KROHNE DK32, DK34, DK37 User Manual

DK32 - DK34 - DK37

DK32 - DK34 - DK37DK32 - DK34 - DK37

Variable area flowmeter

Handbook

HandbookHandbook

: IMPRINT :::::::::::::::::::::::::::::::::::::::

Subject to change without notice.

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DK32 - DK34 - DK37

CONTENTS

1 Safety instructions 5

1.1 Intended use ..................................................................................................................... 5

1.2 Certifications .................................................................................................................... 5

1.3 Safety instructions from the manufacturer ..................................................................... 6

1.3.1 Copyright and data protection ................................................................................................ 6

1.3.2 Disclaimer ............................................................................................................................... 6

1.3.3 Product liability and warranty ................................................................................................ 7

1.3.4 Information concerning the documentation........................................................................... 7

1.3.5 Warnings and symbols used................................................................................................... 8

1.4 Safety instructions for the operator................................................................................. 8

2 Device description 9

2.1 Scope of supply................................................................................................................. 9

2.2 Device versions............................................................................................................... 10

2.3 Nameplate ...................................................................................................................... 11

2.4 Description code............................................................................................................. 12

3 Installation 13

3.1 General notes on installation ......................................................................................... 13

3.2 Storage ........................................................................................................................... 13

3.3 Installation requirements .............................................................................................. 13

4 Electrical connections 14

4.1 Safety instructions.......................................................................................................... 14

4.2 Electrical connection of limit switches .......................................................................... 14

4.3 Setting the limit switch...................................................................................................16

4.4 DK37/M8M limit switches............................................................................................... 17

4.5 DK37/M8E electrical signal output ................................................................................ 18

4.5.1 Power supply......................................................................................................................... 19

4.5.2 Load for HART

4.5.3 Parametrization .................................................................................................................... 19

communication .......................................................................................... 19

4.6 Ground connections........................................................................................................ 20

4.7 Protection category ........................................................................................................21

5 Start-up 22

5.1 Standard device .............................................................................................................. 22

6 Service 23

6.1 Maintenance ................................................................................................................... 23

6.2 Spare parts availability...................................................................................................24

6.3 Availability of services .................................................................................................... 24

6.4 Returning the device to the manufacturer..................................................................... 24

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CONTENTS

6.4.1 General information.............................................................................................................. 24

6.4.2 Form (for copying) to accompany a returned device............................................................ 25

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6.5 Disposal .......................................................................................................................... 25

7 Technical data 26

7.1 Operating principle......................................................................................................... 26

7.2 Technical data................................................................................................................. 27

7.3 Dimensions ..................................................................................................................... 31

7.4 Flow table ....................................................................................................................... 34

7.5 Differential pressure regulators .................................................................................... 36

8 Notes 39

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1.1 Intended use

CAUTION!

Responsibility for the use of the measuring devices with regard to suitability, intended use and corrosion resistance of the used materials against the measured fluid lies solely with the operator.

INFORMATION!

The manufacturer is not liable for any damage resulting from improper use or use for other than the intended purpose.

The variable area flowmeters manufactured by KROHNE Messtechnik GmbH are suitable for measuring gases, vapors and liquids.

These flowmeters are particularly suitable for measuring:

• Liquids

• Hydrocarbons

• Water

• Chemicals with low corrosiveness

• Saturated steam

• Superheated steam

• Industrial gases

DANGER!

In case of instruments which are used in explosive endangered areas please consider the supplementary installation and operating instructions mentioned in the Ex-manual.

SAFETY INSTRUCTIONS 1

WARNING!

The operator shall bear sole responsibility for the use of the flowmeters with regard to suitability, intended use and corrosion resistance of the materials used to the process product. The manufacturer shall not be liable for any damage resulting from improper use or use for other than the intended purpose. Do not use any abrasive or highly viscous process products.

1.2 Certifications

CE marking

The flowmeter meets the statutory requirements of the following EC directives:

• Pressure Equipment Directive 97/23/EC

• EMC Directive 89/336/EC for instruments with electrical options

• ATEX Directive 94/9/EC for instruments in Ex-areas

And also

• NAMUR Recommendations NE 21 and NE 43 (DK37/M8E)

KROHNE Messtechnik GmbH & Co. KG certifies successful testing of the product by applying the CE mark.

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1 SAFETY INSTRUCTIONS

1.3 Safety instructions from the manufacturer

1.3.1 Copyright and data protection

The contents of this document have been created with great care. Nevertheless, we provide no guarantee that the contents are correct, complete or up-to-date.

The contents and works in this document are subject to copyright. Contributions from third parties are identified as such. Reproduction, processing, dissemination and any type of use beyond what is permitted under copyright requires written authorisation from the respective author and/or the manufacturer.

The manufacturer tries always to observe the copyrights of others, and to draw on works created in-house or works in the public domain.

The collection of personal data (such as names, street addresses or e-mail addresses) in the manufacturer's documents is always on a voluntary basis whenever possible. Whenever feasible, it is always possible to make use of the offerings and services without providing any personal data.

DK32 - DK34 - DK37

We draw your attention to the fact that data transmission over the Internet (e.g. when communicating by e-mail) may involve gaps in security. It is not possible to protect such data completely against access by third parties.

We hereby expressly prohibit the use of the contact data published as part of our duty to publish an imprint for the purpose of sending us any advertising or informational materials that we have not expressly requested.

1.3.2 Disclaimer

The manufacturer will not be liable for any damage of any kind by using its product, including, but not limited to direct, indirect or incidental and consequential damages.

This disclaimer does not apply in case the manufacturer has acted on purpose or with gross negligence. In the event any applicable law does not allow such limitations on implied warranties or the exclusion of limitation of certain damages, you may, if such law applies to you, not be subject to some or all of the above disclaimer, exclusions or limitations.

Any product purchased from the manufacturer is warranted in accordance with the relevant product documentation and our Terms and Conditions of Sale.

The manufacturer reserves the right to alter the content of its documents, including this disclaimer in any way, at any time, for any reason, without prior notification, and will not be liable in any way for possible consequences of such changes.

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DK32 - DK34 - DK37

1.3.3 Product liability and warranty

The operator shall bear responsibility for the suitability of the device for the specific purpose. The manufacturer accepts no liability for the consequences of misuse by the operator. Improper installation and operation of the devices (systems) will cause the warranty to be void. The respective "Standard Terms and Conditions" which form the basis for the sales contract shall also apply.

1.3.4 Information concerning the documentation

To prevent any injury to the user or damage to the device it is essential that you read the information in this document and observe applicable national standards, safety requirements and accident prevention regulations.

If this document is not in your native language and if you have any problems understanding the text, we advise you to contact your local office for assistance. The manufacturer can not accept responsibility for any damage or injury caused by misunderstanding of the information in this document.

This document is provided to help you establish operating conditions, which will permit safe and efficient use of this device. Special considerations and precautions are also described in the document, which appear in the form of underneath icons.

SAFETY INSTRUCTIONS 1

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1 SAFETY INSTRUCTIONS

1.3.5 Warnings and symbols used

Safety warnings are indicated by the following symbols.

DANGER!

This warning refers to the immediate danger when working with electricity.

DANGER!

This warning refers to the immediate danger of burns caused by heat or hot surfaces.

DANGER!

This warning refers to the immediate danger when using this device in a hazardous atmosphere.

DANGER!

These warnings must be observed without fail. Even partial disregard of this warning can lead to serious health problems and even death. There is also the risk of seriously damaging the device or parts of the operator's plant.

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WARNING!

Disregarding this safety warning, even if only in part, poses the risk of serious health problems. There is also the risk of damaging the device or parts of the operator's plant.

CAUTION!

Disregarding these instructions can result in damage to the device or to parts of the operator's plant.

INFORMATION!

These instructions contain important information for the handling of the device.

LEGAL NOTICE!

This note contains information on statutory directives and standards.

• HANDLING

HANDLING

HANDLINGHANDLING

This symbol designates all instructions for actions to be carried out by the operator in the specified sequence.

i RESULT

RESULT

RESULTRESULT This symbol refers to all important consequences of the previous actions.

1.4 Safety instructions for the operator

WARNING!

In general, devices from the manufacturer may only be installed, commissioned, operated and maintained by properly trained and authorized personnel. This document is provided to help you establish operating conditions, which will permit safe and efficient use of this device.

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DK32 - DK34 - DK37

2.1 Scope of supply

INFORMATION!

Inspect the packaging carefully for damages or signs of rough handling. Report damage to the carrier and to the local office of the manufacturer.

INFORMATION!

Do a check of the packing list to make sure that you have all the elements given in the order.

INFORMATION!

Look at the device nameplate to ensure that the device is delivered according to your order. Check for the correct supply voltage printed on the nameplate.

DEVICE DESCRIPTION 2

Figure 2-1: Scope of supply

1 Flowmeter in the version ordered 2 Manual 3 Certificates, calibration certificate (supplied to order only)

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2 DEVICE DESCRIPTION

2.2 Device versions

• DK32 with valve and horizontal connection

• DK34 without valve and vertical connection

• DK37 with valve and horizontal connection

The following designs are available as options:

• with inlet pressure regulator

• with outlet pressure regulator

Device versions

DK32 - DK34 - DK37

1 DK32 with valve - with horizontal connection 2 DK34 without valve - with vertical connection 3 DK37/M8E with valve and electronic display 4 DK37/M8M with valve and mechanical display

Versions with regulator

1 DK32 with inlet pressure regulator 2 DK37 with inlet pressure regulator

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2.3 Nameplate

INFORMATION!

Before installing the flowmeter, make sure that the information given on the nameplate corresponds to the ordering data.

DEVICE DESCRIPTION 2

Figure 2-2: Nameplates

1 Type of meter 2 Manufacturer 3 Appointed ATEX & DGRL body 4 Design data: temperature & pressure rating 5 DGRL data 6 Ex data 7 Electrical connection data 8 Pay regard to manual 9 KROHNE website

Additional markings on the flowmeter:

• SO - sales order / item

• PA - order

• Vx - product configurator code

• AC - article code

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2 DEVICE DESCRIPTION

2.4 Description code

Description code DK32 DK34

The description code consists of the following elements*:

1 32 - with valve and horizontal connection / 34 without valve and vertical connection 2 RE - inlet pressure regulator / RA - outlet pressure regulator 3 K1 - one limit switch / K2 - two limit switches 4 S - plug connector / L - cable gland incl. cable 5 HT - high-temperature version 6 A - limit switch EC type-tested 7 EX - Explosion-protected equipment 8 SK - SIL2 compliance of limit switches acc. to IEC 61508

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* positions which are not needed are omitted (no blank positions)

Description code DK37

The description code* consists of the following elements:

1 M8M - Mechanical display / M8E - Electronic display and signal output 4...20mA 2 RE - Inlet pressure regulator / RA - Outlet pressure regulator 3 K1 - one limit switch / K2 - two limit switches 4 Ex is not part of the designation key 5 SK - SIL2 compliance of limit switches acc. to IEC 61508

SE - SIL1 compliance of current output acc. to IEC 61508

* positions which are not needed are omitted (no blank positions)

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