Endress+Hauser CCS120D Operating Instructions Manual Download Page 32 | Manualshive

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Maintenance

CCS120D

32

Hauser

3. Secure protection cap by rotating the top part of the protection cap.



A0037887

 14

Securing protection cap by rotating the top part

9.2.5

Regenerating the sensor

During measurement, the electrolyte in the sensor is gradually exhausted due to chemical

reactions. The gray-brown silver halide layer that is applied to the counter electrode at the

factory continues to grow during sensor operation. However, this has no effect on the reaction

taking place at the working electrode.

A change in the color of the silver halide layer indicates an effect of the reaction that is taking

place. Carry out a visual inspection to ensure that the gray-brown color of the counter

electrode has not changed. If the color of the counter electrode has changed, e.g. if it is

spotted, white or silvery, the sensor must be regenerated.

‣

Send the sensor to the manufacturer for regeneration.

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Summary of Contents for CCS120D

Page 1: ...Products Solutions Services Operating Instructions CCS120D Digital sensor with Memosens technology for determining total chlorine BA01950C 07 EN 02 19 71461435 2019 12 31 ...

Page 2: ......

Page 3: ... check 22 6 Electrical connection 22 6 1 Connecting the sensor 23 6 2 Ensuring the degree of protection 23 6 3 Post connection check 23 7 Commissioning 24 7 1 Function check 24 7 2 Filling the membrane cap with electrolyte 24 7 3 Sensor polarization 24 7 4 Sensor calibration 24 8 Diagnostics and troubleshooting 26 9 Maintenance 28 9 1 Maintenance schedule 28 9 2 Maintenance tasks 28 10 Repair 33 1...

Page 4: ...uation 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 A...

Page 5: ...CCS120D About this document Endress Hauser 5 1 2 1 Symbols on the device Symbol Meaning Reference to device documentation Minimum immersion depth ...

Page 6: ... and have an adverse effect on taste as well as generating unnecessary costs The sensor was specifically developed for this application and is designed for continuous measurement of total chlorine in water In conjunction with measuring and control equipment it allows optimal control of disinfection In this context the following compounds are referred to collectively as total chlorine Free availabl...

Page 7: ...al 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 unint...

Page 8: ...lve Guarantees a defined and consistent electrolyte film between working electrode and membrane Sensor shaft with Large counter electrode Working electrode embedded in plastic Embedded temperature sensor 6 1 7 4 2 3 5 A0037693 1 Sensor structure 1 Memosens plug in head 2 NPT thread 3 O ring 4 Sensor shaft 5 Pressure relief valve elastic 6 Membrane cap 7 Sensor membrane 3 1 1 Measuring principle To...

Page 9: ...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 Th...

Page 10: ...measured value Increases in temperature result in a higher measured value approx 4 per K Decreases in temperature result in a lower measured value Use of the sensor in combination with the Liquiline enables automatic temperature compensation ATC Recalibration in the case of temperature changes is not necessary 1 If automatic temperature compensation is disabled at the transmitter the temperature m...

Page 11: ...oxide 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 2 The listed substances have been tested with different concentrations An additive effect has not been investigated ...

Page 12: ...d 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 4 2 Product identification 4 2 1 Nameplate The nameplate provides you with the following information on your device Manufacturer identification Extended order code Serial number Safety information an...

Page 13: ... Manufacturer s certificate 4 2 6 Certificates and approvals mark 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 EAC The product has been certified according to guidelines TP TC 004 2011 and ...

Page 14: ...n an assembly support or appropriate process connection at an angle of at least 15 to the horizontal Other angles of inclination are not permitted Follow the instructions for installing the sensor in the Operating Instructions of the assembly used 15 15 B A A0037695 A Permitted orientation B Incorrect orientation 5 1 2 Immersion depth At least 70 mm 2 76 in ...

Page 15: ...CCS120D Installation Endress Hauser 15 5 1 3 Dimensions 148 5 83 35 1 38 36 1 42 29 1 14 NPT 74 2 9 28 8 1 13 25 0 98 A0038260 3 Dimensions in mm in ...

Page 16: ...nfection 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 ...

Page 17: ...4 5 6 7 A0038294 4 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 ...

Page 18: ...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 ...

Page 19: ... the protection cap is attached carefully remove it from sensor 1 When supplied to the customer and when in storage the sensor is fitted with a protection cap First release just the top part of the protection cap by turning it A0037884 6 Releasing top part of protection cap by turning 2 Carefully remove protection cap from sensor A0037885 7 Carefully remove protection cap ...

Page 20: ...ctrolyte can be decanted as easily as possible with minimum bubbles Smaller air bubbles are not a problem Larger air bubbles rise to the upper edge of the membrane cap Filling the membrane cap with electrolyte The sensor is dry when delivered from the factory Before using the sensor fill the membrane cap with electrolyte 1 Open the electrolyte bottle Screw the nozzle onto the electrolyte bottle 2 ...

Page 21: ...ely this can be detected by an inductive proximity switch If the medium is fed back into an overflow basin pipe or similar the resulting counterpressure on the sensor may not exceed 1 bar 14 5 psi 2 bar abs 29 psi abs and must remain constant Negative pressure at the sensor e g due to medium being returned to the suction side of a pump must be avoided To avoid buildup heavily contaminated water sh...

Page 22: ...ssemblies with an NPT thread Additional installation instructions can be found in the Operating Instructions for the assembly 5 3 Post installation check 1 Check the membrane to ensure it is sealed and undamaged Replace if necessary 2 Is the sensor installed in an assembly and not suspended from the cable The sensor may be installed only in an assembly or directly via the process connection 6 Elec...

Page 23: ...electrical safety EMC interference immunity agreed for this product can no longer be guaranteed due for example to covers being left off or cable ends that are loose or insufficiently secured 6 3 Post connection check Device condition and specifications Notes Are the sensor assembly or cables free from damage on the outside Visual inspection Electrical connection Notes Are the mounted cables strai...

Page 24: ...lectrolyte Fill the membrane cap with electrolyte The sensor is dry when delivered from the factory Fill the membrane cap with electrolyte before commissioning the sensor 20 7 3 Sensor polarization The voltage applied by the transmitter between the working electrode and counter electrode polarizes the surface of the working electrode Therefore after switching on the transmitter with the sensor con...

Page 25: ...n the following cases After replacing the membrane cap After replacing electrolyte The slope of the sensor is strongly influenced by the application conditions The interval for the slope calibration must be adjusted accordingly Repeat the slope calibration at regular intervals Recommended calibration intervals 28 1 Ensure that the pH value and temperature of the medium are constant 2 Take a repres...

Page 26: ...ignificantly from that of the DPD method first consider all possible malfunctions of the photometric DPD method see Operating Instructions for photometer If necessary repeat the DPD measurement several times Error Possible cause Remedy No display no sensor current No supply voltage at the transmitter Establish mains connection Connection cable between sensor and transmitter interrupted Establish c...

Page 27: ...e membrane cap Screw on membrane cap Input flow of medium too low Establish correct flow Foreign oxidants interfering with DPD reference measurement Examine medium check chemicals Use of organic disinfectants Use suitable agent e g as per DIN 19643 water may need to be replaced first Use suitable reference system Polarization time is too low Wait for polarization to be completed pH value Stay with...

Page 28: ...or Recommended calibration intervals Drinking water industrial water process water cooling water depending on the special conditions 1 to 4 weeks Swimming pools weekly Whirlpools daily Sensor calibration If cap is replaced If the slope is too low or too high relative to the nominal slope and the membrane cap is not visibly damaged or dirty Fill membrane cap with fresh electrolyte 29 If there are g...

Page 29: ...t swallow it and avoid contact with eyes Keep the electrolyte bottle closed after use Do not transfer electrolyte to other vessels Do not store electrolyte for longer than one year The electrolyte must not be yellow in color Observe the use by date on the label Avoid air bubbles when pouring electrolyte into membrane cap Only use membrane cap once Fill the membrane cap with electrolyte 20 9 2 3 Re...

Page 30: ...ane cap Screw membrane cap onto sensor Screw membrane cap onto sensor shaft hold sensor by the shaft Keep valve clear 1 A0037889 12 Screw on membrane cap keep pressure relief valve clear 1 Pressure relief valve 9 2 4 Storing the sensor If measurement is suspended 1 Remove sensor from assembly 2 Unscrew membrane cap and dispose of it ...

Page 31: ... for commissioning 24 Ensure that no biofouling occurs during longer interruptions to measurement Remove continuous organic deposits such as films of bacteria from media with a high concentration of chlorine Fitting the protection cap on the sensor 1 To keep the membrane moist after the sensor has been removed fill the protection cap with clean water A0037886 13 Carefully slide protection cap onto...

Page 32: ...d to the counter electrode at the factory continues to grow during sensor operation However this has no effect on the reaction taking place at the working electrode A change in the color of the silver halide layer indicates an effect of the reaction that is taking place Carry out a visual inspection to ensure that the gray brown color of the counter electrode has not changed If the color of the co...

Page 33: ... or delivered As an ISO certified company and also due to legal regulations Endress Hauser is obliged to follow certain procedures when handling any returned products that have been in contact with medium To ensure the swift safe and professional return of the device Refer to the website www endress com support return material for information on the procedure and conditions for returning devices 1...

Page 34: ...or 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 Flowf...

Page 35: ... of oxygen and disinfection measuring points Product Configurator on the product page www endress com coy8 Technical Information TI01244C 12 Technical data 12 1 Input 12 1 1 Measured variables 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...

Page 36: ...cludes all the uncertainties of the sensor and transmitter electrode system It does not contain all the uncertainties caused by the reference material and adjustments that may have been performed 12 2 5 Repeatability 0 008 mg l ppm 12 2 6 Nominal slope 4 nA per 1 mg l ppm under reference operating conditions 12 2 7 Long term drift 3 per month 12 2 8 Polarization time Initial commissioning Up to 24...

Page 37: ...perature fluctuations 12 4 2 Process pressure max 1 bar 14 5 psi absolute if installed in the Flowfit CCA250 assembly 12 4 3 pH range pH5 5 to 9 5 pH dependency increase from pH 7 to pH 8 approx 10 for free chlorine 12 4 4 Conductivity range 0 03 to 40 mS cm 12 4 5 Flow 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 12 4 6 Flow Optimum 20 to 30 c...

Page 38: ...ng PTFE Hose seal Silicone Electrode body PMMA 12 5 4 Cable specification max 100 m 330 ft incl Cable extension 13 Installation and operation in hazardous environment Class I Div 2 Non sparking device for use in specified hazardous environment in accordance with cCSAus Class I Div 2 Gas group A B C D Temperature class T6 5 C 23 F Ta 55 C 131 F Control drawing 401204 ...

Page 39: ...CCS120D Installation and operation in hazardous environment Class I Div 2 Endress Hauser 39 ...

Page 40: ...2 Incoming acceptance 12 Installation Check 22 Flow assembly 21 Immersion assembly 22 Installation position 14 Sensor 16 Installation position 14 L Long term drift 36 M Maintenance schedule 28 Maintenance tasks 28 Materials 38 Maximum measured error 36 Measured signal 9 Measured value resolution 36 Measured variables 35 Measuring principle 8 Measuring ranges 35 Measuring system 16 Mounting instruc...

Page 41: ...g 28 Connecting 23 Mounting 16 Polarization 24 Regenerating 32 Storage 30 Spare parts 33 Storage 30 Storage temperature 37 Symbols 4 T Technical data Environment 37 Input 35 Mechanical construction 37 Performance characteristics 36 Process 37 Temperature 10 Troubleshooting 26 U Use 6 W Warnings 4 Weight 37 ...

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Page 44: ...www addresses endress com 71461435 71461435 ...

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