Endress+Hauser Liquiline CM442 Technical specifications

Products Solutions Services
Brief Operating Instructions
Liquiline
CM442/CM444/CM448
Universal four-wire multichannel controller
These instructions are Brief Operating Instructions; they are
not a substitute for the Operating Instructions pertaining to
the device.
Detailed information on the device can be found in the
Operating Instructions and in the other documentation
available at:
• www.endress.com/device-viewer
• Smart phone/tablet: Endress+Hauser Operations App
KA01159C/07/EN/10.23-00
71625986
2023-08-24

Liquiline CM442/CM444/CM448
2 Endress+Hauser
Order code:
Ext. ord. cd.:
Ser. no.:
www.endress.com/deviceviewer Endress+Hauser
Operations App
XXXXXXXXXXXX
XXXXX-XXXXXX
XXX.XXXX.XX
Serial number
1.
3.
2.
A0040778

Liquiline CM442/CM444/CM448 Table of contents
Endress+Hauser 3
Table of contents
1 About this document .............................................................. 4
1.1 Warnings ............................................................................ 4
1.2 Symbols ............................................................................. 4
1.3 Symbols on the device ................................................................... 5
1.4 Documentation ........................................................................ 5
2 Basic safety instructions .......................................................... 6
2.1 Requirements of the personnel ............................................................ 6
2.2 Intended use .......................................................................... 6
2.3 Workplace safety ...................................................................... 6
2.4 Operational safety ......................................................................7
2.5 Product safety ......................................................................... 7
3 Incoming acceptance and product identification ................................... 8
3.1 Incoming acceptance .................................................................... 8
3.2 Product identification ................................................................... 8
3.3 Scope of delivery ....................................................................... 9
4 Mounting ....................................................................... 10
4.1 Mounting requirements ................................................................ 10
4.2 Mounting the measuring device ...........................................................11
4.3 Post-mounting check .................................................................. 14
5 Electrical connection ............................................................ 15
5.1 Connecting the measuring device ......................................................... 15
5.2 Connecting the sensors ................................................................. 22
5.3 Connecting additional inputs, outputs or relays ............................................... 26
5.4 Connecting PROFIBUS or Modbus 485 ...................................................... 29
5.5 Hardware settings ..................................................................... 33
5.6 Ensuring the degree of protection ......................................................... 34
5.7 Post-connection check ..................................................................35
6 Operation options ............................................................... 36
6.1 Overview ........................................................................... 36
6.2 Access to operating menu via local display ................................................... 37
7 Commissioning .................................................................. 38
7.1 Function check ....................................................................... 38
7.2 Power-up ........................................................................... 38
7.3 Basic setup .......................................................................... 39

About this document Liquiline CM442/CM444/CM448
4 Endress+Hauser
1 About this document
1.1 Warnings
Structure of information Meaning
LDANGER
Causes (/consequences)
If necessary, Consequences of non-
compliance (if applicable)
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the dangerous situation will result in a fatal or serious injury.
LWARNING
Causes (/consequences)
If necessary, Consequences of non-
compliance (if applicable)
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the dangerous situation can result in a fatal or serious injury.
LCAUTION
Causes (/consequences)
If necessary, Consequences of non-
compliance (if applicable)
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid this situation can result in minor or more serious injuries.
NOTICE
Cause/situation
If necessary, Consequences of non-
compliance (if applicable)
‣Action/note
This symbol alerts you to situations which may result in damage to property.
1.2 Symbols
Symbol Meaning
Additional information, tips
Permitted or recommended
Recommended
Not permitted or not recommended
Reference to device documentation
Reference to page
Reference to graphic
 Result of a step

Liquiline CM442/CM444/CM448 About this document
Endress+Hauser 5
1.3 Symbols on the device
Symbol Meaning
Reference to device documentation
Do not dispose of products bearing this marking as unsorted municipal waste.
Instead, return them to the manufacturer for disposal under the applicable
conditions.
1.4 Documentation
The following manuals complement these Brief Operating Instructions and are available on
the product pages on the Internet:
• Operating Instructions for Liquiline CM44x, BA00444C
• Device description
• Commissioning
• Operation
• Software description (excluding sensor menus; these are described in a separate manual -
see below)
• Device-specific diagnostics and troubleshooting
• Maintenance
• Repair and spare parts
• Accessories
• Technical data
• Operating Instructions for Memosens, BA01245C
• Software description for Memosens inputs
• Calibration of Memosens sensors
• Sensor-specific diagnostics and troubleshooting
• Operating Instructions for HART communication, BA00486C
• Onsite settings and installation instructions for HART
• Description of HART driver
• Guidelines for communication via fieldbus and web server
• HART, SD01187C
• PROFIBUS, SD01188C
• Modbus, SD01189C
• Web server, SD01190C
• EtherNet/IP, SD01293C
• PROFINET, SD02490C

Basic safety instructions Liquiline CM442/CM444/CM448
6 Endress+Hauser
2 Basic safety instructions
2.1 Requirements of the personnel
• Installation, commissioning, operation and maintenance of the measuring system may be
carried out only by specially trained technical personnel.
• The technical personnel must be authorized by the plant operator to carry out the specified
activities.
• The electrical connection may be performed only by an electrical technician.
• The technical personnel must have read and understood these Operating Instructions and
must follow the instructions contained therein.
• Faults at the measuring point may only be rectified by authorized and specially trained
personnel.
Repairs not described in the Operating Instructions provided must be carried out only
directly at the manufacturer's site or by the service organization.
2.2 Intended use
2.2.1 Non-hazardous environment
Liquiline CM44x is a multichannel controller for connecting digital sensors with Memosens
technology in non-hazardous environments.
The device is designed for use in the following applications:
• Food and beverages
• Life science
• Water and wastewater
• Chemical industry
• Power stations
• Other industrial applications
2.2.2 Hazardous environment
‣Pay attention to the information in the relevant documents relating to safety instructions
(XA).
2.2.3 Non-intended use
Use of the device for any purpose other than that described, poses a threat to the safety of
people and of the entire measuring system and is therefore not permitted.
The manufacturer is not liable for damage caused by improper or non-designated use.
2.3 Workplace safety
As the user, you are responsible for complying with the following safety conditions:
• Installation guidelines
• Local standards and regulations
• Regulations for explosion protection

Liquiline CM442/CM444/CM448 Basic safety instructions
Endress+Hauser 7
Electromagnetic compatibility
• The product has been tested for electromagnetic compatibility in accordance with the
applicable international standards for industrial applications.
• The electromagnetic compatibility indicated applies only to a product that has been
connected in accordance with these Operating Instructions.
2.4 Operational safety
Before commissioning the entire measuring point:
1. Verify that all connections are correct.
2. Ensure that electrical cables and hose connections are undamaged.
3. Do not operate damaged products, and protect them against unintentional operation.
4. Label damaged products as defective.
During operation:
‣If faults cannot be rectified:
products must be taken out of service and protected against unintentional operation.
LCAUTION
Programs not switched off during maintenance activities.
Risk of injury due to medium or cleaning agent!
‣Quit any programs that are active.
‣Switch to the service mode.
‣If testing the cleaning function while cleaning is in progress, wear protective clothing,
goggles and gloves or take other suitable measures to protect yourself.
2.5 Product safety
2.5.1 State-of-the-art
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. The relevant regulations and
international standards have been observed.
2.5.2 IT security
We only provide a warranty if the device is installed and used as described in the Operating
Instructions. The device is equipped with security mechanisms to protect it against any
inadvertent changes to the device settings.
IT security measures in line with operators' security standards and designed to provide
additional protection for the device and device data transfer must be implemented by the
operators themselves.

Incoming acceptance and product identification Liquiline CM442/CM444/CM448
8 Endress+Hauser
3 Incoming acceptance and product identification
3.1 Incoming acceptance
1. Verify that the packaging is undamaged.
 Notify the supplier of any damage to the packaging.
Keep the damaged packaging until the issue has been resolved.
2. Verify that the contents are undamaged.
 Notify the supplier of any damage to the delivery contents.
Keep the damaged goods until the issue has been resolved.
3. Check that the delivery is complete and nothing is missing.
 Compare the shipping documents with your order.
4. Pack the product for storage and transportation in such a way that it is protected
against impact and moisture.
 The original packaging offers the best protection.
Make sure to comply with the permitted ambient conditions.
If you have any questions, please contact your supplier or your local Sales Center.
3.2 Product identification
3.2.1 Nameplate
Nameplates can be found:
• on the outside of the housing
• on the packaging (adhesive label, portrait format)
• on the inside of the display cover
The nameplate provides you with the following information on your device:
• Manufacturer identification
• Order code
• Extended order code
• Serial number
• Firmware version
• Ambient conditions
• Input and output values
• Activation codes
• Safety information and warnings
• Degree of protection
‣Compare the information on the nameplate with the order.

Liquiline CM442/CM444/CM448 Incoming acceptance and product identification
Endress+Hauser 9
3.2.2 Identifying the product
Product page
www.endress.com/cm442
www.endress.com/cm444
www.endress.com/cm448
Interpreting the order code
The order code and serial number of your product can be found in the following locations:
• On the nameplate
• In the delivery papers
Obtaining information on the product
1. Go to www.endress.com.
2. Page search (magnifying glass symbol): Enter valid serial number.
3. Search (magnifying glass).
 The product structure is displayed in a popup window.
4. Click the product overview.
 A new window opens. Here you fill information pertaining to your device, including
the product documentation.
3.2.3 Manufacturer address
Endress+Hauser Conducta GmbH+Co. KG
Dieselstraße 24
70839 Gerlingen
Germany
3.3 Scope of delivery
The scope of delivery comprises:
• 1 multichannel controller in the version ordered
• 1 mounting plate
• 1 wiring label (attached at the factory to the inside of the display cover)
• 1 printed copy of the Brief Operating Instructions in the language ordered
• Separation element (pre-installed on hazardous area version type 2DS Ex-i)
• Safety instructions for the hazardous area (for hazardous area version type 2DS Ex-i)
‣If you have any queries:
Please contact your supplier or local sales center.

Mounting Liquiline CM442/CM444/CM448
10 Endress+Hauser
4 Mounting
4.1 Mounting requirements
4.1.1 Mounting plate
80 (3.15)
190 (7.48)
3 (0.12)
4 x 6.5 (0.26)
170 (6.69)
125 (4.92)
A0012426
 1 Mounting plate. Engineering unit: mm (in)

Liquiline CM442/CM444/CM448 Mounting
Endress+Hauser 11
4.1.2 Weather protection cover
NOTICE
Effect of climatic conditions (rain, snow, direct sunlight etc.)
Impaired operation to complete transmitter failure are possible!
‣Always use the weather protection cover (accessory) when installing the device outdoors.
320 (12.6)
270 (10.6)
300 (11.8)
80 (3.15)
170 (6.69)
170 (6.69)
80 (3.15)
8 x Ø 7 (0.28)
A0012428
 2 Dimensions in mm (in)
4.2 Mounting the measuring device
4.2.1 Post mounting
You require the post mounting kit (optional) to mount the unit on a pipe, post or railing
(square or circular, clamping range 20 to 61 mm (0.79 to 2.40")).

Mounting Liquiline CM442/CM444/CM448
12 Endress+Hauser
1234
56
7
8
A0033044
 3 Post mounting
1 Weather protection cover (optional) 5 Spring washers and nuts (post mounting kit)
2 Post mounting plate (post mounting kit) 6 Pipe or railing (circular/square)
3 Spring washers and nuts (post mounting kit) 7 Mounting plate
4 Pipe clamps (post mounting kit) 8 Threaded rods (post mounting kit)
A0033045
 4 Post mounting
A0025885
 5 Attach the device and click it into place
1. Place the device on the mounting plate.
2. Slide the device downwards in the guide on the mounting rail until it clicks into place.

Liquiline CM442/CM444/CM448 Mounting
Endress+Hauser 13
4.2.2 Rail mounting
1 2 34
56
7
8
9
A0012668
 6 Rail mounting
1 Weather protection cover (optional) 6 Pipe or railing (circular/square)
2 Post mounting plate (post mounting kit) 7 Mounting plate
3 Spring washers and nuts (post mounting kit) 8 Threaded rods (post mounting kit)
4 Pipe clamps (post mounting kit) 9 Screws (post mounting kit)
5 Spring washers and nuts (post mounting kit)
A0025886
 7 Rail mounting
A0027803
 8 Attach the device and click it into place
1. Place the device on the mounting plate.
2. Slide the device downwards in the guide on the mounting rail until it clicks into place.

Mounting Liquiline CM442/CM444/CM448
14 Endress+Hauser
4.2.3 Wall mounting
≥340 (13.4)
≥150 (5.91)
A0012686
 9 Installation clearance in mm (in)
1
3
4
2
A0027798
 10 Wall mounting
1 Wall
24 drill holes 1)
3 Mounting plate
4 Screws Ø 6 mm (not part of scope of supply)
1)The size of the drill holes depends on the wall plugs used. The wall plugs and screws must be provided by the customer.
A0027799
 11 Wall mounting
A0027797
 12 Attach the device and click it into place
1. Place the device on the mounting plate.
2. Slide the device downwards in the guide on the mounting rail until it clicks into place.
4.3 Post-mounting check
1. After installation, check the transmitter for damage.
2. Check whether the transmitter is protected against precipitation and direct sunlight
(e.g. by the weather protection cover).

Liquiline CM442/CM444/CM448 Electrical connection
Endress+Hauser 15
5 Electrical connection
5.1 Connecting the measuring device
LWARNING
Device is live!
Incorrect connection may result in injury or death!
‣The electrical connection may be performed only by an electrical technician.
‣The electrical technician must have read and understood these Operating Instructions and
must follow the instructions contained therein.
‣Prior to commencing connection work, ensure that no voltage is present on any cable.
NOTICE
The device does not have a power switch!
‣Provide a protected circuit breaker in the vicinity of the device at the place of installation.
‣The circuit breaker must be a switch or power switch, and must be labeled as the circuit
breaker for the device.
‣At the supply point, the power supply must be isolated from dangerous live cables by
double or reinforced insulation in the case of devices with a 24 V supply voltage.
5.1.1 Opening the housing
NOTICE
Pointed or sharp tools
The use of unsuitable tools can cause scratches on the housing or damage to the seal, and
therefore negatively affect the leak-tightness of the housing!
‣Do not use any sharp or pointed objects, e.g. a knife, to open the housing.
‣Only use a suitable Phillips screwdriver.
1.
2. 3.
4.
 13 Slacken the housing screws crosswise with
a Phillips head screwdriver
≤180°
 14 Opening display cover, max. opening angle
180˚ (depends on installation position)
1. Slacken the housing screws crosswise.
2. To close the housing: tighten the screws in a similar step-by-step, crosswise sequence.

Electrical connection Liquiline CM442/CM444/CM448
16 Endress+Hauser
5.1.2 Cable mounting rail
1 2 3
A0048299
 15 Cable mounting rail and associated function
1 Cable mounting rail 3 Cable clamps (fixing and grounding the sensor
cables)
2 Threaded bolt (protective ground connection, central
grounding point)
5.1.3 Connecting the cable shield
The sensor, fieldbus and Ethernet cables must be shielded cables.
Only use terminated original cables where possible.
Clamping range of cable clamps: 4 to 11 mm (0.16 to 0.43 in)
Cable sample (does not necessarily correspond to the original cable supplied)
12
3
 16 Terminated cable
1 Outer shield (exposed)
2 Cable cores with ferrules
3 Cable sheath (insulation)
4
A0045763
 17 Connect the cable to the
grounding clamp
4 Grounding clamp
A0045764
 18 Press the cable into the
grounding clamp
The cable shield is grounded using the
grounding clamp 1)
1) Please note the instructions in the "Ensuring the degree of protection" section (→  34)
1. Loosen a suitable cable gland on the bottom of the housing.

Liquiline CM442/CM444/CM448 Electrical connection
Endress+Hauser 17
2. Remove the dummy plug.
3. Attach the gland to the cable end, making sure the gland is facing the right direction.
4. Pull the cable through the gland and into the housing.
5. Route the cable in the housing in such a way that the exposed cable shield fits into one
of the cable clamps and the cable cores can be easily routed as far as the connection plug
on the electronics module.
6. Connect the cable to the cable clamp.
7. Clamp the cable.
8. Connect cable cores as per the wiring diagram.
9. Tighten the cable gland from outside.
5.1.4 Cable terminals
Plug-in terminals for Memosens and PROFIBUS/RS485 connections
‣Press the screwdriver against the
clip (opens the terminal).
‣Insert the cable until the limit stop. ‣Remove the screwdriver (closes the
terminal).
After connection, make sure that every cable end is securely in place. Terminated cable
ends, in particular, tend to come loose easily if they have not been correctly inserted as
far as the limit stop.

Electrical connection Liquiline CM442/CM444/CM448
18 Endress+Hauser
All other plug-in terminals
‣Press the screwdriver against the
clip (opens the terminal).
‣Insert the cable until the limit stop. ‣Remove the screwdriver (closes the
terminal).
5.1.5 Connecting the supply voltage for the CM442
N/- L/+
PE
A0039627
 19 Connecting the power supply using the
example of the BASE2-H or -L
H Power unit 100 to 230 VAC
L Power unit 24 VAC or 24 VDC
85
85
86
86
SD
Display
Sensor supply
+
+
–
Service
PK
GY
PK
GY
1
2
–
L
N
*
Power
L/+
N/–
PE
+
–
A
B
41
43
42
Alarm
31
31
32
32
0/4 ... 20 mA
+
+
–
–
HART
+
–
A
B
Sensor 2
Ethernet
87
88
97
98
87
88
97
98
BN
WH
GN
YE
BN
WH
GN
YE
Sensor 1
1
2
A0039625
 20 Complete wiring diagram using the
example of the BASE2-H or -L

Liquiline CM442/CM444/CM448 Electrical connection
Endress+Hauser 19
Connecting the supply voltage
1. Route the power supply cable into the housing through the suitable cable entry.
2. Connect the protective ground of the power unit to the threaded bolt specially provided
on the cable mounting rail.
3. Protective ground or grounding provided at the installation location: provide a ground
cable (min. 0.75 mm2 (corresponding to 18 AWG))1) ! Also guide the ground cable
through the cable entry and connect it to the threaded bolt on the cable mounting rail.
Tighten the nut to 1 Nm.
4. Connect the cable cores L and N (100 to 230 V AC) or + and ‐ (24 V DC) to the plug-in
terminals on the power unit in accordance with the wiring diagram.
1 2 345
 21 Protective ground or grounding
connection
1 Protective ground of power unit
2 Serrated washer and nut
3 Protective ground/ground cable, provided at the
installation location (min. 0.75 mm2 ( 18 AWG)) 1)
4 Serrated washer and nut
5 Mounting bolts
1) For a fuse with a 10 A rating. For a fuse with a rating of 16 A, the protective ground / ground cable must have a
cross-sectional area of at least 1.5 mm2 ( 14 AWG).
NOTICE
Protective ground/ground cable with end sleeve or open cable lug
Loosening the nuts on the protective ground (2) results in loss of the protective function!
‣To connect the protective ground or ground cable to the threaded bolt, only use a cable
with a closed cable lug as per DIN 46211, 46225, form A.
‣Make sure that the nut of the ground cable is tightened to 1 Nm.
‣Never connect the protective ground or ground cable to the threaded bolt with an end
sleeve or an open cable lug!

Electrical connection Liquiline CM442/CM444/CM448
20 Endress+Hauser
5.1.6 Connecting the supply voltage for the CM444 and the CM448
L+ N- PE
A
B
A0039626
 22 Connecting the power supply using the
example of the BASE2-E
A Internal power supply cable
B Extension power unit
85
85
86
86
SD
Display
Sensor supply
+
+
–
Service
PK
GY
PK
GY
1
2
–
+
–
A
B
41
43
42
Alarm
31
31
32
32
0/4 ... 20 mA
+
+
–
–
HART
+
–
A
B
Sensor 2
Ethernet
87
88
97
98
87
88
97
98
BN
WH
GN
YE
BN
WH
GN
YE
Sensor 1
1
2
L/+ N/– *
Power
L/+ N/– PE
Power
(internal)
B
A0039624
 23 Complete wiring diagram using the
example of the BASE2-E and
extension power supply unit (B)
Connecting the supply voltage
1. Route the power supply cable into the housing through the suitable cable entry.
2. Connect the protective ground of the power unit to the threaded bolt specially provided
on the cable mounting rail.
3. Protective ground or grounding provided at the installation location: provide a ground
cable (min. 0.75 mm2 (corresponding to 18 AWG))1) ! Also guide the ground cable
through the cable entry and connect it to the threaded bolt on the cable mounting rail.
Tighten the nut to 1 Nm.
4. Connect the cable cores L and N (100 to 230 V AC) or + and ‐ (24 V DC) to the plug-in
terminals on the power unit in accordance with the wiring diagram.