Endress+Hauser Gammapilot M FMG60 - Safety instructions; Installation, commissioning, operation; Hazardous area

Gammapilot M
4 Endress+Hauser
General information
!
Note!
General information about functional safety (SIL) is available at www.endress.com/SIL and in the
competence brochure CP00002Z "Functional safety in the Process Industry - risk reduction with Safety
Instrumented Systems".
Structure of measuring system with Gammapilot M FMG60
Level limit measuring system
The following diagram shows an example of the measuring system in use.
SD230xx01
Point level detection The measuring system consists of a sensor and a gamma radiation source.
Point level detection takes place when a guided gamma ray is interrupted or attenuated by the medium which
is being monitored and this interruption or attenuation is detected.
Typical measurement setup:
SD230en02
In the transmitter (Gammapilot M), an analog signal (4 to 20 mA) proportional to the level is generated.
This signal is sent to a logic unit located downstream from the transmitter (e.g. PLC, limit signal transmitter)
and is monitored there to ensure it does not exceed a maximum value.
An individual gamma radiation source is recommended for each point level detection. The path of the beam
should be adapted to the dimension of the measuring length used.
When using multiple detectors with 1oo2 or 2oo3 votings, the height of the detector arrangement with regard
to the switch point must also be taken into account.
Gammapilot MGammapilot M
Gammapilot MGammapilot M
Gamma
radiation
source
Gamma
radiation
source
Useful beam Useful beam
interrupted
Medium
Tank
Medium
Tank
Signal
“full”
Signal
“empty”