Endress+Hauser nivotester FTW 520 Z Sicherheitshinweise Seite 8

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XA 120F-A
Explosion hazardous area
Zone 0
Approved level
limit switch
U
0
I
0
2
Non-hazardous area
Short-circuit jumper
MAX
13 12
MIN/MAX selection
control circuit
(intrinsically safe)
Power supply
(AC)
PE
L1 N
1 2 3
Power supply
X X 9
1.
Probe
Not used input circuit
(intrinsically safe)
Relay (limit alarm)
4 5
External load
Nivotester
8 7
2.
6
Endress+Hauser