5
Assembly Instructions
enCore FC1
Operating Instructions
Page 67 of 97
5.4.15 Gas Meter (Turbine) SMRI Bi-directional: 2 HF Sensors,
Flow Direction Detection (EEx i) via MFE7 Board
Hazardous Area
Safe Area
enCore device
MFE7 board
D1+
Turbine SMRI bi:
2 HF and 2 MF
sensors
24V 0V
(1): Isolated
pulse amplifier
(active output)
SH
GND
D3+
D2+
MF1
MF2
HF2
HF1
(1)
(2)
(1)
(2): Flow dir
monitor, e.g.
KFU8-UFT-Ex2.D
(active output)
Fig. 5-20: Interface for turbine meter type SMRI bi:
2 HF and 2 MF sensors (EEx i), flow direction detection external via MFE7
Characteristics:
•
two galvanically isolated input safe circuits for HF- or LF pulse
sensor;
Passive isolated pulse amplifier integrated in the inputs
•
a galvanically isolated input safe circuit for the direction signal;
a passive isolated pulse amplifier integrated in the inputs
•
maximum load:
24 V DC
6 mA