DURRIDGE RAD7 Manual del usuario - Página 6

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DURRIDGE RAD7 Manual del usuario

2.6 Multiple RAD7s

Before using the Operational Check to check a RAD7, the Operational Check must be left sealed for a
month, in order for the radon inside the container to reach equilibrium. That means a RAD7 can have
its operation checked each month on a regular basis. However, there is nothing to stop us hooking up
multiple RAD7s in series in the loop connected to the Operational Check. This increases the volume of
the loop and hence decreases the radon concentration in the loop. This method is recommended for
checking up to six RAD7s on a monthly basis.
Figure 3 Multiple RAD7 Sensitivity Check Configuration
Each month, all four RAD7s can be connected in series with one another and thoroughly purged and
dried out, before being connected to the Operational Check to check that the instruments are counting
and obtain spectra. During the measurement all the RAD7 pumps, except one, should be set to OFF
Setup, Pump, Off, [ENTER]
(
.)
Sec$on 2
Operational Check
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