KROHNE ESK4ExII2GExi User Manual
Supplementary instructions
Supplementary instructions
ESK4... ...
ESK4... ...
ESK4... ... ESK4... ...
Supplementary instructionsSupplementary instructions
Electronic signal output
Equipment category II 2G, EPL Gb
© KROHNE 05/2014 - 4001078702 MA ESK4 Ex II2G AD R02-en
CONTENTS
ESK4... ...
1 Safety instructions 3
1.1 General notes ................................................................................................................... 3
1.2 EC conformity ................................................................................................................... 3
1.3 Safety instructions............................................................................................................ 3
2 Device description 4
2.1 Device description ............................................................................................................ 4
2.2 Description code............................................................................................................... 4
2.3 Marking............................................................................................................................. 4
2.4 Equipment category .........................................................................................................5
2.5 Protection types................................................................................................................ 5
2.6 Ambient temperature / temperature classes.................................................................. 5
2.7 Electrical data................................................................................................................... 6
3 Installation 7
3.1 Installation........................................................................................................................ 7
3.2 Special conditions............................................................................................................. 7
4 Electrical connections 8
4.1 General notes ................................................................................................................... 8
4.2 Power supply .................................................................................................................... 8
5 Operation 9
5.1 Start-up............................................................................................................................. 9
5.2 Operation .......................................................................................................................... 9
6 Service 10
6.1 Maintenance ................................................................................................................... 10
6.2 Dismantling .................................................................................................................... 10
7 Notes 11
2
www.krohne.com 05/2014 - 4001078702 MA ESK4 Ex II2G AD R02-en
ESK4... ...
1.1 General notes
These additional instructions apply to explosion-protected versions of the ESK4... electronic
signal output with the designation II 2 G. They complete the installation and operation
instructions for the non-explosion protected versions.
The information given in these Instructions contains only the data relevant to Category 2
explosion protection. The technical details given in the installation and operation instructions for
the non-explosion protected versions apply unchanged unless excluded or superseded 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.
Conformity with harmonised standards was checked
in accordance with EN 60079-0:2012 und EN 60079-11:2012.
The EC declaration of conformity is based on the EC type examination certificate of the
Physikalisch Technische Bundesanstalt (PTB):
SAFETY INSTRUCTIONS 1
The "X" after the certificate number refers to special conditions for safe use of the device, which
have been listed in these instructions.
If needed the EC type test certificate can be downloaded from the manufacturer's website.
1.3 Safety instructions
Assembly, installation, start-up and maintenance may only be performed by personnel trained in
explosion protection!
CAUTION!
Should operating conditions and locations require the observance of further standards,
guidelines and laws, this is the responsibility of the operator and/or those commissioned by him.
PTB 10 ATEX 2021 X
PTB 10 ATEX 2021 X
PTB 10 ATEX 2021 XPTB 10 ATEX 2021 X
www.krohne.com05/2014 - 4001078702 MA ESK4 Ex II2G AD R02-en
3
2 DEVICE DESCRIPTION
2.1 Device description
ESK4... electronic signal outputs serve to determine the position of magnetic encoders. They are
designed for installation in M40 type indicators and are usually used in measuring devices to
measure the volume flow and level of flammable and non-flammable gases and liquids.
The analogue current signal (4-20 mA) with superimposed HART® communication signal and
optional switching outputs and bus connection modules for connection to the Foundation
Fieldbus FF or Profibus PA is available as the output signal.
2.2 Description code
The safety description code * consists of the following elements:
1 EEEElectronic SSSSignal output KKKKrohne
2 Version of the signal output
4444 - Analogue signal output 4-20mA with HART signal
4-I/O
4-I/O - Switch output with counter
4-I/O4-I/O
4-FF
4-FF - Foundation Fieldbus connection module
4-FF4-FF
4-PA
4-PA - Profibus PA connection module
4-PA4-PA
3 Marking without influence on the explosion safety protection
ESK4... ...
2.3 Marking
The marking of the module is on the housing, where the following identification plate can be
found.
1 Device type
2 Manufacturer
3 Notified ATEX body
4 Serial number
5 Ex-data acc. to PTB 10 ATEX 2021 X
6 Note manual
4
www.krohne.com 05/2014 - 4001078702 MA ESK4 Ex II2G AD R02-en
Loading...