Wiring
Liquisys M CPM223/253
18
Hauser
!
Note!
• The device is approved for protection class II and is generally operated without a protective earth
connection.
• To guarantee measuring stability and functional safety, you have to ground the outer screen of the
sensor cable:
– Glass electrodes (PR/PS device version): terminal "S"
– ISFET sensors (IS device version): PE distributor rail
This is on the cover frame for panel-mounted instruments and in the connection compartment
for field devices.
• Ground the PE distributor rail or the ground terminal.
Field instrument connection
Guide the measuring cables through the PG glands into the housing. Connect the measuring cables
in accordance with the terminal assignment (
Fig. 12).
C07-CPM253xx-04-06-00-xx-002.eps
Fig. 12:
Field instrument connection compartment sticker
1
PE distributor rail for IS device version
Panel-mounted instrument connection
C07-CPM223xx-04-06-00-xx-003.eps
Fig. 13:
Panel-mounted instrument connection sticker
1
Ground terminal for IS device version
pH
/
R
edox
(Glas)
42
+
+
+
+
+
-
-
-
-
-
43
41
54 55 56
NC
SRC
DRN
31
11
12
32
13
PA
/P
M
34
33
S
REF
(Glas/IsFET)
(IsFET)
(IsFET)
NC
93
86
85
94 81 82
NC
51 52 53 57 58 59 47 48 49
pH
Redox
T
emp.
(opt.)
+15V
10mA
YE
WH
RD
GN
BN
REL 4
SENSOR
REL 3
REL 2
REL 1
NC
Mains
Hilfsenergie
131094-4G
Digit
al
2
Digit
al
1
11 13
12
L1
+
N
-
(AC)
(DC)
Contacts:
max. 2A
AC: 250V/500VA
DC: 30V/60W
+
-
23 24
4..20mA
1
BNC: pH/Redox + REF
31 +
Sensor
32 -
33 +
34 -
85 +
86 -
93 +
94 -
42
81 +
43
82 -
41
pH
Redox
Temp.
(opt.)
+15V
10mA
Digital 2
Digital 1
NC
NC
NC
131081-4E
S
REF
PA/PM
12
13
11
YE
WH
GN
RD
BN
SRC (IsFET)
(Glass)
IsFET
Glass
(
)
DRN
Mains
Cont
act
s
:
max.
2A,
AC:250V/500V
A,
DC:30V/60W
L1
+
AC DC
N
-
REL1
REL2
REL3
REL4
4..20mA
24
23
49
COM
COM
COM
COM
-
+
59
54
55
56
52
51
53
58
57
48
47
131084-4C
BNC: pH/Redox + REF
31 +
Sensor
32 -
33 +
34 -
85 +
86 -
93 +
94 -
42
81 +
43
82 -
41
pH
Redox
Temp.
(opt.)
+15V
10mA
Digital 2
Digital 1
NC
NC
NC
131081-4E
S
REF
PA/PM
12
13
11
YE
WH
GN
RD
BN
SRC (IsFET)
(Glass)
IsFET
Glass
(
)
DRN
Mains
Cont
act
s
:
max.
2A,
AC:250V/500V
A,
DC:30V/60W
L1
+
AC DC
N
-
REL1
REL2
REL3
REL4
4..20mA
24
23
49
COM
COM
COM
COM
-
+
59
54
55
56
52
51
53
58
57
48
47
131084-4C
1