliability of the indicating, switching and transmitter control functions.

Temperature Stability

The magnetic materials used in the WEKA System have been selected for optimum performance even at extreme temperatures. Years of experience have proven our preconditioning of components ensuring negligible degradation of magnetic flux, thus providing the same reliable service decades later.

Magnetic Coupling

Every flag of the WEKA indication rail is equipped with ist own permanent magnet. Thus the indication flags magnetically interlock with each other and so are kept in a stable position. The patented guide tape further enhances performance through the magnetic damping effect that produces safe and reliable indication of liquid level, even under difficult applications with rapidly changing liquid levels or vibrations and shocks.

Compact Design

The low weight of the WEKA bar magnet permits the use of lightweight hermetically sealed floats. Compact in size, the WEKA floats ensure the highest possible diameter difference between float OD and tube ID - an important advantage when dirty or highly viscous liquids need to be measured. The short float design also often enables a larger indication range than competitive products.

WEKA Visual Level Indicators (VLI):
three instruments in one!

• Visual Level Indicator
• Level Controller
• Level Transmitter

Wide Application Range

Operating pressures can be from vacuum to 500bar. Float chambers are available with design pressures up to 630bar. Liquid densities as low as 0.27g/cm3 (SG 0.27) and an operational temperature range from 77 K to 673 K (-196° C to 400° C) allow use with cryogenic liquids as well as steam boilers or water hydraulics. Hermetically sealed, non-pressurized floats for condensing media are available up to 350 bar operating pressure.

Flexibility through Choice of Materials

• Standard Materials: Stainless steel 316&316L(double certified)
• Exotic materials and special alloys:
  904L (UNS N08904), 254SMO (UNS S31254) C-276 (UNS N10276), Inconel, Incoloy and others
• Coating and Lining: PTFA, PFA, Halar and others
• Any other non-magnetic material (subject to physical & chemical feasibility)