Yokogawa EXAxt PH450 4-Wire Analyzer for pH and ORP - Manual (Page 25)

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
13
14
14
16
15
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