ABB PGC5000 Series gas chromatographs

ABB PGC5000 Series  gas chromatographs

Introduction

this “Zone 2 by design” analyzer is that the analyzer  must remain safe when operated in an abnormal  condition. In the event of a fault, the PGC5000  provides continual protection:

•  Should a failed component become ignition  capable, the pressurization system prevents the  components from being exposed to flammable  gases or vapors. 

•  Should a failed pressurization system expose the  internal components to flammable gases or  vapors, the analyzer’s alarm provision will alert the  user of the failure.

PGC Certification

This simple pressurization technique for the  PGC5000 is considered an improvement to the  process gas chromatograph analyzer by allowing for  a continual operation without possible disruption  caused by interlocking the electrical power to the pressurization system. When operated in a zone 1  area, the user of the PGC5000 analyzer is simply  responsible for:

•  Operating the analyzer within the manufacturer’s  established parameters, as described in the  product manuals and the CE conformity  declaration’s special conditions for safe use 

•  Providing a reliable supply of protected air for the  enclosure purge and pressurization system 

•  Monitoring the alarm state of the pressurization  system in normal operation 

•  Responding to the alarm condition of the  pressurization system, which may require  restoring the supply of protected air or the  removal of electrical power and proper isolation  of remaining hazardous live circuits if the area is  potentially hazardous

ATEX Directive 2014/34/EU, annex II

The PGC5000 analyzer “must be so designed and  constructed as to prevent ignition sources arising,  even in the event of frequently occurring  disturbances or equipment operating faults, which  normally have to be taken into account”. The design  of the analyzer is capable of functioning within the  established operational parameters and of ensuring  a high level of protection necessary for the intended  classified Ex zone 1 area. The notified body LCIE  examined the internal components of the PGC5000  and approved the analyzer as Ex ‘py’ for a zone 1  area:

•  The EC-type examination of the PGC5000 series  analyzer and the IEC Ex test report first evaluated  the internal components to Part 15 of the  harmonized conformity standard IEC60079 (Ex ‘n’)  as either being non-sparking, energy limited or  temperature limited to below the specified  temperature class (ref: certificates EC-type LCIE  09ATEX 1017X and IECEx LCI09.0010X). 

•  The EC-type examination of the PGC5000 series  analyzer and the IEC Ex test report then evaluated  the pressurization protection of the enclosure to  part 2 of the harmonized conformity standard  IEC60079 (Ex ‘p’) as being suitable for zone 1 area  without electrical power interlock to the  pressurization system (ref: certificates EU-type  LCIE 09ATEX 3006X and IECEx LCI09.0010X).

APPLICATIONS

• Simulation 

• Instrumentation 

• Industrial control 

• Process control and monitoring 

• Factory automation 

• Intelligent networked PLC controllers 

• Automated test 

• Data acquisition