Owner manual

17
IM 12B07C05-01E
3 INSTALLATIONANDWIRING
3-7-3. Sensor cable connections using junc-
tion box (BA10) and extension cable
(WF10)
Where a convenient installation is not possible
using the standard cables between sensors
and converter, a junction box and extension ca-
ble may be used. The Yokogawa BA10 junction
boxandtheWF10extensioncableshouldbe
used. These items are manufactured to a very
high standard and are necessary to ensure that
the specifications of the system can be met.
The total cable length should not exceed 60
metres (e.g. 5 m fixed cable and 55 m exten-
sion cable). In case of systems using dual high
impedance sensors (e.g. Pfaudler 18), then the
cable length is restricted to 20 metres (fixed
cableonly,noextensionwithWF10).
14 Overall Screen
11
12
12
13
14
14 16
15
1314141615
17
11
17
11 Red
12 Blue
15 Core 16 Screen
White Co-axial cable
13 Core 17 Screen
Brown Co-axial Cable
17 (screen)
14 (overall screen)
12 (blue)
11 (red)
13 (core)
16 (screen)
15 (core)
Co-axial cable
(white)
Co-axial cable
(brown)
11
12
13
14
15
16
17
11
12
13
14
15
16
17
BA10 WF10 EXA pH TRANSMITTER
/ CONVERTER
Figure 3-12. Connection of WF10 extension cable and BA10 junction box