Endress+Hauser Cerabar S PMC71 Sicherheitshinweise Seite 10

KEMA 03 ATEX 1561 / XA00253P-D
Safety instructions:
Installation
Safety instructions:
Zone 0
Safety instructions:
Zone 20/21
10
A
B
å 1
A Zone 1, Zone 21
B Zone 0, Zone 20
C Power supply
D Electronic
E Process
1 Certified associated apparatus
2 PMC71, PMP71, PMP72, PMP75
• Comply with the installation and safety instructions in the Operating Instructions.
• Install the device according to the manufacturer's instructions and any other valid standards and regulations.
• Only install the devices in media for which the wetted materials have sufficient durability.
• The device is designed for operation in Zone 21 or Zone 1 (housing) as well as Zone 20 or Zone 0 (process
connection). Its suitability in the event of potentially explosive gas-air and dust-air mixtures occurring simul-
taneously requires further assessment.
• The type of protection changes as follows when the devices are connected to certified intrinsically safe
circuits of Category ib: Ex ib IIC T6 or Ex ib IIB T4.
When connecting an intrinsically safe ib circuit, do not operate the sensor at Zone 0.
• The intrinsically safe input power circuit of the device is isolated from ground potential and has a dielectric
strength of at least 500 V
rms
the dielectric strength is min. 290 V
• After aligning (rotating) the housing, retighten the fixing screw.
• Avoid impact or friction sparks for light metal flanges or flange faces (e.g. titanium, zirconium).
• Only operate devices in potentially explosive vapour/air mixtures under atmospheric conditions:
–20 °C  T +60 °C
0.8 bar p 1.1 bar
• If no potentially explosive mixtures are present, or if additional protective measures have been taken,
according to EN 1127-1, the transmitters may be operated under other atmospheric conditions in
accordance with the manufacturer's specifications.
• Associated apparatus with galvanic isolation between the intrinsically safe and non-intrinsically safe circuits
are preferred.
For PMC71, the following also applies:
• On installations requiring overvoltage protection to comply with national regulations or standards (e.g.
EN 60079-14), this device shall be installed using an overvoltage protector (e.g. HAW262Z, HAW562Z from
Endress+Hauser).
• Seal the cable entry or piping tight (see housing ingress protection in the table).
• Only use cable glands which are suited for dust-Ex protection: e.g. with ATEX/IECEx Ex t approval or
ATEX/IECEx Ex e approval (min. IP65 ingress protection). Lay connecting cable and secure.
C
D
E
with respect to it. For devices with integrated overvoltage protection (optional),
to earth.
rms
Cerabar S
1
2
DruckS_05
Endress+Hauser