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Home » Products » Level Measurement » Series 3411LG - BPL By-Pass Level Indicator Side-Mounted / Top-Mounted

Series 3411LG - BPL

By-Pass Level Indicator Side-Mounted / Top-Mounted

The Series 3411LG BPL By-Pass Level Indicator is a versatile product that can be mounted either on the side or top of a container. It provides reliable level indication, useful in industries such as waste management, water treatment, and oil and gas. Its clear indication makes it user-friendly and dependable for a variety of applications.



  • Enhanced protection due to metallic chamber
  • Can be used for the level measurement of the atmospheric & pressurized conditions
  • Beter reliability at high temperatures & pressure
  • Clear visibility of level for a longer duration
  • Easy to set contacts at different desired levels (optional)
  • Transmitter output 4 - 20 MA (optional)


  • Processing tanks & under ground tanks
  • Pharmaceutical & beverage plants
  • Custody transfer
  • Chemical & fertilizer plant

Working Principle & Operation

The magnetic level gauge consists of a float containing a properly centered special magnet, which has greater magnetizing force than the outside-mounted flapper magnet of the indicator system. Attached to the chamber is a series of bi-colored flappers each containing a magnet.

As the liquid rises in the tank or vessel the same level comes in the float chamber, due to buoyancy force flow starts moving within the chamber, which causes the bi-colored flapper to flip to the opposite sides or 180°, providing a visual display of the liquid and protects against the false actuation.


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Strataa Controls Inc., an ISO 9000-2015 certified company, headquartered in Edmonton, Alberta, Canada, are leading suppliers of a broad range of High-quality Field Instrumentation products. Owned and operated by professionals with decades of experience in Instrumentation and Process Controls, we specialize in providing right Instruments to best suit your specific application needs in Pressure, Temperature and Level measurement.

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