Endress+Hauser Liquisys M CLM223/253 User manual

Products Solutions Services
BA193C/07/EN/14.13
71212629
valid as of:
software version 2.33
Operating Instructions
Liquisys M CLM223/253
Transmitter for Conductivity

Endress+Hauser
About this document
Safety messages
The structure, signal words and safety colors of the signs comply with the specifications of
ANSI Z535.6 ("Product safety information in product manuals, instructions and other
collateral materials").
Symbols
Safety message structure Meaning
DANGER
!
Cause (/consequences)
Consequences if safety
message is not heeded
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the situation will result in a fatal or serious
injury.
WARNING
!
Cause (/consequences)
Consequences if safety
message is not heeded
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the situation can result in a fatal or serious
injury.
CAUTION
!
Cause (/consequences)
Consequences if safety
message is not heeded
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid this situation can result in minor or
medium injury.
NOTICE
Cause/situation
Consequences if safety
message is not heeded
‣Action/note
This symbol alerts you to situations that can result in
damage to property and equipment.
Additional information, tips
Permitted or recommended
Forbidden or not recommended

Liquisys M CLM223/253
Endress+Hauser 3
Table of contents
1 Basic safety instructions . . . . . . . . . . . . . 5
1.1 Requirements for the personnel . . . . . . . . . . . . . . . 5
1.2 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Workplace safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Product safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.6 Electrical symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Incoming acceptance and product
identification . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Incoming acceptance . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Product identification . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3.1 Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3.2 Identifying the product . . . . . . . . . . . . . . . . 8
2.4 Certificates and approvals . . . . . . . . . . . . . . . . . . . . 8
2.4.1 CE mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4.2 CSA general purpose . . . . . . . . . . . . . . . . . . 8
3 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Quick installation guide . . . . . . . . . . . . . . . . . . . . . . 9
3.1.1 Measuring system . . . . . . . . . . . . . . . . . . . . 9
3.2 Installation conditions . . . . . . . . . . . . . . . . . . . . . 10
3.2.1 Field instrument . . . . . . . . . . . . . . . . . . . . 10
3.2.2 Panel-mounted instrument . . . . . . . . . . . 11
3.3 Installation instructions . . . . . . . . . . . . . . . . . . . . 12
3.3.1 Field instrument . . . . . . . . . . . . . . . . . . . . 12
3.3.2 Panel-mounted instrument . . . . . . . . . . . 15
3.4 Post-installation check . . . . . . . . . . . . . . . . . . . . . 15
4 Electrical connection . . . . . . . . . . . . . . . 16
4.1 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1.1 Connecting supply voltage . . . . . . . . . . . 16
4.1.2 Connection diagram . . . . . . . . . . . . . . . . . 17
4.1.3 Measuring cable and sensor connection 19
4.1.4 Alarm contact . . . . . . . . . . . . . . . . . . . . . . 21
4.2 Post-connection check . . . . . . . . . . . . . . . . . . . . . 22
5 Operability. . . . . . . . . . . . . . . . . . . . . . . . 23
5.1 Quick operation guide . . . . . . . . . . . . . . . . . . . . . 23
5.2 Display and operating elements . . . . . . . . . . . . . 23
5.2.1 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.2.2 Operating elements . . . . . . . . . . . . . . . . . 24
5.2.3 Key assignment . . . . . . . . . . . . . . . . . . . . 25
5.3 Local Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.3.1 Automatic/manual mode . . . . . . . . . . . . 27
5.3.2 Operating concept . . . . . . . . . . . . . . . . . . 28
6 Commissioning . . . . . . . . . . . . . . . . . . . 30
6.1 Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.2 Switching on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.3 Quick start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.4 System configuration . . . . . . . . . . . . . . . . . . . . . . . 35
6.4.1 Setup 1 (Conductivity) . . . . . . . . . . . . . . . . 35
6.4.2 Setup 2 (Temperature) . . . . . . . . . . . . . . . 36
6.4.3 Current input . . . . . . . . . . . . . . . . . . . . . . . 39
6.4.4 Current outputs . . . . . . . . . . . . . . . . . . . . . 42
6.4.5 Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.4.6 Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.4.7 Relay contact configuration . . . . . . . . . . . 49
6.4.8 Temperature compensation with table . . 62
6.4.9 Concentration measurement . . . . . . . . . . 63
6.4.10 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
6.4.11 E+H Service . . . . . . . . . . . . . . . . . . . . . . . . . 67
6.4.12 Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . 68
6.5 Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
6.6 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7 Diagnostics and troubleshooting . . . . 72
7.1 Troubleshooting instructions . . . . . . . . . . . . . . . . 72
7.2 System error messages . . . . . . . . . . . . . . . . . . . . . 72
7.3 Process specific errors . . . . . . . . . . . . . . . . . . . . . . 75
7.4 Instrument specific errors . . . . . . . . . . . . . . . . . . . 79
8 Maintenance . . . . . . . . . . . . . . . . . . . . . 81
8.1 Maintenance of the entire measuring point . . . . 81
8.1.1 Cleaning the transmitter . . . . . . . . . . . . . . 81
8.1.2 Cleaning the conductivity sensors . . . . . . 82
8.1.3 Simulation of conductive sensors for
device test . . . . . . . . . . . . . . . . . . . . . . . . . . 82
8.1.4 Simulation of inductive sensors for
device test . . . . . . . . . . . . . . . . . . . . . . . . . . 84
8.1.5 Check of conductive sensors . . . . . . . . . . . 85
8.1.6 Check of inductive sensors . . . . . . . . . . . . 85
8.1.7 Connecting lines and junction boxes . . . . 86
9 Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
9.1 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
9.2 Dismantling the panel-mounted instrument . . . 87
9.3 Dismantling the field instrument . . . . . . . . . . . . . 90
9.4 Replacing the central module . . . . . . . . . . . . . . . . 93
9.5 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
9.6 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
10 Accessories. . . . . . . . . . . . . . . . . . . . . . . 95
10.1 Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
10.2 Connection accessories . . . . . . . . . . . . . . . . . . . . . 96
10.3 Mounting accessories . . . . . . . . . . . . . . . . . . . . . . . 96
10.4 Software and hardware add-ons . . . . . . . . . . . . . . 98
10.5 Calibration solutions . . . . . . . . . . . . . . . . . . . . . . . 98

Liquisys M CLM223/253
4Endress+Hauser
11 Technical data. . . . . . . . . . . . . . . . . . . . .99
11.1 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
11.2 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
11.3 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
11.4 Performance characteristics . . . . . . . . . . . . . . . . 104
11.5 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
11.6 Mechanical construction . . . . . . . . . . . . . . . . . . . 105
12 Appendix . . . . . . . . . . . . . . . . . . . . . . . .106
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Liquisys M CLM223/253 Basic safety instructions
Endress+Hauser 5
1 Basic safety instructions
1.1 Requirements for the personnel
‣Installation, commissioning, operation and maintenance of the measuring system must
only be carried out by trained technical personnel.
‣The technical personnel must be authorized by the plant operator to carry out the
specified activities.
‣The electrical connection may only be performed by an electrical technician.
‣The technical personnel must have read and understood these Operating Instructions
and must follow the instructions they contain.
‣Measuring point faults may only be rectified by authorized and specially trained
personnel.
Repairs not described in the enclosed Operating Instructions may only be carried out
directly at the manufacturer's or by the service organization.
1.2 Designated use
Liquisys M is a transmitter for determining the conductivity and the resistivity of a liquid
medium.
The transmitter is particularly suited for use in the following areas:
• Ultrapure water
• Water treatment
• Cooling water desalinization
• Condensate treatment
• Municipal sewage treatment plants
•Chemicalindustry
• Food industry
• Pharmaceutical industry
Any other use than the one described here compromises the safety of persons and the entire
measuring system and is, therefore, not permitted.
The manufacturer is not liable for damage caused by improper or non-designated use.
1.3 Workplace safety
As the user, you are responsible for complying with the following safety conditions:
• Regulations for explosion protection
• Installation instructions
• Local standards and regulations
Electromagnetic compatibility
With regard to electromagnetic compatibility, this device has been tested in accordance with
the applicable European standards for industrial applications.
The electromagnetic compatibility indicated only applies to a device that has been connected
in accordance with the instructions in these Operating Instructions.
1.4 Operational safety
‣Before commissioning the entire measuring point, make sure all the connections are
correct. Ensure that electrical cables and hose connections are not damaged.
‣Do not operate damaged products, and safeguard them to ensure that they are not
operated inadvertently. Mark the damaged product as defective.
‣If faults cannot be rectified, the products must be taken out of service and secured against
unintentional commissioning.

Basic safety instructions Liquisys M CLM223/253
6Endress+Hauser
1.5 Product safety
The product is designed to meet state-of-the-art safety requirements, has been tested and
left the factory in a condition in which it is safe to operate. Relevant regulations and
European standards have been observed.
1.6 Electrical symbols
Safety icons
Electrical symbols
#
Warning!
This symbol alerts you to hazards. They can cause serious damage to the instrument or to
persons if ignored.
"
Caution!
This symbol alerts you to possible faults which could arise from incorrect operation. They
could cause damage to the instrument if ignored.
!Note!
This symbol indicates important items of information.
%Direct Current (DC)
A terminal at which DC is applied or through which DC flows.
&Alternating Current (AC)
A terminal at which (sine-form) AC is applied or through which AC flows.
)
Ground connecting
A terminal which, from the user’s point of view, is already grounded using a grounding
system.
*Protective ground terminal
A terminal which must be grounded before other connections may be set up.
Class II (isolated) device
Double insulation
bAlarm relay
Input
Output
DC voltage source
Temperature sensor

Liquisys M CLM223/253 Incoming acceptance and product identification
Endress+Hauser 7
2 Incoming acceptance and product
identification
2.1 Incoming acceptance
‣Make sure the packaging is undamaged!
‣Inform the supplier about any damage to the packaging.
Keep the damaged packaging until the matter has been settled.
‣Make sure the contents are undamaged!
‣Inform the supplier about damage to the contents. Keep the damaged products until the
matter has been settled.
‣Check that the order is complete and agrees with your shipping documents.
‣The packaging material used to store or to transport the product must provide shock
protection and humidity protection. The original packaging offers the best protection.
Also, keep to the approved ambient conditions (see "Technical data").
‣If you have any questions, please contact your supplier or your local sales center.
2.2 Scope of delivery
The delivery of the field instrument includes:
• 1 transmitter CLM253
• 1 plug-in screw terminal
•1cableglandPg7
• 1 cable gland Pg 16 reduced
• 2 cable glands Pg 13.5
• 1 Operating Instructions BA00193C/07/EN
•1OperatingInstructions
• versions with HART communication:
1 Operating Instructions Field Communication with HART, BA00208C/07/EN
• versions with PROFIBUS communication:
1 Operating Instructions Field Communication with PROFIBUS PA/DP, BA00209C/07/EN
The delivery of the panel mounted instrument includes:
• 1 transmitter CLM223
• 1 set of plug-in screw terminals
• 2 tensioning screws
• 1 Operating Instructions BA00193C/07/EN
•1OperatingInstructions
• versions with HART communication:
1 Operating Instructions Field Communication with HART, BA00208C/07/EN
• versions with PROFIBUS communication:
1 Operating Instructions Field Communication with PROFIBUS PA/DP, BA00209C/07/EN
If you have any questions, please contact your supplier or your sales centre responsible.

Incoming acceptance and product identification Liquisys M CLM223/253
8Endress+Hauser
2.3 Product identification
2.3.1 Nameplate
The nameplate contains the following information:
• Manufacturer data
•Ordercode
• Extended order code
• Serial number
• Operating conditions
•Safetyicons
Compare the order code on the nameplate with your order.
2.3.2 Identifying the product
The order code and serial number of your device can be found in the following locations:
• On the nameplate
• In the delivery papers
To find out the version of your device, enter the order code indicated on the nameplate
in the search screen at the following address: www.products.endress.com/order-ident
2.4 Certificates and approvals
2.4.1 CE mark
Declaration of conformity
The product meets the requirements of the harmonized European standards. It thus
complies with the legal requirements of the EC directives.
The manufacturer confirms successful testing of the product by affixing the 4symbol.
2.4.2 CSA general purpose
CSA General Purpose
The products listed below are eligible to bear the CSA Mark shown with adjacent indicators
"C" and "US":
Version Approval
CLM253-..2...
CLM253-..3...
CLM253-..7...
CSA Mark for Canada and USA
CLM223-..2...
CLM223-..3...
CLM223-..7...
CSA Mark for Canada and USA

Liquisys M CLM223/253 Mounting
Endress+Hauser 9
3Mounting
3.1 Quick installation guide
Proceed as follows to completely install the measuring point:
• Install the transmitter (see "Installation instructions" section).
• If the sensor is not yet installed in the measuring point, install it (see Technical
Information of the sensor).
• Connect the sensor to the transmitter as illustrated in the "Electrical connection" section.
• Connect the transmitter as illustrated in the "Electrical connection" section.
• Commission the transmitter as explained in the "Commissioning" section.
3.1.1 Measuring system
A complete measuring systems comprises:
• The transmitter Liquisys M CLM223 or CLM253
• A sensor with or without an integrated temperature sensor
• A measuring cable CYK71 (conductive), CPK9 for Condumax H CLS16 or CLK5 (inductive)
Options: extension cable, junction box VBM
a0008937
Fig. 1: Complete measuring system Liquisys M CLM223/253
1
2
3
4
Conductive sensor CLS15
Liquisys M CLM253
Liquisys M CLM223
Inductive sensor CLS54
5
6
7
Inductive sensor CLS50
Conductive sensor CLS21
Immersion assembly CLA111
ENDRESS+HAUSER
LIQUISYS S
CAL REL
REL1
REL1
ALARM
REL2
REL2
E
ENDRESS+HAUSER
LIQUISYS S
CAL REL
REL1
REL1
ALARM
REL2
REL2
E
1
2
3
4
5
6
7

Mounting Liquisys M CLM223/253
10 Endress+Hauser
3.2 Installation conditions
3.2.1 Field instrument
a0005733
Fig. 2: Field instrument
There is a hole in the punching for the cable entry (connection of supply voltage). It
serves as a pressure balance during air freight dispatching. Make sure no moisture
penetrates the inside of the housing before the cable installation. The housing is
completely air-tight after the cable installation.
CAL REL
REL1
REL1
ALARM
REL2
REL2
E
Pg 7
Pg 16
M5
11/
0.43
Ø6/
Ø 0.24
115 / 4.53
157 / 6.18
247 / 9.72
70 / 2.76
70 / 2.76
154 / 6.06
170 / 6.69
mm / inch
Pg 13.5
a0005734
Fig. 3: View into the field housing
1
2
3
4
Removable electronics box
Partition plate
Terminals
Fuse
1
2
3
4

Liquisys M CLM223/253 Mounting
Endress+Hauser 11
3.2.2 Panel-mounted instrument
a0005735
Fig. 4: Panel-mounted instrument
90 / 3.54
139 / 5.47
96 / 3.78
6/
0.24
mm / inch
92 / 3.62
149.5 / 5.89

Mounting Liquisys M CLM223/253
12 Endress+Hauser
3.3 Installation instructions
3.3.1 Field instrument
There are several ways of securing the field housing:
• Wall mounting with fixing screws
• Post mounting to cylindrical pipes
• Post mounting to square securing masts
NOTICE
Effect of climate conditions (rain, snow, direct sun etc.)
Impaired operation to complete transmitter failure
‣When installing outside, always use the weather protection cover (accessory).
Transmitter wall mounting
a0005736
Fig. 5: Wall mounting field device
For wall mounting the transmitter, proceed as follows:
1. Drill the bores as shown in å5.
2. Drive the two fixing screws through the securing bores (1) from the front.
3. Mount the transmitter on the wall as shown.
4. Cover the bores with plastic caps (2).
1
2
154 / 6.06
mm / inch
Ø6/
Ø 0.24

Liquisys M CLM223/253 Mounting
Endress+Hauser 13
Transmitter post mounting
You require a post mounting kit to secure the field device to horizontal and vertical posts
or pipes (max. Ø 60 mm (2.36")). The kit can be acquired as an accessory (see
"Accessories" section).
a0005737
Fig. 6: Post mounting field device to cylindrical pipes
For post mounting the transmitter, proceed as follows:
1. Guide the two securing screws (1) of the mounting kit through the openings of the
securing plate (3).
2. Screw the securing plate onto the transmitter using the four fixing screws (2).
3. Secure the retainer with the field device on the post or pipe using the clip.
1
2
3
1
1
3
Ø max. 60 /
2.36
mm / inch

Mounting Liquisys M CLM223/253
14 Endress+Hauser
You can also secure the field device to a square universal post in conjunction with the
weather protection cover. These can be acquired as accessories, see "Accessories" section.
a0005738
Fig. 7: Mounting field device with universal posts and weather protection cover
For mounting the weather protection cover, proceed as follows:
1. Screw the weather protection cover with 2 screws (bores 1) to the upright post
(bores 2).
2. Secure the field device to the weather protection cover. To do so, use the bores (3).
3
1
2
3

Liquisys M CLM223/253 Mounting
Endress+Hauser 15
3.3.2 Panel-mounted instrument
The panel-mounted instrument is secured with the clamping screws supplied (see å8).
The necessary installation depth is approx. 165 mm (6.50").
a0005739
Fig. 8: Securing the panel-mounted instrument
1 Wall of the cabinet
2Seal
3 Clamping screws
* Required installation depth
3.4 Post-installation check
• After installation, check the transmitter for damage.
• Check whether the transmitter is protected against moisture and direct sunlight (e.g. by
the weather protection cover).
1
2
3
3
3
92 / 3.62
+0.5 +0.02
92 / 3.62
+0.5 +0.02
90 / 3.54
57 / 2.24
33 /
1.30
approx. 25 /
0.98
139 / 5.47
max. 45 /
1.77 6 /
0.24
96 / 3.78
92 /
3.62
approx. 165 / 6.50* mm / inch

Electrical connection Liquisys M CLM223/253
16 Endress+Hauser
4 Electrical connection
WARNING
!
Device is energized
Improper connection can cause injury or death.
‣The electrical connection must only be carried out by a certified electrician.
‣Technical personnel must have read and understood the instructions in this manual and
must adhere to them.
‣Prior to beginning any wiring work, make sure voltage is not applied to any of the cables.
4.1 Wiring
4.1.1 Connecting supply voltage
NOTICE
The device does not have a power switch
‣You must provide a protected circuit breaker in the vicinity of the device.
‣This must be a switch or a power-circuit breaker and you must label it as the circuit
breaker for the device.
‣At the supply point, the power supply for the 24 V versions must be isolated from
dangerous live cables by double or reinforced insulation.

Liquisys M CLM223/253 Electrical connection
Endress+Hauser 17
4.1.2 Connection diagram
The wiring diagram depicted in å9 shows the connections of an instrument equipped
with all the options. Connecting the sensors and the various measuring cables is explained
in more detail in the "Measuring cables and sensor connection" section.
a0008920
Fig. 9: Electrical connection of the transmitter
A
B
C
D
E
F
G
H
Sensor (conductive)
Sensor (inductive)
Temperature sensor
Signal output 1 conductivity
Signal output 2 variable
Binary input 1 (Hold)
Binary input 2 (Chemoclean)
Aux. voltage output
I
J
K
L
M
N
O
Alarm (current-free contact position)
Relay 1 (current-free contact position)
Relay 2 (current-free contact position)
Relay 3 (current-free contact position)
Relay 4 (current-free contact position)
Current input 4 to 20 mA
Power supply
11
12
13
47
48
49
57
58
59
15 V
10-50 V
81
82
10-50 V
93
94
41
42
43
Lf
mA
31
32
mA
33
34
51
52
53
54
55
56
S
84
83
15
16
84
PE
83
L+
L–N
L1
~=
PE
23 +
24 -
mA
15
16
85+
86 _
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O

Electrical connection Liquisys M CLM223/253
18 Endress+Hauser
Pay attention to the following:
• 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:
– Inductive sensors: terminal "S"
– Conductive sensors: 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.
• The circuits "E" and "H" are not galvanically isolated from each other.
Field instrument connection
Guide the measuring cables through the PG glands into the housing. Connect the measuring
cables in accordance with the terminal assignment (å10).
a0008915
Fig. 10: Field instrument connection compartment sticker
1 PE distributor rail for CD/CS version (conductive sensors)
42
+++++-----
434154 55 56
NC
12
13
11
31
83 84 15
32
16
3433
S
NC 938685 94 81 82 NC
51 52 53 57 58 59 47 48 49
Lf
Temp.
(opt.)
+15V
10mA
WH
YE
GN
REL 4SENSOR REL 3 REL 2 REL 1
131095-4F
2 1
11 12
13
NC
Mains
Hilfsenergie
L1
+
N
-
(AC)
(DC)
Contacts:
max. 2A
AC: 250V/500VA
DC: 30V/60W
+-
23 24
4..20mA
PE
1
Binär/ Binary Binär/ Binary

Liquisys M CLM223/253 Electrical connection
Endress+Hauser 19
Panel-mounted instrument connection
a0008912
Fig. 11: Panel-mounted instrument connection sticker
1 Ground terminal
NOTICE
Nonobservance could cause incorrect measurement
‣Terminals marked NC may not be wired.
‣Unmarked terminals may not be wired.
Please label the sensor terminal block with the sticker provided.
4.1.3 Measuring cable and sensor connection
You require screened special measuring cables to connect conductivity sensors to the
transmitter. The following multi-core and ready-to-use cable types can be used:
Sensor type Cable Extension
Two-electrode sensors with or without
temperature sensor Pt 100
CYK71
CPK9* (for CLS16)
Junction box VBM + CYK71
Inductive sensors CLS50, CLS52 Cable permanently attached
to sensor
Junction box VBM + CLK5
* High-temperature version without PML
Maximum cable length
Conductivity measurement (conductive) max. 100 m (328 ft) with CYK71
Resistivity measurement max 15 m (49.22 ft) with CYK71
Conductivity measurement (inductive) max. 55 m (180.46 ft) with CLK5 (sensor cable incl.)

Electrical connection Liquisys M CLM223/253
20 Endress+Hauser
Structure and termination of the measuring cables
a0008938-de
Fig. 12: Structure of the special measuring cables
A Semiconductor layer
sc Screening
For further information on the cables and junction boxes, please refer to the
"Accessories" section.
Field instrument measuring cable connection
Proceed as follows to connect a conductivity sensor to the field instrument:
1. Open the housing cover to access the terminal block in the connection compartment.
2. Break the punching of a cable gland from the housing, mount a cable gland and guide
the cable through this cable gland.
3. Connect the cable in accordance with the terminal assignment (see connection
compartment sticker).
4. Tighten the cable gland.
83
84
11
12
13
CYK71 CLK5
15
16
83
84
11
12
13
A
GN
WH
YE
BK
sc
BN(nc)
GN
WH
YE
A
sc
WH
RD
BN(nc)
sc