
Note:
• Please label the sensor terminal
block with the enclosed sticker.
• Connect the ground terminal with
PE.
Caution:
• Terminal designated as NC
may not be switched.
• Undesignated terminals
may not be switched.
Connection of field instrument
For connection, insert the measuring cables through the cable glands of the field instrument
and connect according to the wiring diagram as shown in the following figure.
Connection of panel-mounted instrument
>>
pH / Redox (Glas)
42
+++++-----
434154 55 56
NC
SRC
DRN
31
11
12
32
13
PA/PM
3433
S
REF
(Glas/IsFET)
(IsFET)
(IsFET)
NC 938685 94 81 82 NC
51 52 53 57 58 59 47 48 49
pH
Redox
Temp.
(opt.)
+15V
10mA
YE
WHRD
GN
BN
REL 4SENSOR REL 3 REL 2 REL 1
NC
Mains
Hilfsenergie
131094-4G
Digital 2
Digital 1
11 13
12
L1
+
N
-
(AC)
(DC)
Contacts:
max. 2A
AC: 250V/500VA
DC: 30V/60W
+-
23 24
4..20mA
131094F.CDR
Ground terminal for IS
Fig. 3.12
Connection compartment
sticker of field instrument
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
Contacts: max. 2A, AC:250V/500VA, 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
131081F.CDR
Ground
terminal
for IS
Fig. 3.11
Connection sticker of
panel-mounted instrument
PM253E03.CHP
Liquisys M CPM 223 / 253 Installation
Endress+Hauser 13
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