Endress+Hauser Gammapilot M FMG60 - Measuring principle

Appendix Gammapilot M FMG60 with FOUNDATION Fieldbus
112 Endress+Hauser
11.4 Measuring principle
The radiometric measuring principle is based on the fact that gamma radiation is attenuated when
it penetrates a material. Radiometric measurement can be applied for different measuring tasks:
L00-FMG60xxx-15-00-00-xx-001
11.4.1 Level limit detection (1)
A gamma radiation source and a Gammapilot M are mounted on opposite sides of the vessel at the
height of the desired level limit. The Gammapilot M converts the received radiation intensity into
a percentage. "0%" means that the radiation path is completely free, i.e. the level is below the limit.
"100%" means that the radiation path is completely covered, i.e. the level is above the limit.
11.4.2 Continuous level measurement (2)
A gamma radiation source and a Gammapilot M are mounted on opposite sides of the vessel. The
Gammapilot M calculates the level (percentage) from the radiation intensity. Detectors of different
lengths are available to adapt the system to the measuring range. Also, multiple detectors can be
interconnected (cascading).
11.4.3 Interface measurement (3)
A gamma radiation source and a Gammapilot M are mounted on opposite sides of the vessel in a
height such that both liquids are irradiated. The radiation source may also be mounted inside the
vessel. The Gammapilot M calculates the position of the interface layer from the intensity of the
received radiation. Its value is between 0% (lowest possible position) and 100% (highest possible
position).
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Gammapilot M
Gammapilot M
Gammapilot M
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Gammapilot M
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