Fm/Csa; Eu Equivalency - Siemens Sitrans Probe LR Operating Instructions Manual

FM/CSA

• Approved dust-tight and water-tight conduit seals are required for outdoor
NEMA 4X / type 4X / NEMA 6, IP67, IP68 locations.
• The maximum voltage of the non-intrinsically safe apparatus must not exceed 250 V rms.
• Recommended intrinsically safe barriers are listed on page 102.
Hazardous Area
load
4 – 20
mA
Zone 0, 1 or 2

EU Equivalency

Any zener diode safety barrier, certified by an EU approved certification body to [ EEx ia ]
IIC, its output voltage (U
resistance (R ); such that I
o
Notes
• The electrical circuit in the hazardous area must be capable of withstanding an AC
test voltage of 500 V rms to earth or frame of the apparatus for one minute.
• The installation must comply with national requirements.
• The safe area is unspecified except that it must not be supplied from nor contain,
under normal or abnormal conditions, a source of potential with respect to earth in
excess of 250 V rms or 250 V DC.
7ML19985HR02
Non-hazardous Area
EEx ia
Certified Barrier
2
) not exceeding 30 V and its output current (I
o
= U / R , does not exceed 120 mA.
o o o
SITRANS Probe LR – INSTRUCTION MANUAL
2
PLC (active)
HART handheld
Communicator
) limited by load
o
Page 101