Position transducers: magnetostrictives

02 sensors

Contactless Absolute Linear Transducers represent an advance over linear displacement transmitters based on potentiometric technology, and offer higher performance for increasingly complex

Profile design

Rod design

Accessories for magnetostrictives

Main features & overview

11 mk4s

Overview

Contactless magnetostrictive linear position transducer with RS422-SSI digital output interface.

The absence of electrical contact on the cursor eliminates all wear and guarantees almost unlimited life.

Compact size for simple installation.

Full protection against outside agents for use in harsh environments with high contamination and presence of dust.

Excellent linearity, repeatability, resistance to mechanical vibrations and shocks.

Description

  • Optimised mechanical structure
  • Strokes from 50 to 4000 mm
  • Fast installation by mean of steel brackets
  • Sliding or floating magnetic cursor
  • Synchronous Serial Interface direct to controllers
  • Output data resolution available from 1 to 40 μm
  • Data format: binary or Gray code; incremental/decremental
  • Power supply 10...32 Vdc
  • Resistance to vibration (DIN IEC68T2/6 12g)
  • IP67 protection
  • Work temperature: -30...+90°C

Main features & overview

01 onp1 02 onp103 onp104 onp105 onp1

Overview

Contactless linear position transducer with innovative GEFRAN ONDA magnetostrictive technology for longer lifetime.

The absence of electrical contact on the cursor eliminates all wearing and guarantees almost unlimited life.

The new ONDA technology solution (patented by Gefran) allows to obtain an essential modular structure with compact size for simple installation.

Description

  • Strokes from 50 to 1500mm
  • Sliding or floating magnetic cursor
  • Direct analog output for displacement
  • Standard valve or M12 connector
  • Work temperature: -20...+75°C
  • IP65 protection
  • Power supply 24Vdc ±20%

Main features & overview

02 ik4a

Overview

Contactless linear position transducer with ONDA magnetostrictive technology.

The analog interface, available with various output ranges in voltage or in current, guarantees simpler installation and easier adaptation to existing systems.

The absence of electrical contact on the cursor eliminates all wear and guarantees almost unlimited life.

The IK4 mechanical structure introduces some innovations for using in-cylinder, including free rotation of the connector head.

Description

  • ONDA technology
  • Optimized mechanical structure
  • Strokes from 50 to 4000 mm
  • Wide range of connectors for the electrical connection
  • Rod, nipple, exagonal flange AISI 316
  • Work temperature: -30°…+75°C
  • Resistance to vibrations (DIN IEC68T2/6 12g)
  • Power supply 24Vdc ± 20%
  • Protection IP67
  •  

    Main features & overview

    14 mk4c1

    Overview

    Contactless linear position transducer with magnetostrictive technology.

    The absence of electrical contact on the cursor eliminates all wear and guarantees almost unlimited life.

    The MK4 CANopen integrates a microprocessor to process the measurement and to diagnose the transducer.

    The CAN field bus communication system provides fast and safe transmission.

    The use of CANopen DS-301 protocol and Device Profile DS-406 provides quick and easy integration of the transducer in the control and automation system.

    Description

    • Absolute measurement of position and speed
    • Possibility of one or two cursors simultaneously
    • Local intelligence
    • Interface: CANopen DS-301 V4.01 Device Profile DS-406 V2.0
    • Strokes from 50 to 4000 mm
    • Position resolution up to 2μm
    • Speed resolution up to 0,01mm/sec
    • Linearity error 0.02%
    • Repeatability error 0.01mm
    • Resistance to vibrations (DIN IEC68T2/6 12g)
    • IP67 protection

    A comprehensive range of models with aluminum profile to provide the most appropriate model for every need both for the performance level and for the type of interface, selectable between analog, digital and fieldbus models

    MK4-P Profibus output ONP1-A Analog output
    MK4-A Analog output MK4-S Syncronous serial output
    MK4-C CANOpen output  
       

    What's new in Profile design

    GEFRAN LAUNCHES TWO NEW MAGNETOSTRICTIVE TRANSDUCERS IN ROD AND PROFILE VERSIONS WITH A PROFIBUS INTERFACE
    Gefran has added two new models with a Profibus interface to its range of position sensors that use magnetostrictive technology, in response to the growing demand for products with this type of int...

    ONDA TECHNOLOGY EXTENDS TO THE HIGH PERFORMANCE MK4-A SERIES
    Thanks to the constant focus on technological research and innovation, always the added value of Gefran products, today the MK4-A magnetostrictive profile version transducer series is available ...

    GEFRAN RIDES THE WAVE OF SIMPLICITY IN MAGNETOSTRICTIVE TECHNOLOGY
    Simplicity. This is the main feature of Gefran’s new solution for measuring displacement by means of magnetostrictive technology. The result of constant technological research and innovation (al...

    GEFRAN RENEWS ITS SERIES OF MAGNETOSTRICTIVE TRANSDUCERS WITH SSI INTERFACE
    Gefran has renewed its series of magnetostrictive transducers with SSI interface, increasing performance to satisfy market demands. The electronics has been completely redesigned to improve the lin...

    GEFRAN NOW OFFERS ITS CUSTOMERS ANOTHER SERVICE: DOWNLOAD 3D MODELS OF GEFRAN SENSORS
    In constant contact with its customers when creating and designing applications, Gefran now satisfies their specific needs by providing a new, extremely useful and effective tool.

    Main features & overview

    05 IK4 C

    Overview

    The IK4 CANopen integrates a microprocessor to process the measurement and to diagnose the transducer.

    The CAN field bus communication system provides fast and safe transmission.

    The use of CANopen DS-301 protocol and Device Profile DS-406 provides quick and easy integration of the transducer in the control and automation system.

    The IK4 line’s new mechanical structure offers improved features for in-cylinder use, including a series of new multi-connector models, free rotation of the connector head, and replacement of internal electronics without removal of the transducer.

    Description

    • Absolute measurement of position and speed
    • Interface CANopen DS-301 V4.01 Device Profile DS-406 V2.0
    • Strokes from 50 to 4000 mm
    • Wide range of connectors for the electrical connection
    • Position resolution up to 2μm
    • Speed resolution up to 0,01mm/sec
    • Rod, nipple, exagonal flange AISI 316
    • Work temperature: -30°…+75°C
    • Resistance to vibrations (DIN IEC68T2/6 12g)
    • Conforms to EC directives (EN 50081-2 50082-1)

     

    Main features & overview

    mk4p 

    Overview

    Contactless absolute linear position transducer with ONDA magnetostrictive technology.

    The Profibus fieldbus interface integrates in complex systems with long communication distances, guaranteeing rapid and secure data transmission.

    The absence of contact on the cursor eliminates all wear and ensures almost unlimited life of the transducer.

    Its many advantages include smaller size for easier installation, high protection rating for use in harsh environments, excellent linearity, repeatability, and resistance to vibration and shock, guaranteeing exceptional reliability.

    Description

    • ONDA technology
    • Stroke: 50 to 4000mm
    • Position resolution settable via software up to 1 μm
    • Speed resolution up to 0.25 mm/sec
    • Conforms to CE directives (EN 50081-1 50082-1)
    • Vibration-resistant (DIN IEC68T2/6 12 g)
    • IP67 protection rating
    • Controls up to four cursors simultaneously
    • Two M12 connectors for simplified connection to Profibus and one M8 connector for separate connection to power supply (transducer can be powered without having to be connected to bus)
    • Local intelligence
    • Profibus DPV0 interface on RS485 in conformity to IEC 61158

    Main features & overview

    ik4s 

    Overview

    Contactless linear position transducer with ONDA magnetostrictive technology with RS422-SSI digital output interface.

    The absence of electrical contact on the cursor eliminates all wear and guarantees almost unlimited life.

    The IK4 line’s new mechanical structure offers improved features for in-cylinder use, including a series of new multi-connector models, free rotation of the connector head, and replacement of internal electronics without removal of the transducer.

    Description

    • ONDA technology
    • Optimized mechanical structure
    • Strokes from 50 to 4000 mm
    • Wide range of connectors for the electrical connection
    • Rod, nipple, exagonal flange AISI 316
    • Power supply 10....32 Vdc
    • Resistance to vibration (DIN IEC68T2/6 12g)
    • Protection IP67
    • Work temperature: -30°…+90°C
    • Synchronous Serial Interface direct to controllers
    • Output data resolution available from 1 to 40mm
    • Data format: binary or Gray code; incremental/decremental

    Main features & overview

    16 mk4a

    Overview

    Contactless linear position transducer with ONDA magnetostrictive technology.

    The absence of electrical contact on the cursor eliminates all wear and guarantees almost unlimited life.

    Compact size for simple installation.

    Full protection against outside agents for use in harsh environments with high contamination and presence of dust.

    Excellent linearity, repeatability, resistance to mechanical vibrations and shocks.

    Description

    • ONDA technology
    • Optimised mechanical structure
    • Strokes from 50 to 4000mm
    • Sliding or floating magnetic cursor
    • Availability of several analogue outputs (voltage or current) for direct position and speed measurement or reverse measurement (only position)
    • Single or double cursors models availability
    • Power supply 24Vdc ±20%
    • Resistance to vibration (DINIEC68T2/612g)
    • IP67 protection
    • Work temperature: -30...+75°
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