The LMT100 is based upon the magnetostrictive principle.
- The device electronics generates a low energy current pulse at fixed intervals.
- The electrical pulses create a magnetic field which travels down a specialized wire inside the sensor tube.
- 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.
- A patented sensing element placed in the transmitter assembly converts the received mechanical torsion into an electrical return pulse.
- 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