YOKOGAWA PH202G (S), User Manual

Page: 44 / 138

IM 12B07D02-01E
Installation and wiring 3-11
3-6-3. Sensor cable connections using junction box (BA10) and extension cable (WF10)
For the WTB10 terminal box, see APPENDIX.
Where a convenient installation is not possible using the standard cables between sensors and transmit-
ter, a junction box and extension cable 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 neces-
sary to ensure that the specifications of the system are not compromised. The total cable length should
not exceed 50 metres (e.g. 5 m fixed cable and 45 m extension cable). In the 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).
17 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 14 Screen
Brown Co-axial Cable
14 (screen)
17 (overall screen)
12 (blue)
11 (red)
13 (core)
16 (screen)
15 (core)
Co-axial cable
(white)
Co-axial cable
(brown)
WF10 Cable
EXA pH TRANSMITTER / CONVERTER
11
12
13
14
15
16
17
11
12
13
14
15
16
17
Fig. 3-11. Connection of WF10 extension cable and BA10/BP10 junction box
NOTE
: See page 3-12 for termination for WF10 cable in combination with EXA pH.
3-6-4. Connection VP type sensor
>
Connect ions normal pH
A-15
B-13
C-
D-14
E-11
F-12
S-3 or 63
pH
ref
LE
temp
>
Connections differential pH
A-15
B-14
C-13
D-17
E-11
F-12
S-3 or 63
pH
pH ref LE
temp