ABB – Nivel – Magnetostrictive level transmitters

ABB – Nivel – Magnetostrictive level transmitters

ABB’s K-TEK level products’ patented sensor technology allows the AT and LMT* series transmitters to be used in the most challenging of industrial level applications such as interface measurement, compressor level and separator level applications. In addition, the AT Series Level Transmitters are the only magnetostrictive level transmitters in the world to be certified for use in SIL2 and SIL3 systems per IEC61508.

Every day, we solve high accuracy and challenging applications. We can help you with yours.

ABB’s K-TEK level products’ AT and LMT magnetostrictive transmitters are used extensively around the world to provide continuous level indication and transmission of an analog and/or digital signal for monitoring or control. The unique design allows increased level sensing resolution which is more than 100 times greater than a conventional reed switch type device. The Magnetostrictive Level Transmitter versatility allows direct in-tank installation or external mounting to a magnetic level gauge. HART and FOUNDATION Fieldbus options make our magnetostrictive level transmitters easy to connect digitally to most control systems.


*Product currently available in North America only

Customer benefits:  

  • High Accuracy
  • High Reliability
  • No calibration required
  • No Maintenance

Industries served:

  • Oil and Gas
  • Petrochemical
  • Chemical
  • Power Generation
  • Water and wastewater treatment
  • Pulp and Paper
  • Biotech
  • Marine

Magnetostrictive level transmitters

Imagen Código Descripción
LMT100 The LMT Series of level transmitters 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. The LMT100 is also available with optional temperature measurement.
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 measure-
ment 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 controlFeatures:

  • 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 426.6ºC (-320 to 800ºF)
    with options
  • Field replaceable/upgradable electronics module
  • Built-in RFI/EMI filter
  • Digital communications

LMT200

The LMT200 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 measure-
ment which is proportional to the level of the float.

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
AT100 The AT100 is Based Upon the Magnetostrictive Principle. The Sensing Tube Contains a Wire, which is Pulsed at Fixed Time Intervals and the Interaction of the Current Pulse with the Magnetic Field Created by the Magnetic Float.

This 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 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 Output, which is Proportional to the Level Being Measured.

Features: 

  • SIL2 Certified IEC 61508*
  • High Accuracy: .01% of Full Scale
  • Superior Piezo Ceramic Sensor (Patent # 5,473,245)
  • Local Indication with LCD Display
  • Never Requires Re-Calibration: Set It & Forget It
  • Dual Compartment Housing with Separate Field Terminal Compartment
  • Loop Powered to 75’ (22M) Probe Length
  • Total and/or Interface Level Measurement
  • Pressure to 3000psig (207 bar), Std. 1800 psig (124.1 bar)
  • Temperature Range: -320 to 800º F (-196 to 427ºC) with options
  • Field Replaceable / Upgradable Electronics Module
  • Built In RFI / EMI Filter
  • Digital Communications
  AT200 The AT200 Magnetostrictive Level Transmitter is Used as a Direct Insert for the KM26 Magnetic Level Gauge to Create a Complete Level Measuring System for a Wide Range of Total and Interface Applications.
The AT200 Transmitter Features One Moving Part, a Float, that Provides Continuous Level Reading Via Common Industry Protocols Such as 4-20 mA, HART, Honeywell DE, Foundation Fieldbus, while Deriving its Source of Power from the Control Loop. The Transmitter Detects the Position of the Float within the Float Chamber by Using “Time of Flight” Technology to Calculate Distance. The Resulting, Non-Contact, Level Measurement is Highly Accurate.
FEATURES:

  • SIL2 Certified IEC 61508*
  • Designed to Mount Externally to K-TEK KM26 or Other Magnetic Level Gauge
  • High Accuracy: .01% of Full Scale
  • Superior Piezo Ceramic Sensor (Patent # 5,473,245)
  • Local Indication with LCD Display
  • Simple Calibration
  • Never Requires Recalibration: Set It & Forget It
  • Dual Compartment Housing with Separate Field Terminal Compartment
  • Total and/or Interface Level Measurement
  • ProcessTemperature Range -320º F to 800º F (-196 to 427ºC) with options
  • Field Replaceable Module
  • Built In RFI / EMI Filter
  • Digital Communication
  AT500 The AT500 Magnetostrictive Transmitter is based on the Same Magnetostrictive Principle as the AT100 Model. The AT500 is a Compact Magnetostrictive Liquid Level Transmitter for Direct Insertion for Total and Interface Measurement.

FEATURES:

  • Mounts from Top of Tank
  • High Resolution 4-20 mA Output
  • Simple Mounting and installation
  • Very Compact Design
  • Calibrates Without Opening Enclosure
  • Stainless Steel Enclosure
  • Custom Floats Available
  • Measurement of Total or Interface Level
   AT600 The AT600 Magnetostrictive Transmitter is based on the Same Magnetostrictive Principle as the AT100 Model. The AT600 is a Compact Magnetostrictive Liquid Level Transmitter is Designed to Mount Externally on the KM26 Magnetic Level Gauge or other Magnetic Level Gauges.

FEATURES:

  • Designed to Mount Externally to K-TEK KM26 or Other Magnetic Level Gauge
  • High Resolution 4-20 mA Output
  • Simple Mounting and installation
  • No Process Piping or Valve Required
  • Very Compact Design
  • Suitable for High Temperature Applications
  • Calibrates Without Opening Enclosure
  • Stainless Steel Enclosure