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Instruction Manual
!
WARNING
When the unit is installed in a hazardous area (zone 2), the
housing must at least feature degree of protection IP 54 according
to IEC 529.
Electrical connection
2.2
!
WARNING
The applicable national regulations must be observed during
electrical installation, in explosion hazard areas particularly
-
the regulations governing electrical installations in explosion
hazard rooms (Elex V),
-
the regulations for the erection of electrical installations in
explosion hazard areas (VDE 0165) and
-
the conformity certification.
Check whether the available auxiliary power agrees with the
value stated on the rating plate.
D For details of how to connect the sensor, see Figure 6, page 47 "Sensor pin
assignments".
D Auxiliary power
Connect the wires of the auxiliary power supply to the ''+'' and ''--'' terminals,
paying attention to the polarity (the unit is protected against polarity reversal).
D Connecting cable
Max. cable cross-section 2.5 mm
Lay signal cables separately from cables carrying voltages >60 V.
Use cables with twisted wires.
Avoid the proximity of large electrical installations or use shielded cables. The
full specification according to HART
shielded cables.
SITRANS TK/TK-H
C79000-B7174-C12-07
7NG3120, 7NG3121, 7NG3122
2
2
(0.003875 in
).
â
, Version 5.7 can only be met when using
45
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