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Technical Information
Liquiline CM14
4-wire-controller based on digital Memosens technology for
pH/ORP, conductivity and oxygen
Application
Liquiline CM14 is a 4-wire-controller in compact design for
installation in panels or cabinets.
Application
• Wastewater treatment
• Water treatment and drinking water monitoring
• Ion exchanger
• Surface water monitoring
TI494C/07/EN/01.11
71132861
Your benefits
• Compact instrument in 48 x 96 mm panel mounted housing
• Easy to operate
• Memosens technology
– Use of precalibrated sensors
– Safety thanks to active detection of cable break
• Two contacts for limit contactor
• Second current output for temperature
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Function and system design
Memosens technology Memosens makes your measuring point safer and more reliable:
• Non-contact, digital signal transmission enables optimum galvanic isolation
• No galvanic corrosion
• Completely watertight
• Laboratory sensor calibration possible, thus increasing measured value availability
• Predictive maintenance thanks to recording of sensor data, e.g.:
– Total hours of operation
– Hours of operation with very high or very low measured values
– Hours of operation with high temperatures
– Number of steam sterilizations
– Sensor condition
pH/ORP measurement
Liquiline CM14
pH/ORP measurement with Liquiline CM14
Functions of the basic version
Mesaurement of pH and ORP value with glas elctrodes.
This is selected via the menu. The temperature is displayed alternatingly.
Process Check System (PCS)
The live check issues an alarm when the sensor signal does not change over a defined period of time. This may
be caused by blocking, passivation, separation from the process, etc.
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Liquiline CM14
Conductivity measurement Conductive or inductive
Two versions are available for the measurement with conductive (two electrode) sensors or inductive sensors.
An inductive sensor is recommended for the measurement of high conductivities, for concentration
measurement or adhering media.
a0015279
The measuring range of a measuring point is determined by the connected digital Memosens sensor.
Sensor Cell constant Measuring range
CLS15D-A1A1 k = 0.01 1/cm 0.05 μS/cm to 20 μS/cm
CLS15D-B1A1 k = 0.1 1/cm 0.1 μS/cm to 200 μS/cm
CLS16D-3C1P1 k = 0.1 1/cm 0.04 μS/cm to 500 μS/cm
CLS21D-C1E1 k = 1.0 1/cm 10 μS/cm to 20 mS/cm
CLS50D-AA1B11 k = 1.98 1/cm 0.1 mS/cm to 2000 mS/cm
Measurement of conductivity or resistivity (conductive)
This is selected via the menu.
Temperature compensation
The following temperature compensation selections are available:
• Linear
• NaCl curve according to IEC 746
• Ultrapure water NaCl (neutral compensation)
• Ultrapure water HCl (acid compensation, also ammonia)
Ultrapure water monitoring acc. to USP (United States Pharmacopeia) and EP (European
Pharmacopoeia)
Ultrapure water monitoring according to USP <645> and EP means that the uncompensated conductivity
value and the temperature are measured and the results are compared by a table.
The controller comes with the following functions:
• Monitoring of "Water for Injection" (WFI) according to USP and EP
• Monitoring of "Purified Water" (PW) according to EP
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Oxygen measurement Measurement of the oxygen content und setting of the sea level
2
3
1
mS/cm
Y
1
Y
2
The oxygen content is displayed in mg/l. The setting of the sea level is performed in m or ft.
This is selected via the menu. The temperature is displayed alternatingly.
Liquiline CM14
Oxygen measurement with Liquiline CM14
Sensor Measuring range
COS51D 0.01 to 100 mg/l
COS22D-*1 0.01 to 60 mg/l
Measuring system A complete measuring system comprises:
• The controller Liquiline CM14
• An assembly with sensor
• A measuring cable
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Example of measuring system with Liquiline CM14
1 Assembly with sensor
2 Measuring cable
3 Controller Liquiline CM14
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Liquiline CM14
Input
Measuring variables --> Documentation of the connected sensor
Measuring range --> Documentation of the connected sensor
Input types Digital sensor inputs
Cable specification Cable type
Memosens data cable CYK10 or sensor fixed cable, each with cable end sleeves
Cable length
Max. 100 m (330 ft)
Output
Output signal 2 x 0/4 to 20 mA active, potentially isolated from one another and from the sensor circuit
Load Max. 500 Ω
Linearisation/transmission bevaviour
Alarm output The alarm output is designed as "open collector".
linear
Current max. 200 mA
Voltage max. 30 V DC
Current output, active
Span 0 to 23 mA
Signal characteriziation linear
Electrical specification Output voltage
Max. 24 V
Cable specification Cable type
Recommended: shielded cable
Cross section
2
max. 1.5 mm
(16 AWG)
Relay output
Relay type 2 changeover contacts
Switching current max. 3 A @ 24 V DC
max. 3 A @ 253 V AC
min. 100 mW (5 V / 10 mA)
Cable specification Cross section
2
Max. 2.5 mm
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(14 AWG)
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Electrical connection
133
0/4...20 mA
0/4...20 mA
134
233
234
+
-
+
-
R12
R11
R13
R22
R21
R23
YE
GN
WH
BN
+
-
98
97
88
87
SHD
SHD
D11
D12
Sensor
Com B
Com A
U-
U+
max 30 V
200 mA
Liquiline CM14
Power supply
Electrical connection of controller
Terminal Description
87 Connection Memosens cable, brown, sensor power U+
88 Connection Memosens cable, white, sensor power U-
97 Connection Memosens cable, green, Com A
98 Connection Memosens cable, yellow, Com B
SHD Connection Memosens cable, shield
D11 Connection alarm output, +
D12 Connection alarm output, -
L/+
Connection controller powerN/-
*PE
133 Connection analog output 1, +
134 Connection analog output 1, -
233 Connection analog output 2, +
234 Connection analog output 2, -
Power supply Wide range power supply 24 V to 230 V AC/DC (-20 % / +10 %) 50/60 Hz
R11, R12, R13 Connection relay 1
R21, R22, R23 Connection relay 2
Note!
The controller has no power switch
• A clearly marked mains disconnecting device must be installed in the vicinity of the instrument.
• Protect the controller by an appropriate fuse.
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Power consumption Max. 13.8 VA / 6.6 W
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Liquiline CM14
92 (3.62)
45 (1.77)
mm (inch)
Performance characteristics
Response time Current output
t90 = max. 500 ms for an increase from 4 to 20 mA
Reference temperature 25 °C (77 °F)
Measuring error, input --> Documentation of the connected sensor
Resolution current output > 13 bit
Repeatability --> Documentation of the connected sensor
Installation conditions
Installation instructions Mounting location
Panel, cutout 92 x 45 mm (3.62 x 1.77 ")
Max. panel thickness 26 mm (1")
Mounting orientation
The mounting orientation is determined by the display readability
Max. angle of view +/- 45° of the display center axis in each direction.
Panel cutout
Environment
Ambient temperature range –10 to +60 °C (14 to 140 °F)
Storage temperature range –40 to +85 °C (-40 to 185 °F)
Altitude <2000 m (6561 ft) above sea level
Electromagnetic compatibility Interference emission and interference immunity as per EN 61326-1:2006, class A for industrial use
Ingress protection Front
IP65 / NEMA 4X
Body
Protection against contact IP20
Relative humidity 5 to 85 %, non-condensing
a0010351
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Dimensions
96 (3.78)
48 (1.89)
16.7
(0.66)
151.8 (5.98)
118.6 (4.67)
41.9 (1.65)
43.9 (1.73)
90.9 (3.56)
88.9 (3.50)
mm (inch)
Liquiline CM14
Mechanical construction
Dimensions
Weight 0.3 kg (0.66 lbs)
Materials
Housing, body: Polycarbonate
Front membrane: Polyester, UV resistant
Terminals
max. 2.5 mm
2
(22-14 AWG; torque: 0.4 Nm (3.5 lb in)) Mains, relays
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Liquiline CM14
Operating elements
Operability
Display and operating elements
1 LC display for measuring values and configuration data
2 Status LED power connected
3 Status LED alarm function
4 Status LED limit contactor relay 1
5 Status LED limit contactor relay 2
6 Dot matrix display for measuring units and menu positions
7Operating keys
Certificates and approvals
4 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 4 symbol.
a0015311
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Ordering information
Liquiline CM14
Product structure
CM14- order code
HC PWIS free, PWIS = paint- wetting impairment substances
LU UL listed
Z1 Tagging (TAG), see additional spec.
Approval
AA Non-hazardous area
CA CSA C/US general purpose
Sensor input
K Digital, Memosens conductivity conductive
L Digital, Memosens conductivity inductive
M Digital, Memosens pH, ORP (glass)
O Digital, Memosens oxygen amperom.
Service
Additional approval
Marking
Note!
To complete your order code, simply add the optional features to the end of order code. If you have any
questions, please contact your local sales office.
Scope of delivery The scope of delivery comprises:
• Controller CM14 in ordered version
• Installation kit
• Operating instructions
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Liquiline CM14
Accessories
Measuring cable CYK10 Memosens data cable
• For digital sensors with Memosens technology
• Ordering according to product structure, see Technical Information (TI376C/07/en)
Sensors Glass electrodes pH measurement
Orbisint CPS11D
• pH electrode for process applications with Memosens technology
• Dirt-repellent PTFE diaphragm
• Ordering acc. to product structure, see Technical Information (TI028C/07/en)
Orbipore CPS91D
• pH sensor with Memosens technology
• With open aperture for media with high dirt load
• Ordering acc. to product structure, see Technical Information (TI375C/07/en)
Orbipac CPF81D
• Compact pH sensor for installation or immersion operation in process water and wastewater
• Ordering acc. to product structure, see Technical Information (TI191C/07/en)
ORP sensors
Orbisint CPS12D
• ORP sensor with Memosens technology
• Dirt-repellent PTFE diaphragm
• Ordering acc. to product structure, see Technical Information (TI367C/07/en)
Orbipore CPS92D
• ORP sensor with Memosens technology
• With open aperture for media with high dirt load
• Ordering acc. to product structure, see Technical Information (TI435C/07/en)
Orbipac CPF82D
• Compact ORP sensor for installation or immersion operation in process water and wastewater
• Ordering acc. to product structure, see Technical Information (TI191C/07/en)
Conductivity sensors, conductive
Condumax W CLS15D
• For measurement in pure and ultrapure water and in Ex applications
• Ordering according to product structure, see Technical Information TI109C/07/en
Condumax H CLS16D
• Hygienic sensor for measurement in pure and ultrapure water and in Ex applications
• With EHEDG and 3A certificates
• Ordering according to product structure, see Technical Information TI227C/07/en
Condumax W CLS21D
• Two-electrode sensor in fixed cable and plug-in head version
• Ordering according to product structure, see Technical Information TI085C/07/en
Conductivity sensors, inductive
Indumax CLS50D
• High-stability inductive conductivity sensor for standard, Ex and high-temperature applications
• Memosens technology
• Order as per product structure, see Technical Information TI182C/07/en
Oxygen sensors
Oxymax COS51D
• Amperometric sensor for dissolved oxygen, with Memosens technology
• Ordering acc. to product structure, see Technical Information (TI413C/07/en)
Oxymax H COS22D
• Sterilizable sensor for dissolved oxygen, with Memosens technology
• Ordering acc. to product structure, see Technical Information (TI446C/07/en)
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TI494C/07/EN/01.11
71132861
Printed in Germany / FM+SGML 6.0 / DT
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