Siemens SITRANS F series Betriebsanleitung Seite 22

Connecting
3.1 Safety notes for connecting
20
DANGER
Explosion Hazard
"Flameproof enclosure" type of protection
Only open devices with type of protection "Flameproof enclosure" (e.g. FUT1010 NEMA
7) in hazardous areas when the power to the device is turned off, otherwise there is a
risk of explosion.
DANGER
Explosion Hazard
Hazardous areas
Observe the type examination certificates or the test certifications applicable in your
country if you use transmitters as category 1/2 equipment, otherwise there is a risk of
explosion.
DANGER
Explosion Hazard
Intrinsically safe circuits
If a non-conforming supply unit is used, the "fail-safe" type of protection will no longer be
effective and the approval certification will be invalid, otherwise there is a risk of
explosion.
With intrinsically safe circuits, use only certified meters appropriate for the transmitter.
DANGER
Explosion Hazard
Laying Cables
Cable for use in zone 1 and 2 must satisfy the requirements for having a proof voltage <
AC 500 V applied between the conductor/ground, conductor/shield and shield/ground,
otherwise there is a risk of explosion.
Connect the devices that are operated in hazardous areas as per the stipulations
applicable in the country of operation, e.g. for Ex "d" and "nA", permanent cables must
be laid.
FUS1010 IP65 NEMA 4X & IP66 NEMA 7 Quick Start
Operating Instructions, 07/2014, A5E03086486-AD