Safety Instructions: Zone 0; Temperature Tables; Connection Data - Endress+Hauser Levelflex FMP50 Safety Instructions

Levelflex FMP50/51/52/53/54/55

Safety instructions: Zone 0

Temperature tables

Connection data

Endress+Hauser
Intrinsic safety
The device can be connected to the Endress+Hauser FXA291 service tool: refer to the Operating
Instructions.
Potential equalization
Integrate the device into the local potential equalization.
• 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, the device may also be operated under non-atmospheric conditions in accordance with the
manufacturer' s specifications.
→  38
Connection compartment Ex db
Basic specification, Position 3 (Power Supply, Output) = A
Terminal 1 (+), 2 (–)
Power supply:
U = 35 V
N DC
U = 250 V
m
I = 22 mA
max
Basic specification, Position 3 (Power Supply, Output) = B
The power consumption of I/O modules with passive PFS output can be limited for certain
applications.
• Recommended: Power consumption = 1 W. This is obtained for a supply voltage at the terminals of
27 V .
DC
• For higher supply voltages (U
consumption, see table below.
Table for the PFS serial resitance (R
Power consumption
Total power consumption
Internal resistance R
I
): Insert a serial resistance (R
max
):
V
1.0 W
1.88 W
760 Ω
XA00499F-F
) in order to limit the power
V
21