ABB Magnetostrictive Level Transmitter LMT200

Magnetostrictive Level Transmitter LMT200 is a modular range of field mounted, advanced microprocessor-based electronic transmitters, utilizing multiple sensor technologies. Accurate and reliable measurement of liquid level and interface are provided in even the most difficult and hazardous industrial environments.

High accuracy non-intrusive liquid level and interface level detection

The device electronics generates a low energy current pulse at fixed intervals. The electrical pulses create a magnetic field that 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. Magnetostrictive Level Transmitter LMT200 measures the elapsed time between the start and return pulses (Time of Flight) and converts it into a position measurement that is proportional to the level of the float.

float is precisely engineered to customer application, ensuring optimal accuracy and performance. Precisely spaced magnets create a 360° magnetic field coverage, safeguarding level transmitter and gauge performance, even the most challenging applications. Several materials of construction available including titanium, Monel®, Hastelloy® C, stainless steel, and plastics. Tefzel®, Halar®, TEFLON® S protective coatings are also available. Process pressures to 344 bar (5000 PSI) to full vacuum.

Magnetostrictive Level Transmitter LMT200 Features

• • Calibrated from the factory
  • High Accuracy: .01% of Full Scale or +/- 1.27mm
  • Never Requires Re-Calibration: Set It & Forget It
  • Easy setup with waveform display
  • Not affected by agitation, foam or emulsion layers
  • No oscilloscope required
  • Designed to Mount Externally to K-TEK KM26 or other
    Magnetic Level Gauge
  • Superior Sensor (Patent #5,473,245)
  • Local Indication with HMI Display
  • Dual Compartment Housing with Separate Field Terminal
    Compartment
  • Loop Powered to 15.24m (50ft) Probe Length
  • Total and/or Interface Level Measurement
  • Temperature Range: -195.5 to 426.6ºC (-320 to 800ºF)
    with options
  • Field Replaceable / Upgradable Electronics Module
  • Built-in RFI / EMI Filter
  • Digital Communications
  • Online Self-verification

Options

• Two Level Indications
• Glass Viewing Window
• 316 Stainless Steel Enclosure
• Built-in surge protection

Specifications | Electronic Transmitter

• Material:
  Standard: 316/L Stainless Steel
  Options: Alloy 20, Hastelloy® C-276, FEP-TEFLON® jacketed, electropolished 316/316L Stainless Steel, others on request
• Standard probe length: 304.8mm to 15.24 m (1 to 50 ft); 90-degree probes (SEH Option) 304.8mm to 7.62m (1 to 25 ft)
• Probe length tolerance:
  Standard/Options: ± 3.2mm (0.125in) up to 3.0m (10ft); +/- 6.4mm (0.25in) up to 6.0m (20ft);
  ± 9.0mm (0.35in) up to 9.0m (29.5ft); +/- 25.4mm (1.0in) up to 15.24m (50ft)
• Mounting:
  Stainless Steel Clamps for KM26 Magnetic Level Gauge Chamber Included; Optional Vibration Isolation Mounts

HMI indicator (option)
• Display of the waveform for device performance
confirmation
• Display of the current level as well as interface or the temperature of the measuring medium (optional)
• Application–specific visualizations which the user can
select. Four operator pages can be configured to display
multiple values in parallel
• Plain text fault diagnostics in conformance to NE107
• Menu–guided parameter settings with four buttons
• ‘Easy set–up’ function for fast commissioning
• Parameter settings of the device through the front glass
with the housing closed
• During ongoing operation, the HMI indicator can be
connected or disconnected and therefore also used as a
configuration tool for other devices