Endress+Hauser CCS50D Operating Manual

BA01773C/07/EN/02.19 71431040 2019-02-08

Products Solutions Services

Operating Instructions

CCS50D

Digital sensor with Memosens technology for determining chlorine dioxide

CCS50D Table of contents

1 About this document ........... 4

1.1 Warnings ........................... 4

1.2 Symbols used ........................ 4

11 Accessories .................... 40

11.1 Maintenance kit CCV05 .............. 40

11.2 Device-specific accessories ............ 40

2 Basic safety instructions ....... 6

2.1 Requirements for the personnel ........ 6

2.2 Designated use ...................... 6

2.3 Workplace safety .................... 6

2.4 Operational safety ................... 7

2.5 Product safety ....................... 7

3 Product description ............. 8

3.1 Product design ....................... 8

4 Incoming acceptance and

product identification ......... 13

4.1 Incoming acceptance ................ 13

4.2 Product identification ................ 13

5 Installation .................... 15

5.1 Installation conditions ............... 15

5.2 Mounting the sensor ................ 17

5.3 Post-installation check ............... 24

6 Electrical connection .......... 25

6.1 Connecting the sensor ............... 25

6.2 Ensuring the degree of protection ..... 25

6.3 Post-connection check ............... 26

7 Commissioning ................ 27

7.1 Function check ..................... 27

7.2 Sensor polarization .................. 27

7.3 Sensor calibration ................... 27

12 Technical data ................. 41

12.1 Input .............................. 41

12.2 Performance characteristics .......... 43

12.3 Environment ....................... 44

12.4 Process ............................ 44

12.5 Mechanical construction ............. 45

13 Installation and operation in

hazardous environment Class

I Div. 2 .......................... 46

Index ................................. 48

8 Diagnostics and

troubleshooting ............... 29

9 Maintenance .................. 31

9.1 Maintenance schedule ............... 31

9.2 Maintenance tasks .................. 32

10 Repair .......................... 39

10.1 Spare parts ........................ 39

10.2 Return ............................ 39

10.3 Disposal ........................... 39

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About this document CCS50D

1 About this document

1.1 Warnings

Structure of information Meaning

DANGER

Causes (/consequences)

If necessary, Consequences of noncompliance (if applicable)

Corrective action

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WARNING

Causes (/consequences)

If necessary, Consequences of noncompliance (if applicable)

Corrective action

‣

CAUTION

Causes (/consequences)

If necessary, Consequences of noncompliance (if applicable)

Corrective action

‣

NOTICE

Cause/situation

If necessary, Consequences of noncompliance (if applicable)

Action/note

‣

This symbol alerts you to a dangerous situation. Failure to avoid the dangerous situation will result in a fatal or serious injury.

This symbol alerts you to a dangerous situation. Failure to avoid the dangerous situation can result in a fatal or serious injury.

This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in minor or more serious injuries.

This symbol alerts you to situations which may result in damage to property.

1.2 Symbols used

Symbol Meaning

Additional information, tips

Permitted or recommended

Not permitted or not recommended

Reference to device documentation

Reference to page

Reference to graphic

 Result of a step

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CCS50D About this document

1.2.1 Symbols on the device

Symbol Meaning

Reference to device documentation

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Basic safety instructions CCS50D

2 Basic safety instructions

2.1 Requirements for 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.

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The technical personnel must have read and understood these Operating Instructions and

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must follow the instructions contained therein. Measuring point faults may be repaired only by authorized and specially trained personnel.

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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 Designated use

Drinking water and industrial water must be disinfected through the addition of appropriate disinfectants such as chlorine gas or inorganic chlorine compounds. The dosing quantity must be adapted to continuously fluctuating operating conditions. If the concentrations in the water are too low, this could jeopardize the effectiveness of the disinfection. On the other hand, concentrations which are too high can lead to signs of corrosion 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 chlorine dioxide in water. In conjunction with measuring and control equipment, it allows optimal control of disinfection.

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.

2.2.1

1. The device must be installed in a housing or cabinet that can be accessed only by means

2. Pay attention to the control drawing and the specified application conditions in the

Hazardous environment in accordance with cCSAus NI Cl. I, Div. 2

of a tool or key.

appendix of these Operating Instructions, and follow the instructions.

2.3 Workplace safety

As the user, you are responsible for complying with the following safety conditions:

• Installation guidelines

• Local standards and regulations

1) Only if connected to CM44x(R)-CD*

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CCS50D Basic safety instructions

Electromagnetic compatibility

• The product has been tested for electromagnetic compatibility in accordance with the applicable European 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:

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products must be taken out of service and protected against unintentional operation.

2.4.1 Special instructions

Do not operate the sensors under process conditions where it is expected that osmotic

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conditions will cause electrolyte components to pass through the membrane and into the process.

Use of the sensor for its intended purpose in liquids with a conductivity of at least 10 nS/cm can be classified as safe in terms of the application.

2.5 Product safety

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 European standards have been observed.

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Product description CCS50D

3 Product description

3.1 Product design

The sensor consists of the following functional units:

• Membrane cap (measuring chamber with membrane) – Separates the inner amperometric system from the medium – With robust PVDF membrane and pressure relief valve – Guarantees a defined and consistent electrolyte film between cathode and membrane – With special support grid between cathode and membrane for a defined and consistent

electrolyte film and therefore a relatively constant reading at varying pressures and flows

• Sensor shaft with – Large anode – Cathode embedded in plastic – Embedded temperature sensor

1 Memosens plug-in head 2 Sensor shaft 3 Large anode, silver/silver chloride 4 Gold cathode 5 Grooves for installation adapter 6 Membrane cap with dirt-repellent

membrane 7 Pressure relief valve (elastic) 8 Sensor membrane

 1 Sensor structure

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3.1.1 Measuring principle

Chlorine dioxide levels are determined in accordance with the amperometric measuring principle.

The chlorine dioxide (ClO2) in the medium diffuses through the sensor membrane and is reduced to chloride ions (Cl-) at the gold cathode. At the silver anode, silver is oxidized to

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CCS50D Product description

silver chloride. Electron donation at the gold cathode and electron acceptance at the silver anode cause a current to flow which is proportional to the concentration of chlorine dioxide in the medium. This process does not depend on the pH value over a wide range.

The transmitter uses the current signal to calculate the measured variable for concentration in mg/l (ppm).

3.1.2 Effects on the measured signal

pH value

pH dependency

pH value Result

< 3.5 Chlorine is produced if chloride (Cl-) is present in the medium at the same time. The strong cross-sensitivity

3.5 to 9 The pH value does not affect measurement of the chlorine dioxide concentration in the medium.

> 9 Chlorine dioxide is unstable and decomposes.

to chlorine dioxide causes an increase in the measured value.

Flow

The minimum flow velocity of the membrane-covered measuring cell is 15 cm/s (0.5 ft/s).

• When using the Flowfit CCA151 flow assembly, this corresponds to a flow rate of 5 l/h (1.3 gal/h).

• When using the CCA250 flow assembly, this corresponds to a flow rate of 30 l/h (7.9 gal/h) (upper edge of float at the height of the red bar mark).

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Product description CCS50D

100

relative slope / maximum slope in %

CCA151 ﬂow gal/hr

CCA250 ﬂow gal/hr

ﬂow velocity at the membrane "/s

0 0.5 1 1.5 2 3

0 5 10 25 40

2 3 4 5 6

2.5

30 35

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 2 Correlation between slope of electrode and flow velocity at the membrane/flow rate in assembly

At higher flow rates, the measured signal is virtually flow-independent. However, if the flow rate falls below the specified value, the measured signal depends on the flow.

The installation of an INS proximity switch in the assembly enables reliable detection of this invalid operating status, thus triggering an alarm or causing the dosing process to be switched off if necessary.

Below the minimum flow rate, the sensor current is more sensitive to flow fluctuations. For abrasive media, it is recommended not to exceed the minimum flow. If suspended solids are present, which may form deposits, the maximum flow rate is recommended.

Temperature

Changes in the temperature of the medium affect the 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 must be maintained at a constant level following calibration.

2. Otherwise, recalibrate the sensor.

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CCS50D Product description

In the event of normal and slow changes in temperature (0.3 K / minute), the internal temperature sensor is sufficient. In the event of very rapid temperature fluctuations with high amplitude (2 K / minute), an external temperature sensor is necessary to ensure maximum accuracy.

For detailed information on the use of external temperature sensors, see the Operating Instructions for the transmitter.

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Product description CCS50D

Cross-sensitivities

Free chlorine, ozone, free bromine There were no cross-sensitivities for: H2O2, peracetic acid

2) The listed substances have been tested with different concentrations. An additive effect has not been investigated.

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CCS50D Incoming acceptance and product identification

4 Incoming acceptance and product identification

4.1 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.

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 and warnings

Compare the information on the nameplate with the order.

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4.2.2 Product page

www.endress.com/ccs50d

4.2.3 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. Call up the site search (magnifying glass).

3. Enter a valid serial number.

4. Search.  The product structure is displayed in a popup window.

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Incoming acceptance and product identification CCS50D

5. Click on the product image in the popup window.  A new window (Device Viewer) opens. All of the information relating to your

device is displayed in this window as well as the product documentation.

4.2.4 Manufacturer address

Endress+Hauser Conducta GmbH+Co. KG Dieselstraße 24 D-70839 Gerlingen

4.2.5 Scope of delivery

The delivery comprises:

• Disinfection sensor (membrane-covered, ⌀25 mm) with protection cap (ready for use)

• Bottle with electrolyte (50 ml (1.69 fl.oz)

• Replacement membrane cap in protection cap

• Operating Instructions

• Manufacturer inspection 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 TP TC 020/2011 which apply in the European Economic Area (EEA). The EAC conformity mark is affixed to the product.

Ex approvals

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

3) Only if connected to CM44x(R)-CD*

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CCS50D Installation

15°

5 Installation

5.1 Installation conditions

5.1.1 Installation position

Do not install upside-down!

Install the sensor in an assembly, support or appropriate process connection at an angle of

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at 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

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assembly used.

A Permitted orientation B Incorrect orientation

A0034236

5.1.2 Immersion depth

50 mm (1.97 in)

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Installation CCS50D

161 (6.34)

82 (3.23)

102 (4.02)

126 (4.96)

!25

(0.98)

5.1.3 Dimensions

A0034238

 3 Dimensions in mm (in)

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