KROHNE DK46, DK47, DK48, DK800 User Manual
Supplementary instructions
Supplementary instructions
DK46 - DK800
DK46 - DK800
DK46 - DK800DK46 - DK800
Supplementary instructions Supplementary instructions
Variable area flowmeter
Device category II2G with electrical internals
Additional Ex manual
Additional Ex manual
Additional Ex manualAdditional Ex manual
© KROHNE 08/2012 - 4000430903 AD DK46/800 II2G R04 en
CONTENTS
DK46 - DK800
1 Safety instructions 3
1.1 General ............................................................................................................................. 3
1.2 EC conformity ................................................................................................................... 3
1.3 Security information......................................................................................................... 3
2 Device description 4
2.1 Device description ............................................................................................................ 4
2.2 Description code............................................................................................................... 4
2.3 Marking............................................................................................................................. 5
2.4 Flammable products ........................................................................................................ 6
2.5 Equipment category .........................................................................................................6
2.6 Types of protection ........................................................................................................... 6
2.7 Ambient temperature / temperature classes.................................................................. 7
3 Installation 9
3.1 Installation........................................................................................................................ 9
4 Electrical connections 10
4.1 Electrical connection......................................................................................................10
4.2 Terminal assignment ..................................................................................................... 10
4.3 Connecting cable ............................................................................................................ 11
4.4 Earthing and equipotential bonding ............................................................................... 11
5 Operation 12
5.1 Start-up........................................................................................................................... 12
5.2 Operation ........................................................................................................................ 12
5.3 Static electricity.............................................................................................................. 13
6 Service 14
6.1 Maintenance ................................................................................................................... 14
6.2 Dismantling .................................................................................................................... 14
2
www.krohne.com 08/2012 - 4000430903 AD DK46/800 II2G R04 en
DK46 - DK800
1.1 General
These supplementary Ex instructions apply for explosion-protected designs of the variable area
flowmeters DK.../../../..-Ex for the category II2G.
They supplement the installation and operating instructions for non-explosion-protected
designs.
The information in these instructions contains only the data concerning the explosion protection
of category 2.
The technical details in the installation and operating instructions for the non-explosionprotected designs apply unchanged in as far as they are not excluded or replaced by these
instructions.
1.2 EC conformity
The manufacturer declares with the EC Declaration of Conformity on his own responsibility
conformity with the protection goals of Directive 94/9/EC for use in hazardous areas with gas.
The EC Type Examination Certificate of the Physikalisch Technische Bundesanstalt (PTB) forms
the basis of the EC Declaration of Conformity:
SAFETY INSTRUCTIONS 1
If required the EC Type Test Certificate can be downloaded under www.krohne.com.
1.3 Security information
Assembly, installation, start-up and maintenance may only be performed by personnel trained in
explosion protection!
CAUTION!
The operator respectively his agent is responsible to follow further standards, directives or laws
if required due to operating conditions or place of installation. This applies particularly for the
use of easy detachable process connections such as SMS or Clamp when measuring flammable
mediums.
PTB 05 ATEX 2021 X
PTB 05 ATEX 2021 X
PTB 05 ATEX 2021 XPTB 05 ATEX 2021 X
www.krohne.com08/2012 - 4000430903 AD DK46/800 II2G R04 en
3
2 DEVICE DESCRIPTION
2.1 Device description
Variable area flowmeters measure the volume flow of flammable and non-flammable gases and
liquids. Up to two separately adjustable electrical limit switches can be mounted to the on-site
display.
2.2 Description code
The safety description code * consists of the following elements:
1 R - with integrated inlet pressure regulator (DKR46 only)
2 Device type:
46 - Overall length of measuring cone 65 mm
47 - Overall length of measuring cone 150 mm
48 - Overall length of measuring cone 300 mm
800 - Overall length of measuring cone 100 mm
DK46 - DK800
3 Material for top and bottom fittings
N - brass
R - stainless steel
PV - PVDF
4 Differential pressure regulators
RE - inlet pressure regulator
RA - outlet pressure regulator
5 K1 - one limit switch / K2 - two limit switches
* positions which are not needed are omitted (no blank positions)
4
www.krohne.com 08/2012 - 4000430903 AD DK46/800 II2G R04 en
DK46 - DK800
2.3 Marking
The marking for the entire device is provided on the indicator part with the marking plate shown
below.
DEVICE DESCRIPTION 2
1 Device type
2 Manufacturer
3 Notified ATEX body
4 Sizing data: temperature & pressure
5 PED data
6 Ex data
7 Electrical connection data
8 KROHNE website
9 Type of limit switch
Additional markings on the measuring device
• SN - serial number
• SO - sales order / item
• Tag-No - Measuring point identifier
• MD - manufacturing date
• PA - KROHNE order
• Vx - product configurator code
• AC - article code
www.krohne.com08/2012 - 4000430903 AD DK46/800 II2G R04 en
5
Loading...