Principle Of Operation - Vega VEGASOURCE 84 Operating Instructions Manual

3 Product description
Application area
Functional principle
Source
12
– This operating instructions manual
– Certificate of the source (source capsule)
– If necessary, further certificates
3.2

Principle of operation

The VEGASOURCE 84 is a source holder for shielding radioactive
sources Cs-137 or Co-60.
The radioactive source in the source container emits gamma rays.
The VEGASOURCE 84 is mounted on the vessel or the pipeline
directly opposite the sensor.
The source holder shields the environment against gamma radia-
tion and protects the radioactive source from mechanical damage or
chemical influences. In case of large measuring ranges (e.g. with high
vessels) two or more source holders are used.
The VEGASOURCE 84 consists of the components:
Fig. 4: Source holder VEGASOURCE 84
1 Source holder
2 Cover (optional)
3 Transport lug
4 Mounting holder
The rays emitted by the gamma source are damped when penetrat-
ing the medium. The sensor detecting the attenuated radiation on the
opposite side of the vessel calculates the measured value from the
intensity of the radiation.
Max. activity of the sources
The following table states the max. activity of the sources. Production-
related fluctuations of the radiation activity and tolerances of the
measuring instruments are not taken into account.
1
4
VEGASOURCE 84 • Source holder
3
2