RTM 2200 Soil Gas – Radon and Thoron Monitor with Integrated Measurement of the Soil Permeability

13.949,00 Inc. VAT: 17.017,78

🚚 FREE SHIPPING on online orders over € 200 (Inside EU). Orders below € 199 depend on the final destination.

The new RTM 2200 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 of 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.

Expected delivery date is: August 19, 2024 - August 21, 2024


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 at 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 RTM 2200.

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
  • Sensors for CO2 and CH4 integrated in the internal air loop


Radon chamber +Detector:   4 x 200mm² ion-implanted silicon detector +Internal volume:   3000mm³ (total volume of the internal air loop) +Range:   0…10 MBq/m³ +Sensitivity:   3 or 7 cpm/(kBq/m³) for fast or slow mode +Response time:   12 or 120 min for fast or slow mode Analysis/Results:  Alpha spectroscopy with a separate calculation of Radon and Thoron concentration. Storage of the alpha spectrum for each data record. +Pump: High-quality membrane pump; Flow rate of 0.5 l/min controlled by a processor +Fresh air flushing:  Automatic switch over between fresh air and sample air inlet Soil permeability +Principle: Measurement of the pressure difference at a regulated flow rate (1 l/min) +Range: 8 *10-12 m² … 8 * 10-14 m² +Sampling: Tube connection to soil gas probe Protection functions +Battery voltage: Measurement will be stopped in case of a discharged battery; hardware protection against deep discharge. +Flow rate: Alert signal if the flow rate cannot be maintained by the regulator. +Pump power consumption: Measurement will be stopped in case of a damaged or worn pump. +Water inlet protection: Pump will be stopped as soon as water is sucked. Stainless steel can may be removed to drain the water. Internal sensors +Rel. humidity:  0 …100%, accuracy ± 2% +Temperature:  -20 … 40°C, accuracy ± 0.5°C +Bar. pressure:  800 … 1200mbar, accuracy 0.5% MW +Flow rate:  0 … 2 l/min, accuracy ± 5% @ 1 l/min Humidity/temperature sensors are integrated into the air internal air loop Common +GPS receiver: High accuracy by simultaneous reception of GPS, Galileo and GLONASS +Sampling programs: Continuous sampling (1, 5, 15, 30 and 60 minutes), Soil gas cycle (20 minutes),  Additional cycles may be programmed by the user +Memory: SD card, 2 GB (approx.. 1 million data records) +Control/Display:  Touch screen 6 x 9 cm wide, visible in direct sunlight +Interfaces: USB and RS232 +Power supply: Internal 12V NiMH rechargeable battery, AC/DC wall adapter +Dimensions/weight: 235mm x 140 mm x 255 mm / approx. 6 kg (instrument only) +Case:  Peli case 1430 with bulkhead fittings and signal light, (W x D x H: 417 mm x 221 mm x 334 mm; weight 2.9 kg) +Software:  dVISION/dCONFIG; server software for instrument access via internet +Included in delivery: Instrument with cases, 12V/60VA AC/DC adapter, USB – cable +Options: TDR soil moisture probe, Differential pressure sensor 0 … 25 Pa, More sensors on request Product Specifications (pdf format in english)


User Manual (pdf format in english) Product Specifications (pdfformat in english) Software  


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SARAD GmbH provides a general 24-month warranty for customers in the European Union countries and 12 months for customers outside of the EU. The warranty period begins with the receipt of the goods by the customer. We reserve the right to rectification.


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Il team NITON srl nasce nel 2017 dalla volontà di creare un gruppo di persone che si sono scelte, unite dalla condivisione degli stessi valori professionali ed umani: dedizione al lavoro, onestà intellettuale, etica e rispetto dell’ambiente a 360°.
Professionisti del Radon accreditati dall’NRPP: Niton è la prima ed unica società in Italia che si avvale, per i rilievi Radon, di professionisti certificati dal National Radon Proficiency Program (NRPP) degli Stati Uniti. Perché quando affermiamo di essere specialisti del Radon, abbiamo le carte per dimostrarlo!FIDOtrack: FIDOtrack è il sistema di misura della concentrazione di Radon per il medio e lungo periodo. Semplice da usare, ricevi i rivelatori, li posizioni, al termine del periodo di esposizione ce li rimandi e ricevi via e-mail un certificato ufficiale con l’esito delle misure. Niton è risultato uno dei migliori laboratori europei nella prova di Interconfronto 2019 organizzato dall’Istituto Tedesco Bfs, con i propri rivelatori FIDOtrack.
Aspiratori di Radon: NITON srl è distributore ufficiale dei prodotti RadonAway ed è distributore esclusivo degli aspiratori RadonAway in Italia.
Cerchi un professionista del Radon per un’indagine approfondita del tuo immobile? Contattaci al numero 0222197130 o tramite e-mail all’indirizzo [email protected]