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Calle Valdemorillo, 50 28925 Alcorcón Madrid, Spain
Phone
+34 916 466 267
Email
info@helgeson.es

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Radon/Thoron monitor RTM 1688-2

DESCRIPTION

The RTM 1688-2 is a universal and easy-to-handle monitor for fast measurement of radon and thoron, soil gas measurements and determination of radon concentration in water samples. Its high sensitivity, combined with its spectroscopic measuring method, allows for fast measurement of even low concentrations of radon and thoron.

Radon entry paths can be discovered thanks to its “sniffing mode”. Its operation of the radon/thoron monitor is performed only with one button. It can be directly connected to a modem for remote data transmission. The Radon Vision software (included in delivery) handles the remote connection as simply as a direct cable link. Each record contains a complete alpha spectrum for quality control, and the data stored within the instrument can be read in a PC even if a measurement is in progress.

The instrument is equipped with sensors for temperature, humidity and barometric pressure. An integrated tilt detector will give a signal if the radon/thoron monitor has been removed from its original position during the measurement.

FEATURES

Features

  • Absolutely universal radon/thoron monitor for its entire measurement range
  • High sensitivity and simultaneous determination of the thoron concentration
  • Alpha spectroscopy measurement method, for low radon concentrations and fastest possible measurements
  • Soil gas and water measurements with built-in pump
  • Water ingress protection (optional)
  • User-friendly, one-button operation
  • Remote data transmission possible
  • Fluctuations in humidity do not affect the readings (no desiccant needed!)
  • Storage of the complete alpha spectrum for each measuring point
  • Measurement of samples from small volumes (chamber volume 250 ml)
  • 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 (complete): 250 ml
  • Range: 1 – 10.000.000 Bq/m³
  • Accuracy: <=5%
  • Sensitivity: 3 / 6,5 counts/min @ 1000 Bq/m³ for fast/slow mode
  • Response time: 12 / 120 min for fast / slow mode
  • Mesurement/Analysis:
    • Alpha spectroscopy with separate calculation of the radon and thoron concentration
    • Storage of all individual spectra
  • Pump: diaphragm pump, flow rate: 0,3 l/min, continuous / interval operation
  • Measuring interval: 1 – 255 min
  • Data storage: 2047 data records (non-volatile memory), alpha spectra included
  • Operation: one button control (lock-function)
  • Display: back light display (3 x 16 characters)
  • Software: Radon Vision 7
  • Interfaces: USB, RS232 or RS485 with ModBus RTU (optional)
  • Power supply:
    • 18 V/DC 1 A, rechargeable battery
    • > 150 h (continuous pump operation)
    • > 10 days (interval pump operation)
  • Power supply adapter: 100 – 240 V/AC. 50/60 Hz / 18 V/DC 1 A
  • Dimensions: 232 mm x 182 mm x 135 mm (without handle)
  • Weight: 3,5 kg
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Application

Environmental measurements

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