Endress+Hauser gammapilot FTG 671, Operating Instructions Manual

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1.1 Application
The Gammapilot FTG 671 is designed as a
•
non-contact, level limit switch
for containers (mixers, reactors, hoppers, silos, tanks) e.g. with inflammable, poisonous
and aggressive bulk material and liquids. It is also suitable for applications in the food
processing industry, e.g. on product filling lines.
Gammapilot transmitters may also be used for applications in explosion hazardous
areas, e.g. in acid tanks, boilers, cement silos, etc., and possess intrinsically-safe sensor
circuits conforming to EEx ib IIC. A list of certificated combinations is to be found in
»Notes on Safety« preceding this chapter.
Min./max.
relays
Gammapilot
FTG 671
transmitter
BA082E01
Source
Detector
Alarm relay
Fig. 1.1:
Standard application showing
Gammapilot FTG 671, source
and detector
Maximum
level
detection
BA082E02
Minimum
level
detection
Fig. 1.2:
Left:
Conveying limestone
Gamma radiation barriers control
the drying process
Right:
Automatic filling of beer barrels
The level is checked as the
barrels move past the barrier
FTG 671
Vibration
channel
Feed rate
1 barrel/2s
Full move forward
Half full are
rejected
BA082E03
FTG 671 Filling
station
Gammapilot FTG 671 Chapter 1: Introduction
6