Description of the Gas Analyzers 13
Case Purging
In order to protect the electronic assemblies from an ingressing
aggressive atmosphere or corrosive sample gas components, the
flameproof case can be purged with air or inert gas.
The purge gas is fed in and conducted away via two flame barriers, which
are open on the inside of the flameproof case.
Note: The case purging has no meaning in the sense of a pressurized
enclosure to IEC/EN 60079-2.
Explosion Protection
The gas analyzers are designed for use in hazardous areas. They are
certified in accordance with the European Directive 94/9/EC ("ATEX
Directive") and the pertinent IEC standards.
The housings are designed as field housings in the type of protection
"Flameproof Enclosure 'd'". They comply with the requirements of the
explosion group IIC. As a result, the gas analyzers can also be used in
atmospheres containing hydrogen or acetylene.
Certification to ATEX Directive
EL3060-CU control unit (with or without Magnos206, Caldos25,
Caldos27 analyzers)
EC Type Examination Certificate BVS 08 ATEX E 048 X
Label
II 2G Ex de IIC T4 Gb
Analyzer unit EL3060-Uras26
EC Type Examination Certificate BVS 08 ATEX E 055 X
Label
II 2G Ex d IIC T4 Gb
Note: The measurement function according to Directive 94/9/EC, Annex II,
Paragraph 1.5.5 is not an object of these EC type examination certificates.
Certification to IEC standards
EL3060-CU control unit (with or without Magnos206, Caldos25,
Caldos27 analyzers)
IECEx Certificate of Conformity IECEx BVS 13.0037X
Label Ex de IIC T4 Gb
Analyzer unit EL3060-Uras26
IECEx Certificate of Conformity IECEx BVS 13.0056X
Label Ex d IIC T4 Gb
NOTE
The certificates can be found on the CD-ROM which is enclosed with the
gas analyzer.
Please note the "Information for the installation, maintenance and repair
of electrical installations in hazardous areas" (see page 10).
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