Endress+Hauser Gammapilot FMG50 - 1 About this document; 1.1 Document Function; 1.2 Symbols Used

Gammapilot FMG50
8 Endress+Hauser
2
1
1
A0038167
1 Gammapilot (2 pcs)
2 Interface measurement
Measurement of mass flow (solids)
Bulk solids applications on conveyor belts and conveyor screws.
The source container is positioned above the conveyor belt and the Gammapilot FMG50 below the
conveyor belt. The radiation is attenuated by the medium on the conveyor belt. The intensity of the
radiation received is proportional to the density of the medium. The mass flow is calculated from the
belt speed and the radiation intensity.
1
A0036637
1 Gammapilot FMG50
Measuring system
A radiometric measuring system typically consists of the following components:
Radiation source
A
137
Cs or
60
Co source acts as the radiation source. Radiation sources with different activities are
available to adapt the system to the specific application. The "Applicator" selection and configuration
program can be used to calculate the required activity
1)
. For additional information on the radiation
source, refer to TI00439F.
Alternatively, radiation sources with other decay constants can also be used. The decay time
can be defined as between 1 and 65536 days. Decay times for other isotopes can be found in
the "NIST Standard Reference Database 120", see:
https://www.nist.gov/pml/radionuclide-half-life-measurements/radionuclide-half-life-
measurements-data
Source container
The radiation source is enclosed in a source container, which allows the radiation to be emitted only
in one direction and screens it off in any other direction. The radiation is absorbed in all directions
when the source container is closed. The source container is opened during commissioning and the
radiation is emitted at a defined angle. This reduces the area of radioactive radiation to the
minimum required to irradiate the active part of the Gammapilot FMG50. Source containers are
available in different sizes and with different angles of emission. The "Applicator"
1)
program can be
used to select the source container that suits your application. For additional information on source
containers, refer to Technical Information TI00445F (FQG60), TI00435F (FQG61, FQG62),
TI00446F (FQG63) and TI01171F (FQG66).
1) The "Applicator" CD-ROM is available from your E+H sales organization