MARKUS®: portable detector for measuring radon in soil air

MARKUS® is a professional instrument used to measure the presence of radon in soil, operating at a depth of 70-100 centimetres.

With MARKUS® you get:

  • A fully portable, high-precision radon detector designed for professional field use
  • Accurate radon content measurement within just 12 minutes
  • Up to 70 measurements on a full charge
  • Short waiting time between measurements

Common areas of application for MARKUS® are the investigation of radon content in soil before new construction or other mapping, as well as momentary measurement in air with concentrations above 1 kBq/m³.

MARKUS® Inquiry Form ↓






    MARKUS® is a fully portable, battery-operated instrument designed to measure radon content in soil.  It works by inserting a probe into the ground and pumping air from the earth into a chamber. Any presence of radon decay products are indicated on its display within minutes. There is a water seal at the top of the probe to prevent water being pumped into the chamber.

    What’s included:

    • Robust aluminium transport case
    • Probe with driving head and tip, probe handle, and spanner for connection
    • Water guard
    • Battery charger
    • Calibration certificate

    A slide hammer is available as an optional extra, negating use of a mallet to insert the probe into the ground.


    Technical Specifications

    Air flow 1.8 lit/min
    Pumping time 30 sec
    Lower pressure 0,95 x atm
    Type of detector Partially depleted PIPS detector
    Nominal detector area 150 mm²
    Window thickness 100 µm
    Energy resolution detector (vacuum) < 14 keV
    Battery capacity Approx. 70 measurements
    Type of battery LiPo
    Battery charging time 8 hours
    Sensitivity 10% at 50 kBq/m³
    Measurement time Approx. 12 minutes
    Measuring range 0,3 – 9 999 kBq/m³
    Dimensions 220 x 122 x 80 mm (L x H x D)
    Weight 3 kg

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