The LMT100 is based upon the magnetostrictive principle.

  1. The device electronics generates a low energy current pulse at fixed intervals.
  2. The electrical pulses create a magnetic field which travels down a specialized wire inside the sensor tube.
  3. The interaction of the magnetic field around the wire and the magnetic float causes a torsional stress wave to be induced in the wire. This torsion propagates along the wire at a known velocity, from the position of the magnetic float and toward both ends of the wire.
  4. A patented sensing element placed in the transmitter assembly converts the received mechanical torsion into an electrical return pulse.
  5. The microprocessor-based electronics measures the elapsed time between the start and return pulses (Time of Flight) and converts it into a position measurement which is proportional to the level of the float.

LMT100 is preferred for:

  • Interface Measurement
  • Exceptional performance with emulsion
  • Measurement with foam on layers fluid surface
  • Hydrocarbons and chemical control
  • High accuracy: 0.01% of full scale or + 1.27mm
  • Never requires re-calibration: set it & forget it
  • Superior Sensor (Patent #5,473,245)
  • Local indication with HMI display
  • Dual compartment housing with separate field terminal compartment
  • Loop powered to 22m (75ft) probe length
  • Total and/or interface level measurement
  • Pressure to 165.48 bar (2400 psig) Std. 124.1 bar (1800 psig)
  • Temperature range: -195.5 to 426.6°C (-320 to 800°F) with options
  • Field replaceable/upgradable electronics module
  • Built-in RFI/EMI filter
  • Digital communications
  • Two level indications
  • RTD for process temperature measurement
  • Glass viewing window
  • 316/L Stainless Steel enclosure
  • 21-point linearization table

Additional materials