Remote core processor with remote sensor installation (model code B or
E)
Figure 1-3:
The transmitter, core processor, and sensor are all mounted separately. The 4-wire connection between
the transmitter and core processor must be field wired. The 9-wire connection between the core processor
and the sensor must be field wired. Power supply and I/O must be field wired to the transmitter. This
configuration is sometimes called double-hop.
SENSOR
ZERO
STA
TUS
OUTPUTS
SUPP
L
Y
24 VDC
+
A
-
2
1 2
2
2
3
24
31
32
33
34
1
1
12
1
3
14
+ B -
+ C -
A4B5 B
B
A - +
4
3 2 1
A
B
C
E
F
D
A. Transmitter
B. Field-wired 4-wire connection
C. Junction box
D. Sensor
E. Core processor
F. Field-wired 9-wire connection
1.3 Maximum cable lengths between sensor and
transmitter
The maximum cable length between the sensor and transmitter that are separately
installed is determined by cable type.
Maximum cable lengths between sensor and transmitterTable 1-2:
Cable type Wire gauge Maximum length
Micro Motion 4-wire Not applicable • 1000 ft (300 m) without Ex-
approval
• 500 ft (150 m) with IIC rat-
ed sensors
• 1000 ft (300 m) with IIB rat-
ed sensors
Micro Motion 9-wire Not applicable 60 ft (20 m)
User-supplied 4-wire VDC 22 AWG (0.35 mm
2
) 300 ft (90 m)
Planning
Installation Manual 3
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