RTM 2200 Soil Gas - Radon / Thoron monitor for professionals

 1-2 weeks
Art.-Nr.: 22040021
EAN: 7141224199026
€13,061.00 excl. VAT

Radon/Thoron monitor RTM2200 Soil Gas - an ultimate solution for Radon professionals

  • Radon/Thoron measurements in:
    • air;
    • water probes;
    • soil gas incl. soil permeability;
    • exhalation;
  • Full real Alpha spectroscopy
  • High sensitivity & wide measurement range – up to 10,000,000 Bq/m³
  • Insensitive to changes in humidity and temperature
  • Big memory – > 1 Mio data records
  • Robust protection suitcase (IP67) 
  • Automatic water inflow protection
  • USB/RS-232 interfaces for data export
  • GPS receiver
  • Power supply via mains power (110/230V) or 12V internal battery (> 100 hours continuously measurement)
  • DAkkS-accredited calibration according to the DIN EN ISO/IEC 17025:2018 included!
  • Art.-Nr.
  • 22040021
  • EAN
  • 7141224199026


The new "RTM 2200 Soil Gas" is the ultimate tool for a quick, accurate and reliable in situ radon soil gas measurement (EN ISO 11665-11) by a single keystroke. The implemented sampling cycle covers the determination of the soil permeability as well as the chamber flushing with fresh air at the end of the measurement. A water inlet protection switches off the pump in case of accidentally sucking groundwater. The integrated GPS receiver makes the later mapping of sampling points easy.

The principle of real alpha spectroscopy over the entire measurement range makes the instrument the first choice for soil gas measurements.

The advantages in overview:

  • Fastest possible response and decay time; no delay times
  • No interference by Thoron (Rn-220 – will be measured separately)
  • No long-term contamination by Po-210 even after permanent measurements at high radon concentrations

The unit comes in a very robust and handy case for use in harsh environmental conditions. A signal light at the top of the case indicates the end of a measurement, or warns in case of very low soil permeability.

The powerful software dVISION provides all functions for data management, including the display of results in the integrated map (Google™ based) as well as the export to CSV or KML files.

Of course, all functions required for typical applications (long- and short-term measurements, searching for entry paths, radon in water, or radon exhalation) are implemented in the RTM2200.

Additional options:

  • TDR probe for simultaneous measurement of the soil moisture as another important parameter for the evaluation of the radon potential
  • Blower door kit: contains a high-precision and long-term stable differential pressure sensor for very small pressure drops (range 0 … 25 Pa) to measure pressure differences between individual rooms. This function is necessary to investigate radon transportation in buildings (currently not available)
  • Sensors for CO2  (0-10%) and CH4 (0-5%) integrated into the internal air loop

The Radon gas monitor comes with the DAkkS-accredited calibration certificate according to the DIN EN ISO/IEC 17025:2018.

A standard calibration is performed at a radon concentration of 3 000 Bq/m³, with the prior determination of the background effect. A second calibration point at a radon concentration of 300 Bq/m³ is possible on demand and at additional cost. A separate calibration certificate is created for each calibration point.

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Warranty SARAD GmbH provides a general 24 month warranty for customers in the European Union countries and 12 months for customers outside of the EU.
Repair Service We offer a cost effective repair service for our products. We repair your instruments within the warranty period and after.