Detectors Areas of Application Unexploded Ordnance (UXO) VXB2.1 – Magnetometer Borehole with VFC4.1

VXB2.1 – Magnetometer Borehole with VFC4.1

Magnetometer Kit, optimized for Continuous Use in Boreholes (± 20,000 nT)

Your partner for innovative UXO solutions

  • Simple operation
  • Rugged construction and low weight
  • Fast start-up
  • No sensor calibration required
  • Measuring range up to ± 20,000 nT
  • Android app EVA4mobile® for recording borehole and surface data
  • Powerful 6-inch VFC4.1 field computer for processing extremely large data volumes

The VXB2.1 borehole detector together with its components provides a high-performance detection system for locating ferromagnetic objects in soil. As a result, it meets toughest borehole detector performance requirements in civil and military ordnance removal.

The survey data can be displayed and reviewed immediately on the VALLON field computers VFC4.1 as a curve. The data can be analyzed on the desktop PC in detail later using VALLON evaluation software available as an option.

Suitable for following searches ...

UXO :  Ideally suited for borehole search for ferromagnetic objects of all kinds (such as unexploded ordnance, etc.), with data acquisition.
Underwater :  Also suited for underwater use.
Borehole :  Optimized for use in boreholes – ready for use with optional SEPOS® detector
  • Technical Data


    Sensor distance: 50 cm (19.69 in)
    Sensor tube diameter: Ø 3.2 cm (Ø 1.26 in)
    Measuring range: ± 20,000 nT

    Alarm signal
    Visual (VFC4)

    Digital probe VSM4: IP68, 60 m


    Case sensor set
    102 x 43 x 17 cm (40.15 x 16.93 x 6.69 in)

    Case electronic set
    52 x 44 x 20 cm (20.47 x 17.32 x 7.87 in)

    *Tolerance ± 3 %

    Ambient temperature

    -31°C – +63°C (-24°F – +145°F)

    Storage temperature

    -33°C – +71°C (-27°F – +160°F)

    Attention: Storage temperature without battery


    Case sensor set – including standard scope of delivery
    12 kg (26.45 lbs)

    Case electronic set – including standard scope of delivery
    7 kg (15.43 lbs)

    *Tolerance ± 10 %

    Disposable/rechargeable battery

    Rechargeable battery pack – Standard

    Disposable/rechargeable battery operating time*

    Rechargeable battery pack with VCU2: About 15 h

    *Ambient temperature of around 20 °C, rechargeable battery pack.

    Subject to changes that serve technical progress.
  • Downloads

  • Scope of Delivery

    Basic package VXB2.1 | Item No. 2002590002
    Field computer VFC4.1, EVA4mobile® – Integrated license, Central electronics unit VCU2, Case sensor set, Case electronics set, Digital probe VSM4, sensor cable VXB2.1 SEPOS® 15 m/12 m, Extra weight, Hook wrench 30/32, Ring screw, 4 x Carabiner for belt, Waist belt, Battery VXB2.1/VXB3, Kit Battery charger, Operation manual, Field manual

  • Parts/Accessories

    • Item No. 2802590001 Case sensor set VXB2.1 Rugged case for storage and safe transport of the detector
    • Item No. 2802590002 Case electronics set VXB2.1 Rugged case for storage and safe transport of the electronic set
    • Item No. 2902590001 Sensor set VXB2.1 Sensor set with the digital probe VSM4, the sensor cable VXB2.1 SEPOS®, 15 m/12 m as well as additional accessories.
    • Item No. 2005320010 Digital probe VSM4 Digital probe with 50 cm sensor distance
    • Item No. 2005350001 VFC4.1 – Small Field Computer for EVA4mobile® Handy field computer (Android operating system) with accessories in a compact case
    • Item No. 2405350010 EVA4mobile® – Integrated license in combination with field computer VFC4.1
    • Item No. 2009090000 EVA4ALL® Evaluation Software for Surface and Borehole Survey
    • Item No. 2002540110 Central electronics unit VCU2 Electronics unit for device settings and interface to field-computer
    • Item No. 2900130130 Detector SEPOS®-Borehole SEPOS® detector for the precise determination of the probe position
    • Item No. 2900130170 Borehole Shaft Guard For the protection of the sensor cable during use in boreholes
    • Item No. 2500130032 Connection cable SEPOS®-Borehole (VCU) Connecting the SEPOS®-Borehole detector to the central electronics unit VCU2/VCU3
    • Item No. 2502590001 Sensor cable VXB2.1 SEPOS®, 15/12 m Cable with position sensors for the borehole detection
    • Item No. 9150006007 Waist belt Waist belt for the easy attachment of VCU2/VCU3
    • Item No. 8902590005 Carabiner for belt For the attachment of the central electronics unit VCU2/VCU3 to the belt
    • Item No. 9150006024 Hook wrench Handy hook wrench 30/32 to adjust the head of the probe
    • Item No. 2909990105 Ring screw Allows the attachment of additional weight at the probe for under water use
    • Item No. 2909990631 Extra weight For the attachement an the bottom side of the probe für under water use
    • Item No. 2902540104 Battery VXB2.1/VXB3.1
    • Item No. 2902540110 Kit Battery charger Power adapter and universal travel adapter
    • Item No. 8902540103 Operation manual VCU2 Detailed operation information
    • Item No. 8905350000 Operation manual VFC4.1 Detailed operation information

Service and contact

Hotline: +49 7121 9855-0