6 Assembly Instructions
6.4.11 HART Measurement Transmitter (EEx i) via MFE7 Board
(barrier in sink mode)
Hazardous Area Safe Area enCore device
MFE7 board
A1+ or A2+
A1− or A2−
SH
Isolated current
repeater barrier
(HART compatible,
sink mode)
HART pressure
transmitter, EEx i
HART temperature
transmitter, EEx i
HART
communicator
+
−
(so urce mode)
Fig. 6-16: HART pressure and temperature transmitter (EEx i) via MFE7 – example
Characteristics MFE7:
• a galvanically isolated input safe circuit for a transmitter with HART
interface
− open-circuit voltage: approx. 21 V
− voltage at 20 mA: approx. 12.6 V
− max. load: 600 Ω
• protocol converter integrated in input:
max. 4 transmitters:
thereof max. 1 transmitter in burst mode
15,
16
15
Up to and including basic system version 03-24, you could use either up to
4 × t
ransmitters in multidrop mode or 1 × transmitters in burst mode.
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