6
Assembly Instructions
enCore FC
Operating Instructions
Page 59 of 120
6.4.4 Analog Measurement Transmitter (EEx i) via ExMFE5 Board
Hazardous Area
Safe Area
enCore device
ExMFE5 board
P+
SH
Analog pressure
transmitter
4...20 mA, EEx i
P−
Fig. 6-9: analog pressure transmitter (EEx i) via ExMFE5 – example
Characteristics ExMFE5:
•
intrinsically safe, galvanically isolated input safe circuits of the
category [Ex ib Gb] II C for transmitter with 4 ... 20mA interface
•
active signal converter integrated of the category “associated
electrical equipment”
according to EN50020 in input:
− open-curcuit voltage:
approx. 18 V
− voltage at 20mA:
approx. 10.6 V
− max. load:
300 Ω
•
max. measurement error:
±0.05 % of the measurement
(in the measuring range 4 to 20 mA and between 0 to +40 °C
ambient temperature)
•
max. cable length:
500 m
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