FluxSet Magnetometers
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  • Frequently Asked Questions

    In Short Terms

    Our patented FluxSetTM magnetometers (developed in MTA MFA) offer excellent solution for the measuring needs of industrial engineers and research scientists for monitoring small magnetic fields in the range of 1 nT - 0.2 mT. Thanks to the novel operating principle our magnetometers retain their sensitivity near to DC magnetic fields (like the much more expensive SQUID magnetometers) while their price remains well below even that of the frequently applied FluxGate magnetometers!

    Operating Principle

    The external magnetic field (which is to be measured) influences the time necessary to produce the reversal magnetization of a ferromagnetic core under periodic magnetic excitation. With suitable core design and excitation field the time shift depends only on the sign and value of the given external magnetic field component Hx,y,z (parallel with the core). By this way the measurement of the magnetic field amplitude is replaced with a high accuracy time measurement.

    Comparing the FluxSet to the more conventional FluxGate, the main difference between them is how they convert the magnetic field into electrical signal. While the FluxGate carries out Amplitude Modulation (the amplitude of the 2nd harmonic is propotional to the measured magnetic field), the FluxSet carries out Puls Width Modulation, which is more resistant against disturbing signals and the thermal noise. To improve the long-term stability of the FluxSet magnetometers even further, automatic compensation can be choosen, however, this reduces the attainable frequency range. (Here you can read more about the
    measuring principles.)

    It should be noted, that all of the FluxSet / FluxGate magnetometers actually measure the Magnetic Field H, and NOT the Magnetic Flux Density B even if the sensitivity is given in T ! (When the measuring is performed in a media that has a relative permeability of very close to 1, as in the case of air, 10-6 T flux density corresponds to 0.7958 A/m magnetic field intensity.)

    Main Features

  • Highly sensitive magnetic field measurement
  • Measurement of fluctuating / varying magnetic fields
  • Small sensor volume
  • Ideal (dipole-type) spatial resolution
  • Wide temperature range
  • No need for special calibration procedures
  • No effect of accidental high magnetic fields on performance
  • Shock-resistant construction
  • Palm-size (1-dimensional model)
  • Battery operation (1-dimensional model)
  • PC controlled (3-dimensional model)
  • Continuous data acqusition (3-dimensional model)
  • Easy to use
  • Very affordable price

    Sensor Specifications

    MS 20/80 MS 60/200
    Temperature Range: -20 °C to +80 °C -60 °C to +200 °C
    Calibration Accuracy: 1 % 1 %
    Linearity Error: < 0.1 % < 0.1 %
    Core Volume: 1 mm3 1 mm3


    Available Models:

    FluxSet-H FluxSet-GC FluxSet-C FluxSet-G


    FluxSet-H Palm-Size 1-directional Magnetometer
    This model is designed to measure only 1 component of the magnetic field at a time
    Range Setting: manual
    Selectable Ranges: 200T (160 A/m), 20T (16 A/m), 2T (1.6 A/m)
    Resolution: 3.5 digit
    Accuracy: 1 %
    Analog output: 10 mV/ T
    Display: LCD numeric
    Dimensions: 145 x 85 x 37 mm
    Mass: 200 g
    Power: 6F22 (9V) battery or external DC


    FluxSet-GC Differential PC-controlled Magnetometer
    This model is designed to measure the axial component of the magnetic field vector and any gradients of this component with manually adjustable sensor arrangement.
    Range Setting: automatic
    Selectable Ranges: (absolute
    or
    differential)
    50T, -3dB at 100 Hz
    5T, -3dB at 10 Hz
    0.5T, -3dB at 1 Hz
    Resolution: 0.025 % FS
    Accuracy: 1 %
    Display: Numeric & Graphic


    FluxSet-C 3-dimensional PC-controlled Magnetometer
    This model is designed to determine the magnetic field vector by measuring its components in 3 orthogonal directions defined by the 3 sensor axes.
    Range Setting: automatic
    Selectable Ranges: (absolute
    or
    differential)
    50T, -3dB at 100 Hz
    5T, -3dB at 10 Hz
    0.5T, -3dB at 1 Hz
    Resolution: 0.025 % FS
    Accuracy: 1 %
    Display: Numeric & Graphic


    FluxSet-G Palm-Size Differential Magnetometer
    This model is proposed to measure the axial component of the magnetic field vector and any gradients of this component.
    Range Setting: manual
    Selectable Ranges: (absolute
    or
    differential)
    200T
    20T
    2T
    Resolution: 3.5 digit
    Accuracy: 1 %
    Display: Numeric
    Power: 6F22 (9V) battery or external DC



    FluxALARM - See what it can do for you!
    Intense chemical, radioactive and electro-magnetic pollution of our environment is a by-product of civilization of the last hundred years. To reduce or eliminate them is of vital interest.
    All living matter is exposed to the static magnetic field of Earth. In civilized regions elecronically induced fields also effect us, in part by distorting the static field, in part by adding to it. To prevent unfavourable effects, to measure such fields, to consistently update international limit standards and to clarify the interaction mechanisms between life and magnetic force are moral obligations of researchers.

    HORIZON-MULTIPLAN Ltd. has developed a series of sensor devices for detecting even very weak magnetic fields and for effectively warning their users of unwanted magnetic effects.

    FULXALARM PRO To measure and indicate
  • the intensity (between nano- and millitesla magnitude)
  • the direction and
  • the rate of change of static and low-frequency (from DC up to 1 Hz) weak magnetic fields.

    The mini-weight portable sensor is battery operated. The detected field intensity is output to a display as well as to an interface connector for further data processing. The device can be employed in every sphere of life (the monitor work health conditions and houshold activities, for therapeutic intervention, research and development, etc.).


  • FULXALARM MINI BADGE - for you and your child...
    To be worn on clothing (T-shirts, etc.)
  • to monitor magnetic field intensity changes (30-300 Hz),
  • to give a warning signal when a preset level of magnetic field intensity is exceeded. Default sensitivity is optionally factory-adjusted to a level between 1 nanotesla and 100 microtesla selectable by the manufacturer.
    Recommended for work hygiene, pregnant women, chield-protection* and for monitoring every activity in the household.

    *NOTE: Low-frequency changes of magnetic field were reported to increase the risk of leukemic disease three to fourfold when compared to an unexposed child population.


  • HORIZON-MULTIPLAN Ltd.
    János Szöllősy
    H-1525 Budapest-114, P.O.Box 49, Hungary
    Phone:+36-1-3959036, Fax:+36-1-3959057, E-mail:
    szjanos@ns.kfkipark.hu
    Manufacturer: AVIATRONIC Ltd.

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