{"id":2214,"date":"2019-08-07T13:55:33","date_gmt":"2019-08-07T13:55:33","guid":{"rendered":"https:\/\/3.70.252.158\/2019\/08\/07\/cutting-off-measured-values\/"},"modified":"2023-01-03T13:25:30","modified_gmt":"2023-01-03T13:25:30","slug":"cutting-off-measured-values","status":"publish","type":"post","link":"https:\/\/www.olicem.com\/en\/2019\/08\/07\/cutting-off-measured-values\/","title":{"rendered":"Cutting off measured values"},"content":{"rendered":"
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Cutting off measured values<\/h3><\/h3><\/div>
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According to EN 15267-3, it is allowed to cut off high emissions. This prevents a few measurements from destroying the hourly average. This is an excellent feature that can be used on all primary AMS measurements.<\/strong><\/p>\n<\/div>

Over time, some plant owners with AMS equipment have benefited from maintaining their hard-wired connections between AMS equipment and data collection due to the natural limitations of the 4-20mA communication form. This limitation is based on the fact that the measurement interval is often distributed over the 4-20mA, in order to obtain the best possible resolution and thus maximum precision on the measurements. A natural consequence is that the signal saturates outside the measuring range and therefore does not go beyond 20mA. The scenario changes when measuring emissions via bus technology. Here, the entire range of the analyser can be utilised as bus signals do not get saturated. As a consequence, very high measurements are included in the hourly averages which can result in exceeding the environmental values.<\/p>\n

ReportLoq incorporates a feature that offsets the difference between hard-wired and bus connections, which means that bus technology can be used without the high measurements causing problems.<\/p>\n

Cutting off 2% of all measurements are allowed according to EN 17255-1 Annex C. Plant owners with hard-wired data collectors must therefore flag the measurements that result from the analyser being saturated. Plant owners with bus technology systems can, in turn, cut off the measured values \u200b\u200bin the environmental reporting system as long as they meet the same 2% limit. The rule thus offsets the difference between analog and digital systems.<\/p>\n

The cut-off can be carried out on all measured components and can result in significant reductions in installations with high fluctuations on primary emission values.<\/p>\n<\/div>

Cut off level<\/strong><\/h4><\/h4><\/div>

The EN 15267-3 describes that<\/p>\n<\/div>