3.5
Sensor installation and measuring cable connection
Measuring cable connection
The terminal block is located in a separate
connection compartment which is accessible
by opening the plastic cover. Remove the
pre-pressed knock-outs for cable entry.
The sensor is connected via a multiple-core,
special screened cable which is completely
terminated and permanently connected. Use
a junction box, e.g. VBM to extend the
measuring cable. Termination instructions are
supplied with the measuring cables.
Note:
•
Protect cable ends and terminals
against moisture to prevent
inaccurate measurement!
•
For further information on cables
and junction boxes refer to chap.
9 Accessories.
Structure and termination of the measuring cable
Measuring cable requirements
Sensor type
Cable
Extension
Turbidity sensor CUS 31, CUS 41
Non-detachable cable
on sensor
VBM box + CYK 8
Maximum cable length
CUS 31 / CUS 41
max. 200 m using CYK 8
GN
YE
WH
BN
Screen
Com A
Com B
–U
B
+U
B
Sensor
Pin CUM 2x3
S
96
97
88
87
U_AN03E.CDR
+U
B
CYK 8
Fig. 3.13
Structure of the special
measuring cable CYK 8
Installation
Liquisys M CUM 223 / 253
14
Hauser