Endress+Hauser levelflex M FMP 41 C Bedienungsanleitung Seite 12

~
XA 266F-A
Zone 1 or
Zone 22,
Rod or
rope probe
Electronic insert
6.2
Tank
danger
area
Zone 0 or
Zone 20
Figure 1
Metal housing*
6.2
Potential matching line
Tank
danger
area
Zone 0 or
Zone 20
Figure 2
2
Explosion-hazardous area
Option: (ATEX-certified)
-Remote Display FHX40
-Service Interface
Electronic insert
6.2
Tank
danger
area
Zone 1, or
Zone 21
local potential matching system
Installation with overvoltage protector
Explosion-hazardous area
Separate housing with
≤1000 mm *
overvoltage protector
e.g. HAW 262 Z
Metal housing*
e.g. armoured hose *
2 1
2
1
PAL
PAL connection
connection
Potential matching system
EX
EX
4..20 mA HART
Power supply
or switching unit
Cable with
screening or
metal sheath
* Requirement as per EN60079-14 for intrinsically-safe circuits in Zone 0,
if there is a risk of dangerous potential differences within Zone 0,
e.g. through the occurrence of atmospheric electricity.
Non-explosion-hazardous area
Associated intrinsically-safe
apparatus [EEx ia] IIC
Non-explosion-hazardous area
Levelflex M
XA266F-A
XA266F-A
Endress+Hauser