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Application:
Detection of Rising Radon Levels in aquifer on drinking water is important to the health and safety of
consumers and to the successful compliance to current EPA standards by Utilities and Water Districts.
Description:
Water flows continuously * through the lower section of the FLO-9 sample head. Some of the suspended
Radon gas escapes from the water due to its vapor pressure. If desired, the amount of, Radon escaping can be
increased by heating, agitating, bubbling, etc.
The resultant radon gas is detected by the PAS-8 alpha scintillation in the upper chamber. The count rate from
the PAS-8 Detector is displayed on the LAM-10 alarming AC-DC Ratemeter or other TA counter. User can set
alarm level as desired.
MODEL RADON-7 System Includes
•FLO-9 Sample Head
•PAS-8 Alpha Scintillator
•LAM-10 Alarming Ratemeter
The RADON-7 Radon Alpha Scintillation system combines a modified PAS-8 Alpha Scintillation Probe plus
FLO-9 vapor-flow-thru vessel for sample containment. In this detection system, the protective ring and grill
normally included in the PAS-8 when same is used as a free probe, is deleted to enhance sensitivity to
alpha radiation.
The sensitivity of the PAS-8/FLO-9 to 5 MeV Alphas is typically 80-85% of 2 pi. It is completely insensitive
to Betas and Gammas. Background is typically less than one count per minute. Sample cavity is 2''
diameter x 1/2'' deep.
The PAS-8/FLO-9 is compatible with Technical Associates Model FS-5T series Scalers and Ratemeters
of the LAM, PUG and FM-5 series or any other high-quality scaler or ratemeter furnishing well-regulated
high voltage +700 to 1200 V and accepting 100 mV negative going pulses from a 200 meg source.
Termination is BNC (Optional MHV).
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