Endress+Hauser Liquisys M CLM223F User manual

BA237C/07/EN/13.11
71130261
valid as of:
software version 1.12
Operating Instructions
Liquisys M CLM223F
Transmitter for Conductivity

Endress+Hauser
Brief operating instructions
This explains how to use these Operating Instructions to commission your transmitter quickly and
safely:
Safety instructions
Page 4 ff.
Page 5 ff.
General safety instructions
Explanation of the warning symbols
You can find special instructions at the appropriate position in the chapter in question. The
positions are indicated with the icons Warning #, Caution "and Note !
t
Installation
Page 9 ff.
Page 10 ff.
Here you can find information on installation conditions and the dimensions of the transmitter.
You can find information on how to install the transmitter on these pages.
t
Wiring
Page 12 ff. Here you can find out how to connect sensors to the transmitter.
t
Operation
Page 17 ff.
Page 21 ff.
Page 27 ff.
Page 47 ff.
The display and operating elements are described here.
The operating concept is explained here.
The system configuration is explained here.
You can find information on how to calibrate the sensor on these pages.
t
Maintenance
Page 51 ff.
Page 56 ff.
Page 58 ff.
Page 62 ff.
Here you can find information on the maintenance of the entire measuring point.
The accessories which can be delivered for the transmitter are listed on the pages indicated.
Here you can find information on trouble-shooting.
Here you can find an overview of the spare parts which can be delivered as well as an overview
of the system.
t
Technical data
Page 9 ff.
Page 67 ff.
Dimensions
Ambient and process conditions, weight, materials etc.
t
Appendix
Page 70 ff. Here you can find the operating matrix

Liquisys M CLM223F
Endress+Hauser 3
Table of contents
1 Safety instructions . . . . . . . . . . . . . . . . 4
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Installation, commissioning and operation . . . . . . . . 4
1.3 Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Notes on safety icons and symbols . . . . . . . . . . . . . . 5
2 Identification . . . . . . . . . . . . . . . . . . . . 6
2.1 Device designation . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1.1 Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1.2 Product structure . . . . . . . . . . . . . . . . . . . . 6
2.2 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Certificates and approvals . . . . . . . . . . . . . . . . . . . . 7
2.3.1 CE mark . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3.2 Explosion protection for zone 2 . . . . . . . . . . 7
2.3.3 CSA general purpose . . . . . . . . . . . . . . . . . . 7
3 Installation . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Quick installation guide . . . . . . . . . . . . . . . . . . . . . . 8
3.1.1 Measuring system . . . . . . . . . . . . . . . . . . . . 8
3.2 Incoming acceptance, transport, storage . . . . . . . . . . 9
3.3 Installation conditions . . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Installation instructions . . . . . . . . . . . . . . . . . . . . . 10
3.5 Post-installation check . . . . . . . . . . . . . . . . . . . . . . 10
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Electrical connection . . . . . . . . . . . . . . . . . . . . . . 12
4.1.1 Connection diagram . . . . . . . . . . . . . . . . . 12
4.1.2 Measuring cable and sensor connection . . . 14
4.1.3 Alarm contact . . . . . . . . . . . . . . . . . . . . . . 15
4.2 Post-connection check . . . . . . . . . . . . . . . . . . . . . . 16
5 Operation . . . . . . . . . . . . . . . . . . . . . . 17
5.1 Display and operating elements . . . . . . . . . . . . . . . 17
5.1.1 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1.2 Operating elements . . . . . . . . . . . . . . . . . . 18
5.1.3 Key assignment . . . . . . . . . . . . . . . . . . . . . 18
5.2 Local Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2.1 Automatic/manual mode . . . . . . . . . . . . . 20
5.2.2 Operating concept . . . . . . . . . . . . . . . . . . . 21
6 Commissioning. . . . . . . . . . . . . . . . . . 23
6.1 Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.2 Switching on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.3 Quick start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.4 System configuration . . . . . . . . . . . . . . . . . . . . . . . 27
6.4.1 Setup 1 (Conductivity) . . . . . . . . . . . . . . . 27
6.4.2 Setup 2 (Temperature) . . . . . . . . . . . . . . . . 29
6.4.3 Current outputs . . . . . . . . . . . . . . . . . . . . . 32
6.4.4 Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.4.5 Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.4.6 Relay contact configuration . . . . . . . . . . . . 35
6.4.7 Temperature compensation with table . . . . 36
6.4.8 Determination of the temperature
coefficient . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.4.9 Concentration measurement . . . . . . . . . . . 38
6.4.10 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.4.11 E+H Service . . . . . . . . . . . . . . . . . . . . . . . 43
6.4.12 Remote measuring range switching (MRS) . 44
6.5 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7 Maintenance . . . . . . . . . . . . . . . . . . . . 51
7.1 Maintenance of the entire measuring point . . . . . . . 51
7.1.1 Cleaning the transmitter . . . . . . . . . . . . . . 51
7.1.2 Cleaning the conductivity sensors . . . . . . . 52
7.1.3 Simulation of conductive sensors for
device test . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.1.4 Simulation of inductive sensors for
device test . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.1.5 Check of conductive sensors . . . . . . . . . . . 54
7.1.6 Check of inductive sensors . . . . . . . . . . . . . 54
7.1.7 Connecting lines and junction boxes . . . . . 55
7.2 "Optoscope" service tool . . . . . . . . . . . . . . . . . . . . 55
8 Accessories . . . . . . . . . . . . . . . . . . . . . 56
8.1 Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.2 Connection accessories . . . . . . . . . . . . . . . . . . . . . 56
8.3 Hardware add-ons . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.4 Calibration solutions . . . . . . . . . . . . . . . . . . . . . . . 56
8.5 Optoscope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
9 Trouble-shooting . . . . . . . . . . . . . . . . . 58
9.1 Trouble-shooting instructions . . . . . . . . . . . . . . . . . 58
9.2 System error messages . . . . . . . . . . . . . . . . . . . . . . 58
9.3 Process specific errors . . . . . . . . . . . . . . . . . . . . . . 59
9.4 Instrument specific errors . . . . . . . . . . . . . . . . . . . . 61
9.5 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
9.5.1 Dismantling of panel mounted instrument . 63
9.5.2 Panel mounted instrument . . . . . . . . . . . . . 64
9.5.3 Replacement of the central module . . . . . . 65
9.6 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.7 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
10 Technical data . . . . . . . . . . . . . . . . . . . 67
10.1 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
10.2 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
10.3 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
10.4 Performance characteristics . . . . . . . . . . . . . . . . . . 68
10.5 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
10.6 Mechanical construction . . . . . . . . . . . . . . . . . . . . 69
11 Appendix. . . . . . . . . . . . . . . . . . . . . . . 70
Index . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Safety instructions Liquisys M CLM223F
4Endress+Hauser
1 Safety instructions
1.1 Designated use
CLM223 F is a transmitter for determining the conductivity of a liquid medium.
The transmitter is particularly suited for use in the following areas:
• Concentration control
• CIP plants control
• Phase separation
• Product quality assurance
• Wash mobiles and cleaning plants
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.
1.2 Installation, commissioning and operation
Please note the following items:
• Installation, electrical connection, commissioning, operation and maintenance of the measuring
system must only be carried out by trained technical personnel.
The technical personnel must be authorised for the specified activities by the system operator.
• Technical personnel must have read and understood these Operating Instructions and must
adhere to them.
• Before commissioning the entire measuring point, check all the connections for
correctness. Ensure that electrical cables and hose connections are not damaged.
• Do not operate damaged products and secure them against unintentional
commissioning. Mark the damaged product as being defective.
• Measuring point faults may only be rectified by authorised and specially trained
personnel.
• If faults can not be rectified, the products must be taken out of service and secured against
unintentional commissioning.
• Repairs not described in these Operating Instructions may only be carried out at the
manufacturer’s or by the service organisation.
1.3 Operational safety
The transmitter has been designed and tested according to the state of the art and left the factory in
perfect functioning order.
Relevant regulations and European standards have been met.
As the user, you are responsible for complying with the following safety conditions:
• Installation instructions
• Local prevailing standards and regulations.
Ex systems have an additional Ex documentation which is part of the Operating Instructions (see
also chapter "Scope of delivery").
EMC
This instrument has been tested for electromagnetic compatibility in industrial use according to
applicable European standards.
Protection against interference as specified above is valid only for an instrument
connected according to the instructions in these Operating Instructions.

Liquisys M CLM223F Safety instructions
Endress+Hauser 5
1.4 Notes on safety icons and 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.
bAlarm relay
Input
Output
DC voltage source
Temperature sensor

Identification Liquisys M CLM223F
6Endress+Hauser
2 Identification
2.1 Device designation
2.1.1 Nameplate
Compare the order code on the nameplate (on the transmitter) with the product structure (s.b.) and
your order.
The device version can be identified from the order code.
2.1.2 Product structure
2.2 Scope of delivery
The delivery of the panel mounted instrument includes:
• 1 transmitter CLM223 F
• 1 test resistor
• 1 set of plug-in screw terminals
• 2 tensioning screws
• 1 Operating Instructions BA237C/07/EN
• versions with explosion protection for hazardous area zone II (ATEX II 3G):
Safety Instructions for use in explosion-hazardous areas, XA194C/07/A3
a0003615
Fig. 1: Nameplate (example)
Input, software version
CF Conductive sensor
IF Inductive sensor
Power supply
0230VAC
1115VAC
2 230 V AC, CSA Gen. Purp.
3 115 V AC, CSA Gen. Purp.
4 230 V AC, ATEX II 3G [Ex nL] IIC
5100VAC
6 24 V AC/DC, ATEX II 3G [Ex nL] IIC
7 24 V AC/DC, CSA Gen. Purp.
824VAC/DC
Output
0 1 x 20 mA, primary value
1 2 x 20 mA, primary value + secondary value
Additional contacts
05 not selected
10 2 relays (limit/P(ID)/timer)
Marking
1 Tagging (Tag), see additional spec.
CLM223F- complete order code
131085-4D
rder code
erial no
.
codes
CLM223F-CF0110
123405G00
0 … 2000 mS/cm
-35 … 250°C
0/4…20mA
230 VAC 50/60 Hz 7.5 VA
-10 … +55°CIP 54/ IP 30
0/4…20mA
rot. class ambient temp.
utput 1 output 2
mains
meas. range
emperature
LIQUISYS M
conductivity
Made in Germany, D-70839 Gerlingen

Liquisys M CLM223F Identification
Endress+Hauser 7
If you have any questions, please contact your supplier or your sales centre responsible .
2.3 Certificates and approvals
2.3.1 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.
2.3.2 Explosion protection for zone 2
Application of transmitter as related electrical equipment in non-hazardous area or in simple
pressurized apparatus; application of sensor in hazardous area zone 2
2.3.3 CSA general purpose
C.M2.3-..2...
C.M2.3-..3...
C.M2.3-..7...
C.M2.3-..4...
C.M223-..6...
C.M253-..A...
ATEX II (3)G (Ex nL) IIC

Installation Liquisys M CLM223F
8Endress+Hauser
3 Installation
3.1 Quick installation guide
#Warning!
If the measuring point or parts of the measuring point are in explosion-hazardous areas you have to
follow the "Safety instructions for electrical apparatus for explosion-hazardous areas". These
instructions (XA194C/07/a3) are part of the scope of delivery.
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 F
• A sensor with or without an integrated temperature sensor
• A measuring cable CYK71 (conductive) or CLK5 (inductive)
Options: extension cable, junction box VBM
a0003613
Fig. 2: Complete measuring system Liquisys CLM223 F
1
2
Conductive sensor CLS21
Inductive sensor CLS54
3
4
Inductive sensor CLS52
Liquisys M CLM223 F
CAL REL
REL 1
REL 1
ALARM
REL 2
REL 2
E
1
3
4
2

Liquisys M CLM223F Installation
Endress+Hauser 9
3.2 Incoming acceptance, transport, storage
• Make sure the packaging is undamaged!
Inform the supplier about 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 delivery contents.
Keep the damaged products until the matter has been settled.
• Check that the scope of delivery is complete and agrees with your order and the
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 sales centre responsible.
3.3 Installation conditions
a0005735
Fig. 3: Panel-mounted instrument
90 / 3.54
139 / 5.47
96 / 3.78
6/
0.24
mm / inch
92 / 3.62
149.5 / 5.89

Installation Liquisys M CLM223F
10 Endress+Hauser
3.4 Installation instructions
The panel-mounted instrument is secured with the clamping screws supplied (see Fig. 4).
The necessary installation depth is approx. 165 mm (6.50").
a0005739
Fig. 4: Securing the panel-mounted instrument
1 Wall of the cabinet
2Seal
3Clampingscrews
* Required installation depth
3.5 Post-installation check
• After installation, check the transmitter for damage.
• Check whether the transmitter is protected against moisture and direct sunlight.
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

Liquisys M CLM223F Wiring
Endress+Hauser 11
4 Wiring
#Warning!
• The electrical connection must only be carried out by authorised technical personnel.
• Technical personnel must have read and understood the instructions in this manual and must
adhere to them.
• Ensure that there is no voltage at the power cable before beginning the connection work.

Wiring Liquisys M CLM223F
12 Endress+Hauser
4.1 Electrical connection
4.1.1 Connection diagram
The wiring diagram 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.
a0003607
Fig. 5: Electrical connection of the transmitter
A
B
C
D
E
F
Sensor (conductive)
Sensor (inductive)
Temperature sensor
Signal output 1 conductivity
Signal output 2 temperature
Binary input 1 (MRS)
G
H
I
J
K
L
Binary input 2 (MRS)
Aux. voltage output
Alarm (current-free contact position)
Relay 1 (current-free contact position)
Relay 2 (current-free contact position)
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
S
84
83
15
16
84
PE
83
L+
L–N
L1
~=
PE
15
16
85+
86 _
A
B
C
D
E
F
G
H
I
J
K
L

Liquisys M CLM223F Wiring
Endress+Hauser 13
!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:
– 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.
Panel-mounted instrument connection
a0003608
Fig. 6: Connection compartment sticker
"Caution!
• Terminals marked NC may not be wired.
• Unmarked terminals may not be wired.
Power supply of binary inputs
a0003610
Fig. 7: Power supply of binary inputs
A Hold / MRS (for function "MRS 4 measuring ranges" switches are digital coded
REL1
REL2
REL3
REL4
NC
NC
49
COM
COM
COM
COM
59
54
55
56
52
51
53
58
57
48
47
131084-4B
Binary
Binary
1
15 V
85
86
81
82
93
94
A
A

Wiring Liquisys M CLM223F
14 Endress+Hauser
4.1.2 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:
Structure and termination of the measuring cables
C07-CLM2x3xx-04-06-00-de-004.eps
Fig. 8: Structure of the special measuring cables
A Semiconductor layer
sc Screening
!Note!
For further information on the cables and junction boxes, please refer to the "Accessories" section.
Measuring cable connection
To connect a conductivity sensor, connect the measuring cable in accordance with the terminal
assignment to the terminals on the rear of the device (see connection sticker).
Sensor type Cable Extension
Two-electrode sensors with or without
temperature sensor Pt 100
CYK71 Junction box VBM + CYK71
Inductive sensors CLS50, CLS52, CLS54 Cable permanently attached
to sensor
Junction box VBM + CLK5
Maximum cable length
Conductivity measurement (conductive) max. 100 m (328 ft) with CYK71
Conductivity measurement (inductive) max. 55 m (180.46 ft) with CLK5 (sensor cable incl.)
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

Liquisys M CLM223F Wiring
Endress+Hauser 15
Example of connecting a conductivity sensor
4.1.3 Alarm contact
C07-CLM2x3xx-04-06-00-xx-007.eps
Fig. 9: Connection of conductive sensors
a0006611
Fig. 10: Connection of inductive sensors
C07-CxM2x3xx-04-06-00-xx-001.eps
Fig. 11: Recommended fail-safe switching for the alarm contact
A Normal operating status B Alarm condition
Normal operating status:
• Device in operation
• No error message present
(Alarm LED off)
Relay energized
Contact 42/43 closed
Alarm condition
• Error message present (alarm LED red)
or
• Device defective or voltage-free (alarm LED off)
Relay de-energized
Contact 41/42 closed
GN WH YE
GN WH YE
BK
BK
CYK71/CPK9
J
83 16 15 84
23 1
11 12 13
PE
RD WH
CLK 5
J
83 16 15 84
11 12 13
GN WH YE BU RD RD BU
S
41
42
43
41
42
43
AB

Wiring Liquisys M CLM223F
16 Endress+Hauser
4.2 Post-connection check
After wiring up the electrical connection, carry out the following checks:
Device status and specifications Remarks
Are the transmitter or the cable externally damaged? Visual inspection
Electrical connection Remarks
Are the installed cables strain-relieved? Bracket joint for cable ties at the rear plate
No loops and cross-overs in the cable run?
Are the signal cables correctly connected acc. to the wiring diagram?
Are all screw terminals tightened?
Are all cable entries installed, tightened and sealed?
Are the PE distributor rails grounded (present at version CF)? Grounding at place of installation

Liquisys M CLM223F Operation
Endress+Hauser 17
5Operation
5.1 Display and operating elements
5.1.1 Display
LED display
LC display
Indicates the current operating mode, "Auto" (green LED) or "Manual"
(yellow LED)
Indicates the activated relay in the "Manual" mode (red LED)
Indicates the working status of relay 1 and 2
LED green: measured value within the permitted limit, relay inactive
LED red: measured value outside the permitted limit, relay active
Alarm display, e.g. for continuous limit value overshoot, temperature
sensor failure or system error (see error list)
a0003611-en
Fig. 12: LC display transmitter
1
2
3
4
5
Indicator for measuring mode (normal operation)
Indicator for calibration mode
Indicator for setup mode (configuration)
Indicator for "Hold" mode (current outputs remain at
last current state)
Indicator for receipt of a message for devices with
communication
6
7
8
9
10
Function code display
In measuring mode: measured variable
In setup mode: configured variable
In measuring mode: secondary measured value
In setup/calibr. mode: e.g. setting value
"Error": error display
Sensor symbol
REL 1
REL 2
9999 mS/cm
R2
123 45
6
7
8
9
10
On value

Operation Liquisys M CLM223F
18 Endress+Hauser
5.1.2 Operating elements
a0003609-en
Fig. 13: Operating elements
1 LC display for displaying the measured values and configuration data
2 Field for user labelling
3 4 main operating keys for calibration and device configuration
4 Changeover switch for automatic/manual mode of the relays
5 LEDs for limit contactor relay (switch status)
6 LED for alarm function
7 Display of the active contact and key for relay changeover in manual mode
5.1.3 Key assignment
9999
mS/cm
R2
1
2
3
4
5
6
7
On value
CAL key
When you press the CAL key, the device first prompts you for the
calibration access code:
• Code 22 for calibration
• Code 0 or any other code for reading the last calibration data
Use the CAL key to accept the calibration data or to switch from field to
field within the calibration menu.
ENTER key
When you press the ENTER key, the device first prompts you for the setup
mode access code:
• Code 22 for setup and configuration
• Code 0 or any other code for reading all configuration data.
The ENTER key has several functions:
• Calls up the Setup menu from the measuring mode.
• Saves (confirms) data entered in the setup mode.
• Moves on within function groups.

Liquisys M CLM223F Operation
Endress+Hauser 19
PLUS key and MINUS key
In the setup mode, the PLUS and MINUS keys have the following
functions:
• Selection of function groups.
!Note!
Press the MINUS key to select the function groups in the order given in
the "System configuration" section.
• Configuration of parameters and numerical values
• Operation of the relay in manual mode
In the measuring mode, you get the following sequence of functions by
repeatedly pressing the PLUS key:
1. Temperature display in F
2. Temperature display hidden
3. Display of the uncompensated conductivity
4. Return to basic settings
In the measuring mode, the following is displayed in sequence by
repeatedly pressing the MINUS key:
1. Current errors are displayed in rotation (max. 10).
2. Once all the errors have been displayed, the standard measurement
display appears. In the function group F, an alarm can be defined
separately for each error code.
REL key
In the manual mode, you can use the REL key to switch between the relay
and the manual start of cleaning.
In the automatic mode, you can use the REL key to read out the switch-on
points assigned to the relay in question.
Press the PLUS key to jump to the settings of the next relay. Use the REL
key to get back to the display mode (automatic return after 30 s).
AUTO key
You can use the AUTO key to switch between automatic mode and manual
mode.
Escape function
If you press the PLUS and MINUS key simultaneously, you return to the
main menu or are taken to the end of calibration if calibrating. If you press
the PLUS and MINUS key again, you return to the measuring mode.
Locking the keyboard
Press the PLUS and ENTER key for at least 3 s to lock the keyboard against
any unauthorised data entry. All the settings can continue to be read.
The code prompt displays the code 9999.
REL 1
REL 2

Operation Liquisys M CLM223F
20 Endress+Hauser
5.2 Local Operation
5.2.1 Automatic/manual mode
The transmitter normally operates in automatic mode. Here, the relays are triggered by the
transmitter. In the manual mode, you can trigger the relays using the REL key or start the cleaning
function.
How to change the operating mode:
!Note!
• The operating mode remains in effect even after a power failure.
• The manual mode has priority over all other automatic functions (Hold).
• Hardware locking is not possible in the manual mode.
• The manual settings are kept until they are actively reset.
• Error code E102 is signalled in the manual mode.
Unlocking the keyboard
Press the CAL and MINUS key for at least 3 s to unlock the keyboard.
The code prompt displays the code 0.
1. The transmitter is in Automatic mode. The top LED beside the AUTO
key is lit.
2. Press the AUTO key. The bottom LED beside the AUTO key lights up.
3. To enable the manual mode, enter the code 22 via the PLUS and
MINUS keys.
4. Select the relay or the function.
You can use the REL key to switch between the relays. The relay
selected and the switch status (ON/OFF) is displayed on the second
line of the display.
In the manual mode, the measured value is displayed continuously (e.g.
for measured value monitoring for dosing functions).
5. Switch the relay. It is switched on with PLUS and switched off with
MINUS.
The relay remains in its switched state until it is switched over again.
6. Press the AUTO key to return to the measuring mode, i.e. to the
automatic mode. All the relays are triggered again by the transmitter.