Endress+Hauser levelflex M FMP 41 C Bedienungsanleitung Seite 16

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XA 266F-A
6.2 Special conditions (X marking)
The probes (rod and rope version) of the level radar Levelflex M type FMP 41C-....... have plastic surfaces, which can become
electrostatically charged.
For areas requiring instruments of category II 1 G, II 2 G or II 1 D, 2 D, the electrostatic limits have to be observed.
Category Admissible transmitted charge Q in nC
Dusts
1 140
2 140
3
For the level radar Levelflex M type FMP 41C-.... this results in the following relationship:
Area/Components with plastic
surfaces
flange cladding
rod
rope
rope weight
Measures:
Instruments with flange cladding (plastic) may be installed in areas requiring instruments of category II 1 G or II 2 G without
further protective measures, if charging of the flange cladding is prevented by the installation (e.g. no exposed plastic
surfaces or installation in metallic connection parts/nozzles).
No special measures are necessary in areas requiring instruments of category II 1 D or II 2 D, because dangerous
propagating brush discharge are not to be expected.
7DE  FMP41C
Zone 1 - Anwendung
Temperature Maximum permitted
class with / medium temperature
without VU (process connection)
331 display Probe in Zone 1
+80 °C
T6
+60 °C
+95 °C
T5
+75 °C
+130 °C
T4
+80 °C
+150 °C
T3
1)
+80 °C
(functional)
+195 °C
T3
+80 °C
Note: permitted probe temperature range must be observed
1)
functional = limited by maximum permitted probe temperature
Note: intrinsic safety
7.) The type of protection changes as follows when the transmitter is connected to certified intrinsically-safe circuits of
Category ib for Equipment Groups IIC and IIB: EEx ib IIC T6 and EEx ib IIB T6.
Do not operate the probe in Zone 0 if the transmitter is connected to an intrinsically-safe circuit of Category Ex ib
7.1 The pertinent guidelines must be observed when intrinsically-safe circuits are connected together acc. EN 60079-14 (Proof
of Intrinsic Safety) (e.g. when using the Commubox or DXR 275 handheld terminal or other certified apparatus).
7.2 For grounding the screen, see figure 5 and figure 6.
7.3 On installations requiring an overvoltage protector to comply with national regulations or standards (e.g. EN 60079-14), the
device FMP40 shall be installed using an overvoltage protector (e.g. HAW 262 Z, HAW 562 Z from Endress+Hauser).
6
IIA IIB IIC
60 30 10
60 30 10
no limit
measured transmitted charge Q
in nC (Test Report)
< 75
< 30
< 10
< 30
Maximum permitted ambient temperature at the electronics housing (electronics housing in
FMP41C
+ 57 °C
+ 60 °C
+ 72 °C
+ 75 °C
+ 72 °C
+ 80 °C
+ 68 °C
+ 80 °C
+ 62 °C
+ 80 °C
X-marking required for the following material groups
IIA
--
--
--
Zone 1) dependent on the medium temperature
FMP41C with
remote electronics / spacer tube
+ 59 °C
+ 60 °C
+ 74 °C
+ 75 °C
+ 78 °C
+ 80 °C
+ 77 °C
+ 80 °C
+ 76 °C
+ 80 °C
Levelflex M
IIB IIC
-- IIC
-- --
-- IIC
FMP41C with
remote electronics / spacer hose
+ 60 °C
+ 60 °C
+ 75 °C
+ 75 °C
+ 80 °C
+ 80 °C
+ 80 °C
+ 80 °C
+ 80 °C
+ 80 °C
Endress+Hauser