Endress+Hauser FMR230 Handbuch Seite 12

PTB 00 ATEX 2118 / XA207F-D
Safety instructions:
Zone 0
12
Tab. 2a
Power supply and signal circuit in protection type: intrinsic safety Ex ia IIC or IIB
Only for connection to a certified intrinsically safe circuit with the following maximum values:
Ui = 30 V
Ii = 273 mA
Pi = 1 W
Tab. 2b
Option (only for service purposes)
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 Micropilot M, the following results apply:
for material group: Lo =
IIC Co
IIB Co
• 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 EN1127-1, the transmitters may be operated under other atmospheric conditions in accordance
with the manufacturer's specifications.
• Only install the devices in media for which the wetted materials have sufficient durability.
• The integrated overvoltage protector meets the requirements as per IEC/EN 60079-14 Section 12.3.
• The electrical apparatus must be integrated into the local potential equalisation (PML).
• Associated apparatus with galvanic isolation between the intrinsically safe and non-intrinsically safe circuits
are preferred.
Zone 0 - Application
Tab. 3
Temperature class Maximum permitted
with/without medium temperature
VU331 display Antenna in Zone 0 *
T6 +60 °C
T5 +60 °C
T4, T3, T2, T1 +60 °C
effective inner inductance
effective inner capacitance
effective inner inductance
effective inner capacitance
Characteristic curve: linear
for material group IIC:
permitted outer inductance
permitted outer capacitance
0.15 mH 0.5 mH
≤ 8 μF ≤ 7 μF
Maximum permitted ambient temperature (at the electronics housing /
electronics housing in Zone 1) dependent on the medium temperature
2
FMR230
+60 °C
+75 °C
+80 °C
Li = negligible
Ci = 13 nF
Li = negligible
Ci = negligible
Lo ≤ 340 mH
Co ≤ 100 μF
1 mH 2 mH
≤ 5.5 μF ≤ 5 μF
10 μF
FMR231 FMR240
+60 °C
+75 °C
+80 °C
Endress+Hauser
Micropilot M
5 mH
≤ 4 μF
2
:
+60 °C
+75 °C
+80 °C