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OPM223/253
!
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. 10).
Fig. 10:
1
PE distributor rail for IS device version
Panel-mounted instrument connection
Fig. 11:
1
Ground terminal for IS device version
SENSOR
REL 4
RD
WH
BN
54 55 56
DRN
12
NC
31
32
+
SRC
11
13
S
GN
YE
12
11 13
Field instrument connection compartment sticker
131084-4C
131084-4C
REL1
REL1
COM
COM
REL2
REL2
COM
COM
REL3
REL3
COM
COM
REL4
REL4
COM
COM
-
-
4..20mA
4..20mA
+
+
Panel-mounted instrument connection sticker
REL 3
REL 2
REL 1
51 52 53 57 58 59 47 48 49
41
33
34
NC
85
86
93
94 81 82
-
+
-
+
-
+
-
+
-
131081-4E
131081-4E
BNC: pH/Redox + REF
BNC: pH/Redox + REF
49
49
47
47
31 +
31 +
pH
pH
Redox
Redox
48
48
32 -
32 -
59
59
33 +
33 +
1
Temp.
Temp.
(opt.)
(opt.)
57
57
34 -
34 -
58
58
NC
NC
53
53
85 +
85 +
+15V
+15V
10mA
10mA
51
51
86 -
86 -
52
52
93 +
93 +
Digital 2
Digital 2
56
56
94 -
94 -
54
54
81 +
81 +
Digital 1
Digital 1
55
55
82 -
82 -
24
24
NC
NC
23
23
NC
NC
Contacts:
max. 2A
AC: 250V/500VA
DC: 30V/60W
42
43
Mains
Hilfsenergie
NC
(AC)
23 24
NC
L1
N
+
-
+
-
(DC)
1
131094-4G
C07-OPM253xx-04-06-00-xx-002.eps
Sensor
Sensor
(Glass)
(Glass)
(
(
IsFET
IsFET
)
)
REF
REF
Glass
Glass
PA/PM
PA/PM
BN
BN
YE
YE
13
13
12
12
WH
WH
11
11
GN
GN
SRC (IsFET)
SRC (IsFET)
DRN
DRN
RD
RD
S
S
42
42
43
43
41
41
AC DC
AC DC
L1
L1
+
+
N
N
-
-
C07-OPM223xx-04-06-00-xx-003.eps
Wiring
17
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