Overvoltage Protection; Safety Instructions: Zone; Temperature Tables; Connection Data - Endress+Hauser Micropilot FMR50 Sicherheitshandbuch

Micropilot
Safety instructions:
Zone 0

Temperature tables

Connection data

Overvoltage protection

• If an overvoltage protection according to IEC/EN 60079-14 against atmospheric over voltages is
required: no other circuits may leave the housing during normal operation without additional
measures.
• For installations which require overvoltage protection to comply with national regulations or
standards (e.g. IEC/EN 60079-14), install the device using overvoltage protection (e.g. HAW56x
from Endress+Hauser).
• Observe the safety instructions of the overvoltage protection.
• In the event of potentially explosive vapor/air mixtures, only operate the device under atmospheric
conditions.
– Temperature: –20 to +60 °C
– Pressure: 80 to 110 kPA (0.8 to 1.1 bar)
– Air with normal oxygen content, usually 21 % (V/V)
If no potentially explosive mixtures are present, or if additional protective measures have been taken
according to EN 1127-1, the device may also be operated under non-atmospheric conditions in
accordance with the manufacturer' s specifications.
• Associated devices with galvanic isolation between the intrinsically safe and non-intrinsically safe
circuits are preferred.
• If there is a risk of dangerous potential differences within Zone 0 (e.g. through the occurrence of
atmospheric electricity), implement suitable measures for intrinsically safe circuits in Zone 0 (e.g. in
accordance with the requirements of IEC/EN 60079-14).
→  35
Basic specification, Position 1, 2 (Approval) = B4, I4
Ex ia
• Power supply and signal circuit with protection type: intrinsic safety Ex ia IIC or IIB
Basic specification, Position 3 (Power Supply; Output) = E, G
Terminal 1 (+), 2 (–)
FISCO: Entity:
U = 17.5 V U = 30 V
i i
300 mA
I = 550 mA I
i i
P = 5.5 W P = 1.2 W
i i
effective inner inductance L = 10 μH
i
effective inner capacitance C = 5 nF
i
Service interface (CDI)
Taking the following values into consideration, the device can be connected to the certified
Endress+Hauser FXA291 service tool or a similar interface:
Service interface
U = 7.3 V
i
effective inner inductance L = negligible
i
effective inner capacitance C = negligible
i
U = 7.3 V
o
I = 100 mA
o
P = 160 mW
o
L (mH) = 5.00 2.00 1.00
o
C (μF) = 0.73 1.20 1.60
o
Terminal 3 (+), 4 (–)
Switch output (PFS):
U = 30 V
i
I = 300 mA
i
P = 1 W
i
effective inner inductance L
effective inner capacitance C
effective inner capacitance to ground C
0.50 0.20 0.10 0.05
2.00 2.60 3.20 4.00
XA00689F-A
TRC [26]
= 0 mH
i
= 3 nF
i
= 5.28 nF
i
0.02 0.01 0.005 0.002
5.50 7.30 10.00 12.70
0.001
12.70
21