Endress+Hauser levelflex M FMP 41 C Bedienungsanleitung Seite 14

XA 262F-A
Tab. 2b
Option:
Power supply and signal circuit for remote display, e.g. FHX40, in protection type: intrinsic safety EEx ia IIC or IIB
Uo = 4.2 V
Io = 34 mA
Po = 36 mW
for connecting the Commubox service interface with the associated ToF cable:
Commubox output + ToF cable:
Uo = 3.74 V
Io = 9.9 mA
Po = 9.2 mW
When interconnected to a Levelflex M, the following results apply:
for material group:
IIC
IIB
Zone 0 Safety Instructions:
8.) In Zone 0, potentially explosive air/vapour mixtures must only occur under atmospheric conditions:
-20° C
0.8 bar
If no potentially explosive mixtures are present, or if additional protective measures have been taken according to EN1127-1,
the transmitters may be operated under other atmospheric conditions in accordance with the manufacturer's specifications.
9.) Only install the devices in media for which the wetted materials have sufficient durability.
10.) Associated apparatus with galvanic isolation between intrinsically-safe and non-intrinsically-safe circuits are preferred.
Tab. 3 FMP 41C
Zone 0 - Application
Temperature class Maximum permitted medium
with / without VU 331
display
T6
T5
T4, T3, T2, T1
XA 262F-A/00/en/05.04
52022004
FM+SGML 6.0
effective inner inductance
effective inner capacitance
Characteristic curve: linear
effective inner inductance
effective inner capacitance
for material group IIC: permitted outer inductance
Lo = 0.15 mH
≤ 8 µF
Co
Co
< T < +60° C
< p < 1.1 bar
temperature
(process connection)
Probe in Zone 0
(see point 8)
+60 °C
+60 °C
+60 °C
Li = negligible
Ci = negligible
Li = negligible
Ci = negligible
permitted outer capacitance
0.5 mH
≤ 7 µF
Maximum permitted ambient temperature at the electronics housing (electronics
housing in Zone 1) dependent on the medium temperature
FMP41C
60 °C
75 °C
80 °C
Characteristic curve: linear
Lo ≤ 340 mH
Co ≤ 100 µF
1 mH 2 mH
≤ 5.5 µF ≤ 5 µF
10 µF
FMP41C with FMP41C FMP41C with
remote electronics / remote electronics /
spacer tube
60 °C
75 °C
80 °C
Levelflex M
5 mH
≤ 4 µF
spacer hose
60 °C
75 °C
80 °C
52022004