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RTM 2200 Soil/Gas radon/thoron monitor

DESCRIPTION

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) with 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 ground water. The integrated GPS receiver makes the later mapping of sampling points easy.

The principle of real alpha spectroscopy offers multiple advantages which makes this system a top-of-the line option, sucn as theFastest possible response and decay time, no delay times, no interference by thoron, and no long term contamination by Po-210.

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. Additional optionsinclude a TDR probe for simultaneous measurement of the soil moisture, and the integration of CO2 and CH4 sensors in the internal air loop.

FEATURES

Features

  • Determination of the radon and thoron concentration with integrated simultaneous soil permeability measurement and water ingress protection
  • Fastest possible response and decay times of the radon signal
  • No falsification of measured values by thoron (220 Rn), thanks to separated measurement and real spectroscopy
  • No long-term contamination by 210 Po even with constant measurement of high radon soil air concentrations
  • Handy, robust case with a high degree of protection (at least IP54)
  • Warning lamp signals the end of a soil air measurement or insufficient soil permeability
  • GPS receiver enables later display on a map (GoogleTM)
  • Optional TDR probe for simultaneous measurement of soil moisture
  • Optional sensors for CO2 (0-10%) and/or CH4 (0-5%) in the air circuit
  • DAkkS-accredited calibration according to DIN EN ISO/IEC 17025:2018

Specifications:

  • Detector type: 4 x 200 mm² Si-detector with HV-chambers
  • Internal volume: 300 mm³
  • Range: 1 – 10 000 000 Bq/m³
  • Sensitivity: 3 / 6.5 cpm/(kBq/m³) for fast / slow mode
  • Accuracy: <=5%
  • Response time: 12 / 120 min for fast / slow mode
  • Measurement/Analysis:
    • Alpha spectroscopy with separate calculation of radon and thoron concentration
    • Storage of the alpha spectrum for each data record
  • Pump: membrane pump, flow rate of 0.4 or 1.2 l/min, controlled by processor
  • Fresh air flushing: automatic switch over between fresh air and sample air inlet
  • Internal sensors:
    • Rel. Humidity: 0 – 100%, accuracy ± 2%
    • Temperature: -20 – 40 °C, accuracy ± 0.5°C
    • Bar. Pressure: 800 – 1200 mbar, accuracy 0.5% MW
    • Flow: 0 – 2 l/min, accuracy ± 5% @ 1 l/min, humidity/temperature sensors integrated in the internal air loop.
  • Data storage: SD Card, 2 GB (>1 Mio. data records)
  • Operation/ Display: touchscreen 6 x 9cm, visible in direct sunlight
  • Interfaces: USB, RS232
  • Power supply: internal 12V NiMH rechargeable battery (>100 h)
  • Dimensions: 235mm x 140mm x 255mm
  • Weight: 6 kg (excl. accessories)
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Brand

Application

Environmental measurements

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