Connecting - Siemens SITRANS T Series Operating Instructions Manual

Connecting

Connecting device in energized state
Danger of explosion in hazardous areas.
• Connect devices in hazardous areas only in a de-energized state.
Exceptions:
• Circuits of limited energy may also be connected in the energized state in hazardous
• Exceptions for type of protection "Non-sparking nA" (Zone 2) are regulated in the
Note
Improvement of interference immunity
• Lay signal cables separate from cables with voltages > 60 V.
• Use cables with twisted wires.
• Keep device and cables distant to strong electromagnetic fields.
• Use cables with wires that have a maximum cross-sectional area of 2.5 mm
NOTICE
Ambient temperature too high
Damage to cable sheath.
• At an ambient temperature ≥ 60 °C (140 °F), use heat-resistant cables suitable for an
SITRANS TH200/TH300
Operating Instructions, 08/2015, A5E00393069-04
WARNING
areas.
relevant certificate
ambient temperature at least 20 °C (36 °F) higher.
5
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2
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