AlphaE Radon Monitor

The AlphaE is a lightweight, versatile continuous radon monitor for professional use. The ultra-small monitor provides fast and accurate time-resolved measurements of Radon concentration, suitable for use both indoors and outdoors.

The AlphaE provides cost-effective radon measurement, with the ability to measure low radon levels, below 100 Bq/m3. As well as monitoring the radon concentration indoors and outdoors, the AlphaE can also be used to measure personal radon exposure and radon dose.

Key features of the AlphaE radon monitor:                

  • Light-weight and ultra-small
  • Time-resolved measurement for the exact determination of radon levels
  • Wide measurement range of 20 Bq/m3 to 10 MBq/m3
  • Acoustic alerts for both Radon concentration and dose
  • Silicon diode diffusion chamber
  • Sensitivity of 3 cph at 100 Bq/m3
  • Simultaneous recording of air temperature, humidity and pressure
  • Up to 6 months battery life
  • Built-in tamper detection (relocation of device)
  • DataVIEW Lite included as standard, for data analysis, readout, visualisation and export
  • Optional Bluetooth interface – allowing transmission of current measurement values to external gateways, including smartphones and tablets.

The AlphaE was developed by Saphymo GmbH in cooperation with the Helmholtz Zentrum, Munich. Extensive testing has proven the validity of calibration and correct operation of the AlphaE, even in high humidity conditions.

AlphaE Radon Monitor applications

  • Short-term and long-term radon monitoring projects, indoors or outdoors
  • Radon concentration measurement in buildings, including workplaces, public buildings and private houses
  • Underground radon monitoring, such as in mines and caves, including areas of high humidity
  • Personal radon exposure
  • Personal radon dose

AlphaE Radon Monitor specifications

Detection Principle Diffusion chamber with silicon diode
Measurement range 20 Bq/m3 ... 10 MBq/3
Sensitivity 3 cph at 100 Bq/m3
Dose calculation Based on user-settable equilibrium factor and dose conversion factor (standard values are preset)
Dose range 0 – 1 Sv
Measuring cycle Adjustable from 1 min to 12 hrs
Storage capacity 8,500 data sets (ca. from 6 to 4,250 days, depending on set measuring cycle)
Diffusion time constant Typically 1 … 2 hrs (user adjustable smoothing factor)
Battery life (rechargeable)
up to 6 months (rechargeable via USB)
USB, cable incl. charging unit
Additional sensors
Air temperature, air pressure, air humidity, tamper detection (relocation)
6 digit LCD + 5 digit alphanumeric, backlight
Operation range
- 20 °C - + 50 °C, 5% - 90% relative humidity
Dimensions / Weight / Housing
108 mm x 68 mm x 30 mm / 165 g / aluminium

AlphaE Radon Monitor accessories

  • Suitcase – for the safe transport of one AlphaE unit and all available accessories
  • Belt pouch – Allows easy fastening of the AlphaE at the belt, giving the unit IP51 protection
  • Holder for wall mounting – Including a clamp and lock
  • Radon permeable silicon bag – Silicon bag with a secure roll-up seal, allowing the use of the AlphaE in high humidity conditions, whilst having good radon permeance
  • Dust proof Tyvek bag – Radon permeable polyethylene nonwoven material (Tyvek), for protecting the AlphaE device against dust and dirt. Featuring a plastic viewing window, fastening cord and stopper



The LabLogic Group will always treat your details with the utmost care and will never sell them to third party companies.

Please choose one of the following: