Emissions Monitoring through Long-term Sampling Bengt Löfstedt CEM 2023-08-04 View Count 3075 Monitoring of flue gas emissions is often a matter of continuous measurements. However, there is also periodic monitoring which can be divided into sampling during a short period of time, and long-term sampling which may approach continuous monitoring. Read More »
Uncertainties in Measurements Bengt Löfstedt General, AQM, CEM 2023-04-20 View Count 2152 With all efforts made on precision instrumentation, quality assurance, calibrations, parallel measurements, and adjustments, the measurement results produced by a gas monitor should be spot on, right? Well, not quite… Read More »
Instrument Interfaces Bengt Löfstedt AQM, CEM, General 2023-04-06 View Count 1776 A lot of efforts are usually spent on gas concentration measurements and making sure that the measurements are correct. However, all that is of little value if the resulting data is not available. Here is where the instrument interfaces come in play. Read More »
Good Averages, on Average? Bengt Löfstedt General 2023-03-13 View Count 1942 We all know how to calculate the average of a set of values: add the individual values and then divide by the number of them. Right? Yes, almost always right, but if you work with air quality and specifically meteorological data, you must sometimes think a little further. Read More »