Detectors Areas of Application Unexploded Ordnance (UXO) VXB3.1 – Magnetometer Borehole with VFC4.1

VXB3.1 – Magnetometer Borehole with VFC4.1

Magnetometer Kit, optimized for Continuous Use in Boreholes (± 300,000 nT)

Your partner for innovative UXO solutions

  • Measuring range up to ± 300,000 nT
  • Compensation range of ± 75.000 nT
  • Rugged construction and low weight
  • Extremely fast start-up
  • Simple operation
  • No sensor calibration required
  • Android app EVA4mobile® for recording borehole and surface data
  • Powerful 6-inch VFC4.1 field computer for processing extremely large data volumes

The VXB3.1 borehole detector together with its components provides an extremely reliable detection system for locating ferromagnetic objects in soil. As a result, it meets toughest borehole detector performance requirements in civil and military ordnance removal.

Thanks to the extremely large compensation range of the new built-in digital probe VSM4plus, the start-up is greatly facilitated.

The survey data can be displayed and reviewed immediately on the VALLON field computer 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: ± 300,000 nT
    Compensation range: ± 75,000 nT

    Alarm signal
    Visual (VFC4.1)

    Digital probe VSM4plus: 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 VCU3: About 13 h

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

    Subject to changes that serve technical progress.
  • Downloads

  • Scope of Delivery

    Basic package VXB3.1 | Item No. 2002590202
    Field computer VFC4.1, EVA4mobile® (integrated license), Central electronics unit VCU3, Case sensor set, Case electronics set, Digital probe VSM4plus, Sensor cable VXB3.1 SEPOS® 15 m/12 m, Extra weight, Hook wrench 30/32, Ring screw, 4 x Carabiner for belt, Waist belt, Battery VXB2.1/VXB3.1, Kit Battery charger, Operation manual, Field manual

  • Parts/Accessories

    • Item No. 2902590081 Case sensor set VXB3.1 Rugged case for storage and safe transport of the detector
    • Item No. 2902590162 Case electronics set VXB3.1 Rugged case for storage and safe transport of the electronic set
    • Item No. 2902590201 Sensor set VXB3.1 Sensor set with the digital probe VSM4plus, the sensor cable VXB3.1 SEPOS®, 15 m/12 m as well as additional accessories.
    • Item No. 2005320020 Digital probe VSM4plus Digital probe with 50 cm sensor distance, optimized for continuous use in boreholes (± 300,000 nT)
    • 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. 2002540310 Central electronics unit VCU3 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. 2502590201 Sensor cable VXB3.1 SEPOS®, 15 m/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