What's new

august 2016


MI.AM will be as a sponsor in Prague at the 8th International Conference on protection against radon at home and at work al at 13th International Workshop GARRM (on the Geological Aspect of Radon Risk Mapping) The conference will be held at the Faculty of Nuclear Sciences and Physical Engineering (www.fjfi.cvut.cz) of the Czech Technical university (www.cvut.cz)
The address is FNSPE CTU, Brehová 7, 110 00, Prague 1.

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MR1 PLUS Radon Monitor is a portable instrument for radon concentration measurement based on a scintillation cell detector. Applications are grab sampling, continuous measurement, radon sniffing. Both passive and active sampling are available. Several sampling methods and accessories allow  to perform radon gas analyses in soil, air, and water. 

MR1 monitor is based on a scintillation cell detector. A 255 ml Lucas cell is coupled to a photomultiplier tube. Radon enters the cell either through a permeable membrane or a continuous airflow through the cell itself. When radon and radon daughters decay, alpha particles hit the zinc sulphide. The alpha particle energy is converted into luminous pulses that are amplified and counted.

Counting time intervals are set by the user from 1 minute to 99 hours. Internal memory capacity is 999 measurement intervals. Data can be shown on a display, printed out or downloaded via serial port. Software “Radon Explorer” allows remote control and data download via GSM modem. 


  • Basic model with passive cell (diffusion sampling)

  • Adjustable built-in pump and adapter for active cells (flow sampling)

  • 24-column external printer

  • Sensors for humidity, temperature, and absolute pressure

  • Sensor for differential pressure

  • “Radon Explore” advanced software for remote control

  • Probe for radon in soil

  • Unit for continuous sampling of radon in water

Detector : ZnS(Ag) scintillation cell

Nominal Background : 0.5 cpm

Nominal Sensitivity : 0.035 cpm/Bq/m³

Calibration : traceable to NIST

Lower Limit of Detection : 15 Bq/m³ at 95% confidence level (24h)

Range  : 15 to 3.000.000 Bq/m3

Memory : 999-interval cyclic

Measurement Intervals : settable from 1 minute to 99 hours

Pump : built-in with 0.3 to 0.7 lpm adjustable flow

External Outputs : RS-232 serial port for printer or PC

Power Source : 230VAC, 50 Hz power supply/battery charger

Battery : 12V, 2.4 Ah

Battery Life : 32 hours (pump off)

Printer : thermal, 24 columns

Alarms : settable alarm threshold with isolated relay contact

Operating Temperature : +5 to +45°C

Humidity  : 10 to 90% (non-condensing)

Size : 110 x 190 x 270 mm, cell excluded

Weight : 3.1 kg.

  MR1-Brochure.pdf   MR1-Rn-chamber-test.pdf

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