Certified housings for special conditions.

TOC analyzer in a ATEX housing

Often, online analyzers are installed in industrial facilities such as refineries or chemical plants. Here explosive gasses, vapours or mist can be present. It is a high risk situation, as any spark or any heat source may cause an explosion. Normally analyzers are located directly at the process site, being built into an analyzer shelter with climate control (HVAC; heating, ventilation and air conditioning).

LAR offers a wide range of analyzers with tailor made protection housings in accordance to international standards (IEC 60079-14:2007) and regulations (DIN EN 60079-2:2011-11). These stand-alone analyzers do not necessarily require air-conditioned shelters as their enclosures correspond to requirements of Nema 4X (IP 65) and ATEX for Zone 1 and 2 (T3, T4). The Ex p housings are made specifically for the use within hazardous, potentially explosive and the NEMA 4X housings for corrosive environments.

The ex zone classification depends on the type of flammable substances e.g. gas, vapour, mist or a cloud of combustible dust and the probability that they can be present.

Ex zone 0: Gas, vapour or mist are present continously or for long periods or frequently.

Ex zone 1: Gas, vapour or mist is likely to occur in normal operation occasionally.

Ex zone 2: Gas, vapour or mist is not likely to occur in normal operation, but - if it does occur - will persist for a short period only.

LAR offers the safe way of using online analyzers even directly in hazardous and corrosive environments. Operators are being provided with the optimal solutions for their processes. Worldwide, hundreds of LAR analyzers with Ex p housings are successfully in use.