Guided Radar (TDR) Level Meter

OPTIFLEX 1100 C Guided Radar (TDR) Level Meter

The cost-effective TDR solution

  • Continuous level measurement of liquids and solids
  • Cost-effective 2-wire loop-powered TDR level meter
  • Intuitive 5-step quick setup procedure


This device  is a 2-wire TDR level meter for measuring distance, level, volume and mass of liquids and solids. Its simple, compact design allows service technicians to quickly assemble the probe and attach it to a threaded connection. It is an affordable solution for applications that do not require a high level of accuracy and is also an excellent alternative to traditional level controls such as RF Capacitance, conductive and DP transmitters.

The display can be ordered with the device or as an accessory. It shows measurement data on a 128 × 64 pixel screen. The configuration menu permits the device to be set up in a small number of intuitive steps.


  • 2-wire loop-powered level meter for liquids and solids
  • For general-purpose use (non-hazardous areas)
  • Measuring range up to 20 m / 65.6 ft (liquids) and 10 m / 32.8 ft (solids)
  • Easy menu navigation without opening the housing
  • Probes and process connections are made of stainless steel
  • For process temperatures up to 100°C / 212°F and pressures up to 16 barg / 232 psig
  • Display in 9 languages: including Chinese, Japanese and Russian


  • O.E.M. equipment
    e.g. as part of an automatic oil lubrication feed system

  • Machine & skid assembly
    The control of water and cleaning agents in industrial washing machines, filling machines for ink and beverages

  • Tank & silo building
    Tanks for water, oil, underground tanks, rental tanks for glycol etc.

  • Water & wastewater
    Level control in water basins, ports, locks

  • Pulp & paper
    All kinds of storage tanks and recyclying tanks

  • Agriculture
    Water control for greenhouses, livestock feed management, blood recovery in abbatoirs

  • Chemical
    Storage of plastic pellets

  • Automotive
    Paint booths, lubricant oils

  • Food & beverage
    Various storage and recycling tanks for wine, beer, fruit juice, ...


  • Level measurement in buffer tanks, collectors and simple process applications
  • Silo level monitoring in quarrying and agriculture
  • Volume measurement for storage tanks (with a 30-point strapping table)