This instrument measures radon/thoron and the progeny attached and unattached. The problem I have is the correct parametrization of the different steps during the cycle measurements. The manual is not useful.
More than 100 EQF3220 are used worlwide - with the rovust measuribg head we can measure uattsched frsction cluster and attchedof Radon and Thoron progeny with 1 min detection limit of less than 1 Bq/m3 plus longlived Aöpha and Bets nuclides lije Pu, U Th... Sr90 Cs137....A incöuded methan and Carbon monoxide sensor warned the staff in Mines and switch iff the device before explosive concentration - the radon and thoron gas is also measured with high sensitivit