Siemens SITRANS F US Operating Instructions Manual page 16

In devices with protection type
be separated from non-intrinsically safe circuits by certified safety isolators or barriers.
For reliable communication via HART-protocol at least one load of 230 Ω must be available in
the signal circuit.
The FUS060 enclosure must be connected with an earth wire to the PE connector - see note
in figure above.
Warning
• Ex-version: According to the "Ex-requirements", the 'PE-terminals' on FUS060 and on sensors
•
• If device is energized (power supply, digital outputs in the case of external feeding), housing
• Lid over terminals for power supply may not be removed! Use only certified measuring
16
Lid of
terminal
box
Connection
Connection diagram
(SONO3200 transducers or SONO 3300 sensor) must be
The PE-terminals should always be connected to solve EMC problems (Ex-Version on non Ex).
covers may not be unscrewed in areas where there is a risk of explosion.
instruments!
SFIDK.PS.029.E5.02 / SW 2.01.07
ATEX II 2G Ex dem [ia/ib] T6..T3,
Cable gland
PE connector - between the
cable glands (please connect
this PE connector)
intrinsically safe circuits must
potential equalised (min. 4 mm
2
).