• Intertec Instrumentation Private Limited

Enclosures for Hazardous Field Environment

Intertec Instrumentation, a manufacturer of Enclosures, has launched an explosion proof protection option. A new inert gas pressurisation system allows its protective cabinets or enclosures to house laboratory-style equipment that is non explosion protected – such as analysers and sensors – in IEC-Ex and ATEX Zone 1, 21, 2 or 22 hazardous areas. The company is known for offering an exceptionally broad range of field protection enclosures, which are constructed from high performance grades of GRP (glass reinforced polyester). The new inert gas pressurisation option – InertSyst – extends the types of equipment that plant instrumentation engineers can install in these protective enclosures – providing an unmatched choice of enclosure styles and opening formats, as well as climate protection accessories. A unique aspect of the new Ex p system is that it is certified for use where a hazardous atmosphere might be created inside the enclosure – due perhaps to a hydrocarbon leak from the analyser equipment – as well as more conventional situations where a potential hazard is caused by the atmosphere outside the enclosure. The certification also applies to the system as a whole. This means that Intertec can use the principle for virtually any application, without having to seek re-certification from approvals agencies. InertSyst – or inert gas purged system – works by maintaining a small overpressure inside the enclosure, in the order of 0.8 mbar, of an inert gas such as nitrogen or carbon dioxide. Many refineries and chemical facilities incorporate air separation plants to produce a source of nitrogen, which is piped around the facility. If this is not available, the enclosure can be supplied from a standalone cylinder.