Quest-Tec Solutions

- Model MTLT-5000 - Magnetostrictive / Reed Switch Transmitter

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The MTLT-5000 is based upon the magnetostrictive principle. The sensing tube contains a wire which is pulsed at fixed time intervals. The interaction of the current pulse with the magnetic field created by the magnetic float causes a torsion 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 piezo-magnetic 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 and converts it into a 4-20 mA DC output which is proportional to the level being measured.

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  • Designed to mount externally to the Magne-Trac
  • No maintenance required
  • Multidrop HART Communications
  • FM Approved Explosion Proof/IS
  • NEMA 4X/7 enclosure
  • Modular design
  • Adjustable output damping
  • Up to .001” resolution
  • 2-wire loop powered
  • RFI/EMI protection
  • Offers a 4/20 mA 2-wire loop powered circuit for continuous level measurement
  • Available in lengths up to 300 inches
  • Process temperature range: -30 to 400 degrees F.
  • The Non-Contact design ensures no wear to the sensing element, thus requiring no maintenance or recalibration

The Sensor is a network of Reed Switches and resistors contained in a heavy wall stainless steel pipe. The sensor is mounted parallel with the Chamber. As the float rises or falls it is closing Reed Switches therefore changing the resistance proportionally to the level. The Transmitter takes the change in resistance from the Sensor, conditions it and transmits a 4-20 mA 2-wire signal. The Transmitter is field rangeable to provide a full scale output over any portion of the span.

  • Microprocessor based
  • Modular design
  • High accuracy and repeatability
  • Two channel output
  • Multi-drop HART communication
  • Retrofit existing displacers
  • Stand-alone devices in tank
  • Foundation Fieldbus
  • 24 V DC, 2-wire loop (IS)
  • Explosion-proof and/or intrinsically safe (model dependent)
  • No maintenance required +2.7 degrees F (+1.5 degrees C)
  • accuracy on temperature output
  • Rigid & Flexible sensors to 480 ”
  • Removable sensing element
  • RTD option

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