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Guided radar (TDR) level transmitter for advanced liquid applications

  • Continuous level and interface measurement in high process or storage tanks, reactors and pressure vessels
  • Extensive choice of probes for harsh process conditions
  • Measuring range: 0.3…60 m / 1...197 ft
  • -50…+250°C / -58…+482°F; -1…100 barg / -14.5…1450 psig
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The OPTIFLEX 7200 is a 2-wire guided radar level transmitter based on the Time Domain Reflectometry (TDR) technology. With its large choice of probe types and materials, the level transmitter is the high-end guided radar for level and interface measurement in the chemical or oil and gas industries. It is suitable for storage or process tanks up to 60 m / 196.85 ft, containing all kind of liquids – from hydrocarbons like slop oil or benzene to solvents and acids to cooling water or condensate. The OPTIFLEX 7200 can be used at extended temperature and pressure conditions. It also has a patented "Dynamic Gas-phase Compensation (DGC)" mode that allows it to measure accurately and without increased blocking distance in processes where the composition of the gas above the liquid can change rapidly. Various converter and electronic versions like a remote converter or a sensor extension facilitate the access to the device. The level transmitter has approvals for use in hazardous areas.

Отличительные особенности прибора

  • Extensive choice of probes for all applications with ±2 mm / 0.08” accuracy:
    • Ø42 mm / 1.65" coaxial probe made of 316L or HC22
    • Fully TFM-T62 PTFE-coated rod
    • Special materials available on request e.g. Monel®, tantalum, titanium, duplex
  • Patented Dynamic Gas-phase Compensation (DGC) without increased blocking distance
  • Various converter and electronic versions to facilitate access to the device:
    • Remote version up to 100 m / 328.08 ft
    • Sensor extension up to 15 m / 49.21 ft
  • Horizontal or vertical housing to suit every installation
  • Converter is rotatable and removable under process conditions and compatible with all process connections from previous KROHNE TDR models
  • Weather protection - protects the converter in extreme weather events
  • Stainless steel housing for corrosive environment
  • NACE design (MR 0175, MR 0103, ISO 15156)
  • SIL 2/3 (in preparation)

Типичные применения


  • Level and interface measurement of liquids in storage and process applications
  • Reversed interface measurement (e.g. water / CS2)
  • Installation on magnetic level indicators (MLI) or in bypass chambers

Chemical and petrochemical industry

  • Ethylene, propylene, additives, corrosion inhibitors, butadiene
  • Solvents, alcohols, acids, bases, ammonia
  • Benzene, hydraulic oil, fuels, biodiesel
  • Foaming agents
  • Level control on CO2 skids

Oil and gas industry

  • Slop oil, biodiesel, benzene, fuels, lubricant oil, various other hydrocarbons
  • Liquefied gases, condensates

Power generation

  • Hydraulic oil, lubricant oil
  • Fuel control of emergency generators
  • Cooling water, condensates
  • Lime milk

Metals industry, minerals and mining industry

  • Water tar mixtures


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