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IM 12D7B3-E-H
Installation and wiring 3-7
3-7-1. Sensor cable connections using junction box (BA10) and extension cable (WF10)
Where a convenient installation is not possible using the standard cables between sensors and transmitter,
a junction box and extension cable may be used. The Yokogawa BA10 junction box and the WF10 exten-
sion cable should be used. These items are manufactured to a very high standard and are necessary to
ensure that the specifications of the system are not compromised. The total cable length should not exceed
60 metres (e.g. 5 m fixed cable and 55 m extension cable).
3-7. Other sensor systems
To connect other sensor systems, follow the general pattern of the terminal connections as listed below:
11 and 12
: Always used for temperature compensation resistor input.
13 and 14
: Normally used for the outer electrode
15 and 16
: Used for inner electrode
In case a 4-electrode measuring system will be used, 14 and 16 should be used for the current electrodes.
Please ensure that shielded cabling will be used.
In figure 3-10 this is shown in a schematic way.
Figure 3-10. Connection diagram for other sensors
Figure 3-11. Terminal identification label
11
12 13 14 15 16
t
11
12 13 14 15 16
t
11 12
14
13
15 16
+ -
+ -
G
HART
SUPPLY
SENSOR
2-electrode configuration
4-electrode configuration
Содержание SC202G(S)
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