TI01444C/07/EN/01.19
71436390
2019-01-31
Products
Solutions Services
Technical Information
CCS120D
Digital sensor with Memosens technology for
determining total chlorine
CCS120D offers high-precision measurement with
long-term stability to guarantee optimum process
monitoring.
Application
Memosens CCS120D measures total chlorine in:
• Wastewater treatment plants
– Disinfection monitoring and control in wastewater outlet
– Reuse of outlet water
• Utilities of all industries
All disinfection measuring points
Your benefits
• Easy handling thanks to Memosens digital technology
• Enables predictive maintenance due to storage of sensor and process-specific data
• Low maintenance thanks to fast exchange of membrane cap and electrolyte
• Flexible installation in CYA112 immersion assembly or CCA250 flow assembly
• Easy combination with other relevant parameters of liquid analysis thanks to
connection to the Liquiline multichannel transmitter
Other advantages of Memosens technology
• Maximum process safety
• Data security thanks to digital data transmission
• Very easy to use as sensor data saved in the sensor
• Recording of sensor load data in the sensor enables predictive maintenance
Function and system design
CCS120D
Measuring principle
Mode of operation
Total chlorine levels are determined in accordance with the amperometric measuring principle.
In this context, the following compounds are referred to collectively as total chlorine:
• Free available chlorine: hypochlorous acid (HOCl), hypochlorite ions (OCl-)
• Combined chlorine (chloramines)
• Organic combined chlorine, e.g. cyanuric acid derivatives
Chloride (Cl-) is not recorded.
The sensor is a membrane-covered, two-electrode sensor. A platinum working electrode is used as
the working electrode. A counter electrode coated in silver halide is used as the counter and
reference electrode.
The membrane cap, which is filled with electrolyte, constitutes the measuring chamber. The
measuring electrodes are immersed in the measuring chamber. The measuring chamber is separated
from the medium by means of a microporous membrane. The chlorine compounds contained in the
medium diffuse through the sensor membrane.
The constant polarization voltage present between the two electrodes causes the electrochemical
reaction of the chlorine compounds at the working electrode. Electron donation at the working
electrode and electron acceptance at the counter-electrode cause a current to flow. In the operational
range of the sensor, this current flow is proportional to the chlorine concentration under constant
conditions and is only slightly pH-dependent in the case of this sensor type. The transmitter uses the
current signal to calculate the measured variable for concentration in mg/l (ppm).
The sensor consists of:
• Membrane cap (measuring chamber with membrane)
• Sensor shaft with counter-electrode with large surface area and a working electrode embedded in
plastic
The electrodes are in an electrolyte which is separated from the medium by a membrane. The
membrane prevents the electrolyte from leaking and protects against contaminant penetration.
The measuring system is calibrated by means of a colorimetric comparison measurement in
accordance with the DPD method for total chlorine. The calibration value determined is entered in
the transmitter.
Cross-sensitivities
Measuring system
1)
Oxidants, such as bromine, iodine, ozone, chlorine dioxide, permanganate, peracetic acid and
hydrogen peroxide result in higher readings than expected.
Reducing agents, such as sulfides, sulfites, thiosulfates and hydrazine, result in lower readings than
expected.
A complete measuring system comprises:
• CCS120D disinfection sensor (membrane-covered)
• Flexdip CYA112 immersion assembly
• Measuring cable CYK10, CYK20
• Transmitter, e. g. Liquiline CM44x with firmware version 01.06.08 or higher or CM44xR with
firmware version 01.06.08 or higher
• Optional: extension cable CYK11
• Optional: Flowfit CCA250 flow assembly (a pH/ORP sensor can additionally be installed here)
1) The listed substances have been tested individually and in different concentrations. A reaction to a mixture of substances was not tested.
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CCS120D
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A0038294
1 Example of a measuring system
1 CYH112 holder, main pipe
2 Transmitter
3 Protective cover
4 CYH112 holder, transverse pipe
5 Hook-and-loop tape
6 CYA112 assembly (gray background)
7 Disinfection sensor CCS120D (membrane-covered, ⌀25 mm)
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CCS120D
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2
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1
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MEMO SENS
Dependability Reliability
A0038946
2 Example of a measuring system
1 Liquiline CM44x transmitter
2 Power cable for transmitter
3 Disinfection sensor CCS120D (membrane-covered, ⌀25 mm)
4 Flowfit CCA250 flow assembly
5 Inlet to Flowfit CCA250 flow assembly
6 Proximity switch (optional)
7 Measuring cable CYK10
Memosens
Memosens makes your measuring point safer and more reliable:
• Non-contact, digital signal transmission enables optimum galvanic isolation
• Dust- and waterproof (IP 68)
• Sensor can be calibrated in a lab, thus increasing the availability of the measuring point in the
process
• 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 at high temperatures
– Calibration history
Maintainability
Easy handling
Sensors with Memosens technology have integrated electronics that store calibration data and other
information (e. g. total hours of operation or operating hours under extreme measuring conditions).
Once the sensor has been connected, the sensor data are transferred automatically to the transmitter
and used to calculate the current measured value. As the calibration data are stored in the sensor,
the sensor can be calibrated and adjusted independently of the measuring point. The result:
• Easy calibration in the measuring lab under optimum external conditions increases the quality of
the calibration.
• Pre-calibrated sensors can be replaced quickly and easily, resulting in a dramatic increase in the
availability of the measuring point.
• Thanks to the availability of the sensor data, maintenance intervals can be accurately defined and
predictive maintenance is possible.
• The sensor history can be documented on external data carriers and in evaluation programs,.
• Thus, the current application of the sensors can be made to depend on their previous history.
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CCS120D
GN/YE
YE
GN
BN
WH
GND
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–
Com A
Com B
GY
Safety
Data security thanks to digital data transmission
Memosens technology digitizes the measured values in the sensor and transmits the data to the
transmitter via a non-contact connection that is free from potential interference. The result:
• Automatic error message if sensor fails or connection between sensor and transmitter is
interrupted
• Immediate error detection increases measuring point availability
Input
Measured values
Measuring ranges
Signal current
Electrical connection
Total chlorine
[mg/l, μg/l, ppm, ppb]
• Free available chlorine:
– Hypochlorous acid (HOCl)
– Hypochlorite ions (OCl-)
• Combined chlorine (chloramines)
• Organically combined chlorine (e.g. cyanuric acid derivatives)
Temperature
[°C, °F]
0.1 to 10 mg/l (ppm)
The sensor is not suitable for checking the absence of chlorine.
2.4 to 5.4 nA per 1 mg/l (ppm)
Power supply
The electrical connection to the transmitter is established using measuring cable CYK10 or CYK20.
A0024019
3 Measuring cable CYK10/CYK20
A0018861
4 Electrical connection, M12 plug
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Performance characteristics
CCS120D
Reference operating conditions
Response time
Measured value resolution of sensor
Nominal slope
Long-term drift
Polarization time
Operating time of the electrolyte
Operating time of membrane cap
Temperature 30 °C (86 °F)
pH value pH 7.2
T90 approx. 60 s (with increasing and decreasing concentration)
0.01 mg/l (ppm)
4 nA per 1 mg/l (ppm) (under reference operating conditions)
< ±3 % per month
Initial commissioning
After replacing the membrane cap Typically 1 to 6 h
Recommissioning Pour approx. 4 to 24 h
3 to 6 months (depending on water quality)
With electrolyte
Without electrolyte > 2 years (25 °C (77 °F))
Typically 3 to 6 months, depending on water quality
Up to 24 h
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CCS120D
15°
15°
B
A
Installation
Orientation
Do not install upside-down!
Install the sensor in an assembly, support or appropriate process connection at an angle of at
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least 15 ˚ to the horizontal.
Other angles of inclination are not permitted.
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Follow the instructions for installing the sensor in the Operating Instructions of the assembly
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used.
A Permitted orientation
B Incorrect orientation
A0037695
Immersion depth
Installation instructions Installation in Flowfit CCA250 flow assembly
At least 70 mm (2.76 in)
The Flowfit CCA250 flow assembly is designed for installing the sensor. It allows a pH and an ORP
sensor to also be installed, in addition to the total chlorine sensor. A needle valve controls the flow
rate in the range of 30 to 120 l/h (7.9 to 31.7 gal/h).
Please note the following during installation:
The flow rate must be at least 30 l/h (7.9 gal/h). If the flow drops below this value or stops
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completely, this can be detected by an inductive proximity switch.
If the medium is returned to an overflow basin, pipe or similar, the resulting counterpressure on
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the sensor must not exceed 1 bar (14.5 psi) and must remain constant.
Negative pressure at the sensor, e.g. due to medium being returned to the suction side of a
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pump, must be avoided.
To avoid buildup, heavily contaminated water should also be filtered.
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Additional installation instructions can be found in the Operating Instructions for the assembly.
Installation in other flow assemblies
When using other flow assemblies, please ensure the following:
A flow velocity of at least 15 cm/s (0.49 ft/s) must always be ensured at the membrane.
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The flow direction is upwards. Transported air bubbles must be removed so that they do not
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collect in front of the membrane.
The flow must be directed to the membrane.
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Pay attention to the additional installation instructions in the Operating Instructions for the
assembly.
Installation in Flexdip CYA112 immersion assembly
Alternatively, the sensor can be installed in an immersion assembly with threaded connection
NPT ¾", e. g. CYA112.
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Please note the following during installation:
Do not twist the sensor measuring cable. Recommendation: use a quick release fastener.
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To improve the sealing effect, we recommend you wrap a thin PTFE tape around the thread for
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assemblies with an NPT ¾" thread.
Additional installation instructions can be found in the Operating Instructions for the assembly.
Environment
CCS120D
Ambient temperature
Storage temperature
Degree of protection
Process temperature
Process pressure
pH range
Conductivity range
Flow
5 to 45 °C (41 to 113 °F), no temperature fluctuations
Without electrolyte
IP68
–20 to 60 °C (–4 to 140 °F)
Process
5 to 45 °C (41 to 113 °F), no temperature fluctuations
Maximum 1 bar (14.5 psi), if installed in the Flowfit CCA250 assembly
pH5.5 to 9.5
pH dependency: increase from pH 7 to pH 8: approx. -10 % for free chlorine
0.03 to 40 mS/cm
CCA250
• Optimum 40 to 60 l/h (10.6 to 15.8 gal/h)
• Minimum 30 l/h (7.9 gal/h)
• Maximum 100 l/h (26.4 gal/h)
Minimum flow
• Optimum 20 to 30 cm/s
• Minimum 15 cm/s
• Maximum 50 cm/s
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CCS120D
148 (5.83)
35
(1.38)
!36 (1.42)
!29 (1.14)
NPT ¾
74 (2.9)
!28.8 (1.13)
!25 (0.98)
Dimensions
Mechanical construction
Weight
Materials
Cable specification
mark
A0038260
5 Dimensions in mm (in)
75 g (2.65 oz)
Sensor shaft
Membrane PET
Membrane cap PPE
Clamping ring PTFE
Hose seal Silicone
Electrode body PMMA
max. 100 m (330 ft), incl. Cable extension
PVC
Certificates and approvals
Declaration of conformity
The product meets the requirements of the harmonized European standards. As such, it complies
with the legal specifications of the EU directives. The manufacturer confirms successful testing of the
product by affixing to it the mark.
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CCS120D
Ex approvals
Product page
Product Configurator
2)
cCSAus NI Cl. I, Div. 2
This product complies with the requirements defined in:
• UL 61010-1
• ANSI/ISA 12.12.01
• FM 3600
• FM 3611
• CSA C22.2 NO. 61010-1-12
• CSA C22.2 NO. 213-16
• Control drawing: 401204
Ordering information
www.endress.com/ccs120d
On the product page there is a Configure button to the right of the product image.
1. Click this button.
The Configurator opens in a separate window.
2. Select all the options to configure the device in line with your requirements.
In this way, you receive a valid and complete order code for the device.
3. Export the order code as a PDF or Excel file. To do so, click the appropriate button on the right
above the selection window.
Scope of delivery
For many products you also have the option of downloading CAD or 2D drawings of the
selected product version. Click the CAD tab for this and select the desired file type using
picklists.
The delivery comprises:
• Disinfection sensor (membrane-covered)
• Bottle with electrolyte (50 ml (1.69 fl.oz)) and nozzle
• Replacement membrane cap
• Operating Instructions
• Manufacturer's certificate
2) Only if connected to CM44x(R)-CD*
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CCS120D
Accessories
The following are the most important accessories available at the time this documentation was
issued.
For accessories not listed here, please contact your Service or Sales Center.
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Device-specific accessories
Kit CCS120/120D, maintenance kit
• 2 x membrane caps and 1 x electrolyte 50 ml (1.69 fl.oz)
• Order number: 71412917
Kit CCS120/120D, electrolyte
• 1 × electrolyte 50 ml (1.69 fl.oz)
• Order number: 71412916
Kit CCS120/120D, Viton ring set
• 2 × Viton rings
• Order number: 71105209
Memosens data cable CYK10
• For digital sensors with Memosens technology
• Product Configurator on the product page: www.endress.com/cyk10
Technical Information TI00118C
Memosens data cable CYK11
• Extension cable for digital sensors with Memosens protocol
• Product Configurator on the product page: www.endress.com/cyk11
Technical Information TI00118C
Memosens laboratory cable CYK20
• For digital sensors with Memosens technology
• Product Configurator on the product page: www.endress.com/cyk20
Flowfit CCA250
• Flow assembly for chlorine and pH/ORP sensors
• Product Configurator on the product page: www.endress.com/cca250
Technical Information TI00062C
Flexdip CYA112
• Immersion assembly for water and wastewater
• Modular assembly system for sensors in open basins, channels and tanks
• Material: PVC or stainless steel
• Product Configurator on the product page: www.endress.com/cya112
Technical Information TI00432C
Photometer PF-3
• Compact hand-held photometer for determining the free available chlorine and total chlorine
concentration
• Color-coded reagent bottles with clear dosing instructions
• Order No.: 71257946
COY8
Zero-point gel for oxygen and disinfection sensors
• Oxygen-free and chlorine-free gel for the verification, zero point calibration and adjustment of
oxygen and disinfection measuring points
• Product Configurator on the product page: www.endress.com/coy8
Technical Information TI01244C
Endress+Hauser 11
www.addresses.endress.com
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