KROHNE DK37 Series User manual

Variable area flowmeter
DK32 - DK34 - DK37
DK32 - DK34 - DK37DK32 - DK34 - DK37
DK32 - DK34 - DK37 Handbook
HandbookHandbook
Handbook
© KROHNE 07/2009 - 4000287102 MA DK32-34-37-R04-en
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All rights reserved. It is prohibited to reproduce this documentation, or any part thereof, without
the prior written authorisation of KROHNE Messtechnik GmbH.
Subject to change without notice.
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Copyright 2010 by
KROHNE Messtechnik GmbH - Ludwig-Krohne-Str. 5 - 47058 Duisburg (Germany)
:IMPRINT ::::::::::::::::::::::::::::::::::
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CONTENTS
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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 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 .......................................................................... 15
4.3 Setting the limit switch for DK32 DK34.......................................................................... 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®communication .......................................................................................... 19
4.5.3 Parametrization .................................................................................................................... 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
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6.4.1 General information.............................................................................................................. 24
6.4.2 Form (for copying) to accompany a returned device............................................................ 25
6.5 Disposal .......................................................................................................................... 25
7 Technical data 26
7.1 Operating principle......................................................................................................... 26
7.2 Technical data................................................................................................................. 27
7.3 Dimensions ..................................................................................................................... 30
7.4 Flow table ....................................................................................................................... 33
7.5 Differential pressure regulators.................................................................................... 35
8 Notes 38
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SAFETY INSTRUCTIONS 1
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Safety instructions
1.1 Intended use
The variable area flowmeters manufactured by KROHNE Messtechnik GmbH & Co. KG 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
1.2 Certifications
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.
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.
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.
CE marking
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1SAFETY INSTRUCTIONS
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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 German 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.
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, incidental, punitive 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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SAFETY INSTRUCTIONS 1
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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.
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1SAFETY INSTRUCTIONS
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1.3.5 Warnings and symbols used
Safety warnings are indicated by the following symbols.
• HANDLING
HANDLINGHANDLING
HANDLING
This symbol designates all instructions for actions to be carried out by the operator in the
specified sequence.
iRESULT
RESULTRESULT
RESULT
This symbol refers to all important consequences of the previous actions.
1.4 Safety instructions for the operator
DANGER!
This information 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.
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.
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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DEVICE DESCRIPTION 2
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Device description
2.1 Scope of supply
INFORMATION!
Inspect the cartons carefully for damage or signs of rough handling. Report damage to the
carrier and to the local office of the manufacturer.
INFORMATION!
Check the packing list to check if you received completely all that you ordered.
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.
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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2DEVICE DESCRIPTION
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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
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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DEVICE DESCRIPTION 2
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2.3 Nameplate
Additional markings on the flowmeter:
•SO - sales order / item
•KO - KROHNE order
•Vx - product configurator code
•AC - article code
INFORMATION!
Before installing the flowmeter, make sure that the information given on the nameplate
corresponds to the ordering data.
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
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2DEVICE DESCRIPTION
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2.4 Description code
Description code DK32 DK34
The description code consists of the following elements*:
* positions which are not needed are omitted (no blank positions)
Description code DK37
The description code* consists of the following elements:
* positions which are not needed are omitted (no blank positions)
1 32 - mit Ventil und horizontalem Anschluss / 34 ohne Ventil und vertikalem Anschluss
2 RE - Vordruckregler / RA - Nachdruckregler
3 K1 - ein Grenzwertgeber / K2 - zwei Grenzwertgeber
4 S - Anschlussstecker / L - Leitungseinführung inkl. Kabel
5 HT - Hochtemperaturausführung
6 A - Grenzwertgeber EG baumustergeprüft bzw. IECEx geprüft
7 Ex - Explosionsgeschütztes Betriebsmittel
8 SK - SIL2 Konformität der Grenzwertgeber nach IEC 61508
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
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INSTALLATION 3
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Installation
3.1 Notes on installation
3.2 Storage
•Store the flowmeter in a dry and dust-free location.
•Avoid lasting direct exposure to the sun.
•Store the flowmeter in its original packaging.
•The permissible storage temperature is from -40 to +80°C for standard meters.
3.3 Installation requirements
INFORMATION!
Inspect the cartons carefully for damage or signs of rough handling. Report damage to the
carrier and to the local office of the manufacturer.
INFORMATION!
Check the packing list to check if you received completely all that you ordered.
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.
CAUTION!
When installing the flowmeter in the piping please observe the following points:
• The variable area flowmeter must be installed vertically (measuring principle). The flow
direction must be from bottom to top. For installation recommendations please refer also to
VDI/VDE Directive 3513 Sheet 3.
• Before connecting, blow or flush out the pipes leading to the flowmeter.
• Pipes for gas flow need to be dried before the flowmeter is installed.
• Use connectors suitable for the particular version of the flowmeter.
• Align the pipes axially with the connections on the flowmeter so that they are free of stresses.
• If necessary, the piping has to be supported to prevent vibrations being transmitted to the
flowmeter.
• Do not lay signal cables directly next to cables for the power supply.
• If several instruments are installed side by side, a minimum distance between these divices is
required (see Technical Data).
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4ELECTRICAL CONNECTIONS
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Electrical connections
4.1 Safety instructions
DANGER!
All work on the electrical connections may only be carried out with the power disconnected. Take
note of the voltage data on the nameplate!
DANGER!
Observe the national regulations for electrical installations!
DANGER!
For devices used in hazardous areas, additional safety notes apply; please refer to the Ex
documentation.
WARNING!
Observe without fail the local occupational health and safety regulations. Any work done on the
electrical components of the measuring device may only be carried out by properly trained
specialists.
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.
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ELECTRICAL CONNECTIONS 4
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4.2 Electrical connection of limit switches
The electrical connections for limit switches is effected:
•DK../../S - in the plug connector
•DK../../L - using a preassembled cable.
The following procedures must be performed (DK../../S):
• Slacken screw 1of the connector plug
• Pull out the plug
• Remove screw 1completely from the plug
• Insert a screwdriver in the marked opening 2(Lift) and remove the terminal block.
• Thread the connecting cable through the cable gland.
• Insert the cable (max. 1.5mm2) and screw down.
Figure 4-1: Electrical connection of limit switches
5- Lift slot
6- Fastening screw of terminal box
Contact connection Cable colors of assembled cable
3Min minus white
4Max plus brown
5Min plus yellow
6Max minus green
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4ELECTRICAL CONNECTIONS
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4.3 Setting the limit switch for DK32 DK34
Set the pointers to the desired limit values as a min. contact 1and max. contact 2using a slip
coupling along the scale.
Adjusting the limit switch with reed contact:
• Slacken nut 3
• Set reed cartridge to the required value
• Secure with nut 3
Comment
The reed contact is actuated directly by the float magnet. The desired operating point can only be
determined in measuring mode. A reference to the scale and/or pointer cannot be established.
Connection three-wire reed contact
Figure 4-2: Electrical connection of reed contact limit switch
Strand colours for flowmeters with preassembled cables:
1 Silicone-insulated wire - yellow/green / FEP-insulated wire - red
2 Silicone-insulated wire - brown / FEP-insulated wire - brown
3 Silicone-insulated wire - blue / FEP-insulated wire - blue
Figure 4-3: Limit switch settings
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ELECTRICAL CONNECTIONS 4
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4.4 DK37/M8M limit switches
The limit switches can be set over the entire measuring range using the maximum pointer. The
set limit values are displayed on the scale. The pointers are set to the desired limit values using
a slip coupling along the scale.
Figure 4-4: Limit switch setting
1 Maximum pointer, switching point indicator
2 Limit switch
3 Connection board
4 Connection terminal
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4ELECTRICAL CONNECTIONS
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4.5 DK37/M8E electrical signal output
The circuitry for connection to other devices such as digital evaluator units or process control
equipment must be designed with especial care. In some circumstances internal connections in
these devices (e.g. GND with PE, ground loops) may lead to impermissible voltage potentials,
which can compromise the function of the device itself or a connected device. In such cases a
protected extra-low voltage (PELV) is recommended.
Figure 4-5: Electrical connection M8E
1 Terminal connection
2 Auxiliary power 14.8...30VDC
3 Measurement signal 4...20mA
4 External load, HARTTM communication
Figure 4-6: Electrical connection with galvanic isolation
1 Terminal connection
2 Converter supply isolator with galvanic isolation
3 Auxiliary power (see supply isolator information)
4 Measurement signal 4...20mA
5 External load, HARTTM communication
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ELECTRICAL CONNECTIONS 4
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4.5.1 Power supply
The required supply voltage can be calculated using the formula below:
Uext. = RL*22mA + 14.8V
where
Uext. = the minimum supply voltage and
RL= the total measuring loop resistance.
4.5.2 Load for HART®communication
The maximum load impedance is calculated as follows:
4.5.3 Parametrization
The M8E electronic display can be parametrized via HART®communications. DD (Device
Descriptions) for AMS 6.x and PDM 5.2 and a DTM (Device Type Manager) are available for
parametrization (download center).
The current flowrate can be transmitted using the integral HART®communications. A flow
counter can be parametrized. Two limit values can be monitored. The limit values are assigned
either to flow values or to the counter overflow. The limit values are not depicted on the display.
INFORMATION!
The supply voltage has to be between 14.8VDC and 30VDC. This is based on the total resistance
of the measuring loop. To determine this, add up the resistances of each component in the
measuring loop (not including the meter).
INFORMATION!
The power supply has to be able to supply a minimum of 22mA.
INFORMATION!
For HART
®
communication a load of at least 230 ohm is required.
DANGER!
Use a twisted two-core cable to prevent electrical interference from impeding the DC output
signal.
In some cases a shielded cable may be necessary. The cable shield may only be earthed
(grounded) at one place (on the power supply unit).
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4ELECTRICAL CONNECTIONS
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4.6 Ground connections
The earthing can be done on the head piece of the measuring section (M4 threaded hole)
Figure 4-7: Ground connections
1 Earth connection on the measuring section
DANGER!
The earth conductor must not transfer any interference voltage.
Do not use this earth conductor to ground any other items of electrical equipment.
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