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Figure 5.2 – Coal level inside the unit case
5.5 Radioactive source replacement
WARNING!
The beta-source should be replaced with a new one when its lifetime specified in
the certificate (Appendix A) is expired.
This procedure should be fulfilled by the specially trained personnel at the
manufacturer facility or authorized service center.
5.6 Instrument decontamination
The protective treatment includes external examination of the instrument, dust and dirt removal,
and decontamination if the instrument is contaminated with radioactive substances.
To decontaminate the instrument wipe its surface with a piece of soft cloth wetted with rectified
ethanol (~ 50 ml).
