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Fid Landfill Monitoring

The fid flame ionisation detector has been a long time used analytical technique mostly in the laboratory, couple to a gas chromatogram column.The origins of the fid are believed to be in the 1950's.Two organisations- ici in Australia and an organisation in Pretoria South Africa claed the dept of physical chemistry with J.Harley,wNel and V Pretorius.

Moving forward many decades we have seen the fid transformed into the compact mobile tool available to be used by everyday non technical people who have been trained in the operation of the device. One of the best practical uses of a portable fid is its ability to monitor CH4 - methane. This has lead to many practical application for fid monitoring, namely: Landfill gas monitoring Fugitive emission monitoring Efficiency monitoring

Landfill Monitoring LFTGN07 v2 2010 The guidance document recommends the use of a simple handle held fid to be used in conjunction with a probe to "sniff" the air just above the cap, thus detect significant concentrations of methane. The second technique for monitoring capped landfill sites is the use of flux box monitoring. For reference please visit https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/321614/LFTGN07.pdf

Their have been a whole range of fid tools used from different manufacturers This includes Foxbro, Research Engineers, Perkin Elmer, to name a few, more recently the Gastec V did exist but has recently ceased production. However non of these were intrinsically safe. This has major issues when monitoring of voc's is required within a zoned area The only current intrinsically safe fid is the Datafid by inficon

Intrinsically Safe is a design specificity whereby electrical, thermal energy is limited to a level such that it could not ignite a specific hazardous atmosphere

ATEX or ATEX95 is the European directive concerning the ignition of potentially explosive atmospheres. There are currently no Atex fid an unlikely to be for the foreseeable future

There are other techniques now being used such a the tuneable laser diode. However such are the limitations of this product, means it is not the true replacement product of the portable fid