Siemens SITRANS WFS320 Bedienungsanleitung

Operating Instructions

SITRANS WFS320

02/2016

Edition

Sensing Heads

SITRANS

Sensing Heads

SITRANS WFS320

Operating Instructions

02/2016

A5E32880290

-AB

Introduction

Safety notes

Description

Installing/mounting

Connecting

Commissioning

Service and maintenance

Diagnosing and

troubleshooting

Technical Data

Dimension drawings

Appendix A

Siemens AG

Division Process Industries and Drives

Postfach 48 48

90026 NÜRNBERG

GERMANY

Document order number: A5E32880290

Ⓟ

03/2016 Subject to change

Legal information

Warning notice system

This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent

damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert

symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are

graded according to the degree of danger.

DANGER

indicates that death or severe personal injury will result if proper precautions are not taken.

WARNING

indicates that death or severe personal injury may result if proper precautions are not taken.

CAUTION

indicates that minor personal injury can result if proper precautions are not taken.

NOTICE

indicates that property damage can result if proper precautions are not taken.

If more than one degree of danger is present, the warning notice representing the highest degree of danger will be

used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property

damage.

Qualified Personnel

The product/system described in this documentation may be operated only by

personnel qualified

for the specific task

in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified

personnel are those who, based on their training and experience, are capable of identifying risks and avoiding

potential hazards when working with these products/systems.

Proper use of Siemens products

Note the following:

WARNING

Siemens products may only be used for the applications described in the catalog and in the relevant technical

documentation. If products and components from other manufacturers are used, these must be recommended

or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and

maintenance are required to ensure that the products operate safely and without any problems. The permissible

ambient conditions must be complied with. The information in the relevant documentation must be observed.

Trademarks

All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication may

be trademarks whose use by third parties for their own purposes could violate the rights of the owner.

Disclaimer of Liability

We have reviewed the contents of this publication to ensure consistency with the hardware and software described.

Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in this

publication is reviewed regularly and any necessary corrections are included in subsequent editions.

SITRANS WFS320

Operating Instructions, 02/2016, A5E32880290-AB 3

Table of contents

1 Introduction................................................................................................................................................ 5

1.1 The manual...............................................................................................................................5

2 Safety notes............................................................................................................................................... 7

2.1 General safety instructions.......................................................................................................7

2.2 Installation in hazardous areas.................................................................................................7

3 Description............................................................................................................................................... 11

3.1 SITRANS WFS320 .................................................................................................................11

3.2 Principle of operation..............................................................................................................11

4 Installing/mounting................................................................................................................................... 13

4.1 Sensing head..........................................................................................................................13

4.2 Sensing plate..........................................................................................................................14

4.3 Viscous damper......................................................................................................................15

5 Connecting .............................................................................................................................................. 17

5.1 Unit without LVDT conditioner card........................................................................................17

5.2 Unit with sensing head mounted LVDT conditioner card........................................................18

5.3 Unit with remote-located LVDT conditioner card....................................................................20

6 Commissioning........................................................................................................................................ 25

6.1 Calibration...............................................................................................................................25

6.2 LVDT Output...........................................................................................................................26

6.3 Span test.................................................................................................................................27

6.4 Sensing head level test...........................................................................................................27

6.5 Integrator calibration...............................................................................................................28

6.6 Zero calibration.......................................................................................................................28

6.7 Span calibration......................................................................................................................28

7 Service and maintenance ........................................................................................................................ 31

7.1 Maintenance ...........................................................................................................................31

7.2 Spare parts .............................................................................................................................31

7.3 Inner gasket replacement.......................................................................................................32

7.4 Technical support....................................................................................................................32

8 Diagnosing and troubleshooting .............................................................................................................. 35

8.1 Range springs.........................................................................................................................35

Table of contents

SITRANS WFS320

4Operating Instructions, 02/2016, A5E32880290-AB

8.2 Troubleshooting ..................................................................................................................... 36

8.3 Linearity.................................................................................................................................. 36

9 Technical Data......................................................................................................................................... 39

9.1 Performance........................................................................................................................... 39

9.2 Construction........................................................................................................................... 39

9.3 Input....................................................................................................................................... 40

9.4 Output .................................................................................................................................... 40

9.5 Operating conditions.............................................................................................................. 40

9.6 Approvals............................................................................................................................... 41

10 Dimension drawings ................................................................................................................................ 43

10.1 WFS320 sensing head outline and mounting........................................................................ 43

A Appendix A.............................................................................................................................................. 45

A.1 WFS320 part identification diagram....................................................................................... 45

SITRANS WFS320

Operating Instructions, 02/2016, A5E32880290-AB 5

Introduction

Note

The SITRANS sensing head is to be used only in the manner outlined in this manual,

otherwise protection provided by equipment may be impaired.

•

It is your responsibility to read this manual before installing and starting up any

component of the weighing system to which the sensing head is being applied.

Note

For industrial use only

This product is intended for use in industrial areas. Operation of this equipme

nt in a

residential area may cause interference to several frequency based communications.

1.1

The manual

This manual covers only sensing head installation, operation, and maintenance procedures.

Flowmeter and integrator instruction manuals are available for download from our web site:

Siemens weighing (http://www.siemens.com/weighing)

Follow these operating instructions for quick, trouble-free installation, and maximum accuracy

and reliability of your device.

We always welcome suggestions and comments about manual content, design, and

accessibility. Please direct your comments to:

Technical publications (mailto:techpubs.smpi@siemens.com)

Introduction

1.1 The manual

SITRANS WFS320

6Operating Instructions, 02/2016, A5E32880290-AB

SITRANS WFS320

Operating Instructions, 02/2016, A5E32880290-AB 7

Safety notes

2.1

General safety instructions

CAUTION

Correct, reliable operation of the product requires proper transport, storage, positioning and

assembly as well as careful operation and maintenance. Only qualified personnel should

install or operate this instrument.

Note

Alterations to the product, including opening or improper repairs of the product, are not

permitted.

If this requirement is not observed, the CE mark and the manufacturer's warranty will expire.

2.2

Installation in hazardous areas

WARNING

Equipment used in hazardous areas must be Ex-approved and marked accordingly. It is

required that the special conditions for safe use provided in the manual and in the Ex

certificate are followed.

Safety notes

2.2 Installation in hazardous areas

SITRANS WFS320

8Operating Instructions, 02/2016, A5E32880290-AB

WFS320 nameplate

Note

The nameplate shown is a typical example. Please check the nameplate on your device for

your specific device configuration.

WARNING

Make sure the hazardous area approval is suitable for the environment in which the device

will be installed.

Instructions specific to hazardous area installations

(Reference European ATEX Directive 94/9/EC, Annex II, 1/0/6)

The following instructions apply to equipment covered by certificate number FM13ATEX0032X,

or certificate number FM14ATEX0027X, or both if neither certificate is specified.

1. For use and assembly, refer to the main instructions.

2. The equipment is certified for use as Category 3G equipment per FM13ATEX0032X.

3. Per FM13ATEX0032X, the equipment may be used with flammable gases and vapours with

apparatus group IIA, IIB, and IIC, and temperature classes T1, T2, T3, T4, T5, and T6 in zone

2 hazardous locations.

4. The equipment is certified for use as Category 2D equipment per FM14ATEX0027X.

Safety notes

2.2 Installation in hazardous areas

SITRANS WFS320

Operating Instructions, 02/2016, A5E32880290-AB 9

5. Per FM14ATEX0027X, the equipment has a degree of ingress protection of IP64 and a

temperature class of T70ºC and may be used with flammable, conductive dusts in zone 21

and 22 hazardous locations.

6. The equipment is certified for use in an ambient temperature range of -40ºC to +60ºC.

7. The equipment has not been assessed as a safety related device (as referred to by Directive

94/9/EC Annex II, clause 1.5).

8. Installation and inspection of the equipment shall be carried out by suitably trained personnel

in accordance with the applicable code of practice.

9. Repair of the equipment shall be carried out by suitably trained personnel in accordance with

the applicable code of practice.

10.Components to be incorporated into or used as replacements in the equipment shall be fitted

by suitably trained personnel in accordance with the manufacturer’s documentation.

11.Each certificate number has an ‘X’ suffix, which indicates that special conditions for safe use

apply. Those installing or inspecting the equipment must have access to the certificates.

12.If the equipment is likely to come into contact with aggressive substances, then it is the

responsibility of the user to take suitable precautions that prevent it from being adversely

affected, thus ensuring that the type of protection is not compromised.

–Aggressive substances:

for example, acidic liquids or gases that may attack metals, or solvents that may affect

polymeric materials.

–Suitable precautions:

for example, establishing from the material’s data sheet that it is resistant to specific

chemicals.

Special conditions for safe use

Certificate number FM13ATEX0032X

The ‘X’ suffix to certificate number FM13ATEX0032X relates to the following special conditions

for safe use:

●The enclosure is non-conducting and, under certain extreme conditions, may generate an

ignition-capable level of electrostatic charges. The user shall ensure that the equipment is not

installed in a location where it may be subjected to external conditions (such as high-pressure

steam) which might cause a build-up of electrostatic charges on non-conducting surfaces.

Additionally, cleaning of the equipment should be done only with a damp cloth.

●Indoor use only. Additionally, the user shall ensure that the equipment is not installed in a

location where it is continuously exposed to ultraviolet light.

Certificate number FM14ATEX0027X

The ‘X’ suffix to certificate number FM14ATEX0027X relates to the following special conditions

for safe use:

●The enclosure is non-conducting and, under certain extreme conditions, may generate an

ignition-capable level of electrostatic charges. The user shall ensure that the equipment is not

installed in a location where it may be subjected to external conditions (such as high-pressure

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