Endress+Hauser CUS51D Operating Manual

BA00461C/07/EN/18.19 71438792 2019-01-31

Products Solutions Services

Operating Instructions

Turbimax CUS51D

Sensor for turbidity and solids content

Turbimax CUS51D Table of contents

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

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

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

1.3 Symbols on the device ................... 4

2 Basic safety instructions ............ 5

2.1 Requirements for the personnel ............ 5

2.2 Designated use ........................ 5

2.3 Occupational safety ..................... 5

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

2.5 Product safety ......................... 6

3 Product description ................. 7

3.1 Product design ......................... 7

4 Incoming acceptance and product

identification ..................... 12

4.1 Incoming acceptance ................... 12

4.2 Product identification ................... 12

4.3 Scope of delivery ...................... 13

4.4 Certificates and approvals ............... 13

12 Accessories ....................... 38

12.1 Assemblies .......................... 38

12.2 Holder .............................. 38

12.3 Compressed air cleaning ................ 38

13 Technical data .................... 40

13.1 Input ............................... 40

13.2 Performance characteristics .............. 40

13.3 Environment ......................... 42

13.4 Process ............................. 42

13.5 Mechanical construction ................ 42

Index .................................. 43

5 Installation ....................... 14

5.1 Mounting conditions ................... 14

5.2 Mounting the sensor ................... 14

5.3 Post-installation check .................. 20

6 Electrical connection .............. 21

6.1 Connecting the sensor .................. 21

6.2 Ensuring the degree of protection .......... 22

6.3 Post-connection check .................. 22

7 Commissioning .................... 23

7.1 Function check ....................... 23

8 Operation ......................... 24

8.1 Adapting the measuring device to the process

conditions ........................... 24

9 Diagnostics and troubleshooting ... 35

9.1 General troubleshooting ................. 35

10 Maintenance ...................... 36

10.1 Maintenance tasks ..................... 36

11 Repair ............................ 37

11.1 Return .............................. 37

11.2 Disposal ............................ 37

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About this document Turbimax CUS51D

1 About this document

1.1 Warnings

Structure of information Meaning

DANGER

Causes (/consequences)

If necessary, Consequences of non-compliance (if applicable)

Corrective action

‣

WARNING

Causes (/consequences)

If necessary, Consequences of non-compliance (if applicable)

Corrective action

‣

CAUTION

Causes (/consequences)

If necessary, Consequences of non-compliance (if applicable)

Corrective action

‣

NOTICE

Cause/situation

If necessary, Consequences of non-compliance (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

1.3 Symbols on the device

Symbol Meaning

Reference to device documentation

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Turbimax CUS51D Basic safety instructions

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 Designated use

CUS51D is a sensor for measuring turbidity and solids content in water and wastewater.

The sensor is particularly suited for use in the following applications:

• Turbidity measurement in the outlet

• Solids content in sludge activation and recirculation

• Solids content in sludge treatment

• Filterable matter in outlet of WWTPs

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 Occupational 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 European standards for industrial applications.

• The electromagnetic compatibility indicated applies only to a product that has been connected in accordance with these Operating Instructions.

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Basic safety instructions Turbimax CUS51D

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:

‣

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

2.5 Product safety

2.5.1 State of the art

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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Turbimax CUS51D Product description

3 Product description

3.1 Product design

The sensor is designed for continuous in-situ determination of interfaces and solids content.

The sensor is designed as a 40 mm sensor that can be operated directly and completely in the process without the need for further sampling (in-situ).

The sensor includes all necessary modules:

• Power supply

• Light sources

• Detectors, Detectors record the measuring signals, digitize them and process them into a measured value.

• Sensor microcontroller This is responsible for controlling internal processes and transmitting data.

All data - including the calibration data - are stored in the sensor. The sensor can thus be precalibrated and used at a measuring point, calibrated externally, or used for several measuring points with different calibrations.

3.1.1 Measuring principle

For turbidity measurement a light beam is directed through the medium and is deflected from its original direction by optically denser particles, e.g. particles of solid matter. This process is also called scattering.

A0030850

 1 Deflection of light

1 Light source 2 Light beam 3 Particle 4 Scattered light

The incident light is scattered in many directions, i.e. at different angles to the direction of propagation. 2 angle ranges are of particular interest here:

• Light scattered at a 90° angle is used primarily for turbidity measurement in drinking water.

• Light scattered at a 135° angle extends the dynamic range for high particle densities.

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Product description Turbimax CUS51D

90°

135°

FNU

90°

135°

A0030846

 2 Principle mode of operation of turbidity sensor

1 Light source 2 135° light receiver 3 90° light receiver

If the particle density in the medium is low, a large amount of light is scattered in the 90°channel and a small amount of light is scattered in the 135° channel. As the particle density increases, this ratio shifts (more light in the 135° channel, less light in the 90° channel).

 3 Signal distribution as a function of the particle density

Ir Relative intensity FNU Turbidity unit

The CUS51D turbidity sensor has 2 sensor units, which are independent of each other and arranged in parallel. The application-dependent evaluation of both signals leads to stable measured values.

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A0030849

Turbimax CUS51D Product description

A0030845

 4 Arrangement of light sources and light receivers

1, 2 Light sources 1 and 2 3, 5 135° light receiver 4, 6 90° light receiver

The sensor covers a broad range of turbidity and solids measurements thanks to the optical arrangement with 2 light sources, each with 2 light receivers placed at different angles (90° and 135°).

• As soon as the customer selects an application, e.g. activated sludge, the optical method best suited for the particular measuring task is automatically activated in the sensor (e.g. 90° measurements with both light sources).

• The double sensing system (2 light sources with 2 receivers per source) largely compensates for measured errors caused by fouling (4-beam pulsed light method →  9).

The sensor types available vary in terms of their measuring ranges and therefore the range of available applications.

3.1.2 Measuring methods

4-beam pulsed light method

The method is based on 2 light sources and 4 light receivers. Long-life LEDs are used as monochromatic light sources. These LEDs are pulsed alternately and generate 4 scattered light signals per LED pulse at the receivers.

This offsets interference influences such as extraneous light, LED aging, fouling of windows and absorption in the medium. Depending on the chosen application, different scattered light signals are processed. The signal type, number and calculation are stored in the sensor.

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Product description Turbimax CUS51D

1-135

2-135

1-90

2-90

A0030847

 5 4-beam pulsed light method S1 S E

135

Light source

Light receiver for 90° scattered light Light receiver for 135° scattered light

90° scattered light method

Measurement is performed with a wavelength of 860 Nm (634.3 lbf ft), as described in ISO 7027 / EN 27027.

The emitted light beam is scattered by the solid particles in the medium. The scattered radiation generated in this way is measured by scattered light receivers, which are arranged at an angle of 90° to the light sources. The turbidity of the medium is determined by the amount of scattered light.

 6 90° scattered light method

S Light source E Receiver P Particle

135° backscattered light method

The emitted light beam is scattered by the solid particles in the medium. The backscattering generated is measured by scattered light receivers, which are arranged next to the light sources. The turbidity of the medium is determined based on the quantity of back-scattered light. It is possible to measure very high turbidity values with this type of scattered light measurement.

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A0030852

Turbimax CUS51D Product description

Is= I0· C · A· f(a)

A0030855

 7 Principle of backscattered light method

IoIntensity of transmitted light IsIntensity of scattered light A Geometric factor

C Concentration P Particle f(α) Angle correlation

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Incoming acceptance and product identification Turbimax CUS51D

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

• Order code

• Extended order code

• Serial number

• Safety information and warnings

Compare the information on the nameplate with the order.

‣

4.2.2 Product identification

Product page

www.endress.com/cus51d

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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Turbimax CUS51D Incoming acceptance and product identification

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.

4.2.3 Manufacturer's address

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

4.3 Scope of delivery

The delivery comprises:

• 1 Turbimax CUS51D sensor, version as ordered

• 1 Operating Instructions BA00461C

4.4 Certificates and approvals

4.4.1  mark

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.

4.4.2 Electromagnetic compatibility

Interference emission and interference immunity as per

• EN 61326-1:2013

• EN 61326-2-3:2013

• NAMUR NE21: 2012

4.4.3 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.

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Installation Turbimax CUS51D

Ø 40

(1.57)

NPT ¾“

82.7 (3.26)

188.5 (7.42)

12.5 (0.49)

20.5 (0.81)

13.5 (0.53)

(1.42)

5 Installation

5.1 Mounting conditions

5.1.1 Dimensions

 8 Dimensions. Dimensions: mm (in)

Dimensions for compressed air cleaning →  38

5.2 Mounting the sensor

5.2.1 Measuring system

A complete measuring system comprises:

• Turbimax CUS51D turbidity sensor

• Liquiline CM44x multi-channel transmitter

• Assembly:

• Flexdip CYA112 assembly and Flexdip CYH112 holder or

• Retractable assembly, e.g. Cleanfit CUA451

A0030853

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