Forbes Marshall - Trusted Partners in Steam Engineering & Control Instrumentation
Forbes Marshall - Trusted Partners in Steam Engineering & Control Instrumentation
This is a product of Krohne Marshall. Krohne Marshall's range of products is available for India and Indian subcontinent only. Krohne Marshall is a joint venture between Forbes Marshall, India and Krohne, Germany.

OPTIWAVE 3500 C

The OPTIWAVE 3500 C is an 80 GHz FMCW radar level transmitter meticulously engineered for liquids with stringent hygienic requirements. Its unique value proposition lies in its flush-mounted PEEK Lens antenna, which prevents tank intrusion, eliminates dead zones, and is virtually insensitive to deposits. Operating efficiently in high, narrow tanks fitted with internal obstructions like agitators or heating coils, it can measure through non-conductive tank roofs such as plastic or glass. It provides continuous non-contact level, volume, and mass measurement.

Key Applications of OPTIWAVE 3500 C:

  • Raw milk, cheese vats, and dairy storage vessels.
  • High-viscosity chocolate, syrup, and confectionery mixing tanks with active agitation.
  • Biopharmaceutical reactors, vaccine intermediate holding tanks, and purified water systems.
  • Brewery fermentation vessels, fruit juice storage, and spirit distillation units.
  • Hygienic CIP chemical dosing tanks containing acid and caustic solutions.
  • 80 GHz FMCW high-frequency radar signal with dynamic reflection processing.
  • Flush-mounted PEEK lens antenna eliminating tank intrusion and product buildup areas.
  • Narrow 8° beam angle (DN40 / 1½″ antenna size) avoiding signal interference from tank internals.
  • Tank Bottom Management (TBM) software algorithms for precise empty-tank signal filtering.
  • Backlit LCD screen with a 4-button optical keypad operable via magnetic pen without opening the housing cover.
  • Digital communication protocols including 4–20 mA HART 7, FOUNDATION Fieldbus, and PROFIBUS PA.

Variants

OPTIWAVE 3500 with DN25 / 1″ PEEK Lens Antenna

Compact variant fitted with a 1″ hygienic clamp connection, optimized for small, narrow vessels and restricted mounting nozzles.

OPTIWAVE 3500 with DN40 / 1½″ PEEK Lens Antenna & NEUMO BioControl® Connection

Extended variant featuring an 8° beam angle engineered for pressurized reactors adhering to biopharmaceutical fitting standards.

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