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3 Product description
MINITRAC 31 • Foundation Fieldbus
41782-EN-211203
Fig. 3: Gamma modulator (optional) for uninterrupted measurement even with
interference radiation
1 Gamma modulator (mounted on the source holder)
Forambienttemperaturesupto120°C(248°C)thegammamodula-
torisoptionallyavailablewithwatercooling.
Anynumberofdevicescanbesynchronized.Tosynchronizeseveral
gamma modulators, you need a controller.
3.5 Corresponding source container
A radioactive isotope in a suitable source holder is the prerequisite for
a radiometric measurement setup.
Thehandlingofradioactivesubstancesisregulatedbylaw.Theradia-
tionprotectionrulesofthecountryinwhichthesystemisoperated
applyrstandforemost.
In Germany, for example, the current radiation protection ordinance
(StrlSchV)basedontheAtomicEnergyLaw(AtG)applies.
Thefollowingpointsareimportantformeasurementwithradiometric
methods:
A handling permit is required for operation of a system using gamma
rays.Thispermitisissuedbytherespectivegovernmentoceorthe
responsibleauthority(inGermany,forexample,ocesforenviron-
mentalprotection,tradesupervisoryboards,etc.)
Youcanndfurtherinstructionsintheoperatinginstructionsmanual
of the source container.
Handling permit