Endress+Hauser CA76NA Manuel utilisateur

Products Solutions Services

Operating Instructions

CA76NA

Analyzer for sodium

BA01706C/07/EN/04.22-00

71578460

2022-04-01

Valid as of version

V1.14.00

CA76NA Table of contents

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Table of contents

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

1.1 Symbols used .......................... 4

1.2 Documentation ........................ 5

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

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

2.2 Intended use .......................... 6

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

2.4 Operational safety ...................... 6

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

2.6 IT security ............................ 7

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

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

3.2 Operating principle .................... 11

4 Incoming acceptance and product

identification ..................... 13

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

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

4.3 Storage and transport .................. 14

5 Mounting ......................... 15

5.1 Mounting requirements ................. 15

5.2 Mounting the analyzer on a vertical surface .. 17

5.3 Post-mounting check ................... 17

6 Electrical connection .............. 18

6.1 Connecting requirements ................ 18

6.2 Connecting the analyzer ................. 18

6.3 Ensuring the degree of protection .......... 21

6.4 Post-connection check .................. 21

7 Operation options ................. 22

7.1 Structure and function of the operating

menu .............................. 22

8 Commissioning .................... 23

8.1 Preliminaries ......................... 23

8.2 Setting up PROFIBUS communication ....... 29

8.3 Function check ....................... 30

8.4 Switching on the measuring device ......... 30

8.5 Configuring the measuring device .......... 30

9 Operation ......................... 32

9.1 Main menu, measured value display ........ 32

9.2 Diagnosis ........................... 33

9.3 Maintenance ......................... 35

9.4 Parameters .......................... 38

9.5 PROFIBUS parameters .................. 40

10 Diagnostics and troubleshooting ... 46

10.1 Diagnostic list ........................ 46

10.2 Reset measuring device ................. 47

10.3 Firmware history ...................... 48

11 Maintenance ...................... 49

11.1 Maintenance schedule .................. 49

11.2 Maintenance tasks ..................... 49

11.3 Taking out of service ................... 60

12 Repair ............................ 61

12.1 General information ................... 61

12.2 Spare parts .......................... 61

12.3 Return .............................. 61

12.4 Disposal ............................ 61

13 Accessories ....................... 63

13.1 Device-specific accessories ............... 63

14 Technical data .................... 65

14.1 Input ............................... 65

14.2 Output ............................. 65

14.3 Power supply ......................... 66

14.4 Performance characteristics .............. 66

14.5 Environment ......................... 67

14.6 Process ............................. 67

14.7 Mechanical construction ................ 68

Index .................................. 69

About this document CA76NA

4 Endress+Hauser

1 About this document

1.1 Symbols used

1.1.1 Warnings

Structure of information Meaning

LDANGER

Causes (/consequences)

If necessary, Consequences of

non-compliance (if applicable)

‣Corrective action

This symbol alerts you to a dangerous situation.

Failure to avoid the dangerous situation will result in a fatal or serious

injury.

LWARNING

Causes (/consequences)

If necessary, Consequences of

non-compliance (if applicable)

‣Corrective action

This symbol alerts you to a dangerous situation.

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)

‣Action/note

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

property.

1.1.2 Symbols

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

CA76NA About this document

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1.1.3 Symbols on the device

Symbol Meaning

Caution: Hazardous voltage

No naked flames

Fire, open sources of ignition and smoking are forbidden

Eating and drinking are forbidden

Wear eye protection goggles

Wear safety gloves

Reference to device documentation

1.2 Documentation

The following instructions complement these Operating Instructions and are available on

the product pages on the Internet:

Installation Instructions, EA01214C

Basic safety instructions CA76NA

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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.

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

and must follow the instructions contained therein.

• Faults at the measuring point may only be rectified by authorized and specially trained

personnel.

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 Intended use

CA76NA is an analyzer designed for the continuous measurement of the concentration of

sodium in aqueous solutions.

The analyzer is designed for use in the following applications:

• Monitoring of the water/steam circuit in power plants, particularly for condenser

monitoring

• Quality assurance of demineralization systems and seawater desalination

• Quality assurance of the ultrapure water circuit in the semi-conductor and electronics

industry

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.

2.3 Workplace safety

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

• Installation guidelines

• Local standards and regulations

Electromagnetic compatibility

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

applicable international 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

LWARNING

Contact of chemicals with eyes and skin, and inhalation of vapors

Damage to the skin, eyes and respiratory organs

‣Wear protective goggles, protective gloves and a lab coat when working with chemicals.

‣Avoid any skin contact with chemicals.

‣Do not inhale any vapors.

‣Ensure the area is well ventilated.

‣Comply with further instructions in the safety data sheets for the chemicals used.

CA76NA Basic safety instructions

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2.5 Product safety

2.5.1 State-of-the-art technology

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

international standards have been observed.

Devices connected to the analyzer must comply with the applicable safety standards.

2.6 IT security

We only provide a warranty if the device is installed and used as described in the

Operating Instructions. The device is equipped with security mechanisms to protect it

against any inadvertent changes to the device settings.

IT security measures in line with operators' security standards and designed to provide

additional protection for the device and device data transfer must be implemented by the

operators themselves.

Product description CA76NA

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3 Product description

3.1 Product design

3.1.1 Main components

A0047852

 1 Main components

1 Power switch 7 Bottle for lab sample

2 Electronics unit 8 Sample conditioning unit (controls and filters the flow of sample)

3 Amplifier 9 Measuring unit with supply vessel

4 Bottle with alkalization reagent 10 Alkalization unit

5 Liquid control unit 11 Overflow vessel with level control

6 Bottle with sodium stock solution

CA76NA Product description

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3.1.2 Liquid control unit

A0047855

 2 Liquid control unit including measuring unit and supply vessel

1 Sample outlet, circuit 7 Housing outlet

2 Outlet after alkalization pump 8 Sample outlet, calibration

3 Inlet of alkalization pump 9 Temperature sensor

4 Inlet, standard solution 10 Fold-out housing

5 Inlet, laboratory sample Na+ Sodium sensor

6 Sample outlet, measurement pH pH sensor

Product description CA76NA

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3.1.3 Sample conditioning unit

A0047864

 3 Sample conditioning unit

1 Solenoid valve

2 Outlet to analyzer

3 Overflow valve

4 Sample outlet (bypass at solenoid valve)

5 Filter

6 Control valve (set sampling volume, for even sample overflow)

The sample conditioning unit performs the following tasks:

• Filters the sample

• Controls the flow of sample

• Limits the maximum pressure to 1 bar (14.5 psi)

• Provides fresh sample to every channel

If a channel is being measured, the corresponding solenoid valve (1) for the channel

opens. The sample flows to the overflow vessel. The rest of the time the sample drains off

via the bypass at the solenoid valve (4).

Each channel needs a minimum overpressure of 0.5 bar (7.3 psi) and a sample flow of

10 l/h (2.64 gal/hr). The maximum permitted supply pressure is 5 bar (72.5 psi).

3.1.4 Measuring system

A complete measuring system comprises:

• Analyzer CA76NA

• Sodium electrode (not included with the analyzer, can be ordered as an accessory)

→  63

• pH electrode (not included with the analyzer, can be ordered as an accessory)

→  63

• Standard solution (not included with the analyzer, can be ordered as an accessory)

→  63

• Alkalization reagent (recommended: diisopropylamine (DIPA), to be purchased

separately, > 99.0 % (GC), in a bottle made from a solid material, e.g. glass).

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