RANGE / PURITY
HOW MEASUREMENT RANGE AFFECTS ANALYZER CHOICE
Depending on sensing technology and configuration , gas analyzers can measure gas concentration from complete purity to tiny traces .
Applications which control processes for safety and efficiency need to ensure that the gas concentration stays within a certain level . Gas purity measurements need to measure ultra-trace levels of contamination to ensure the required purity .
% PERCENTAGE
These analyzers measure gas concentration based on its parts per hundred ratio in the gas mixture . This is often a large-scale measurement .
PPM PARTS PER MILLION
Sometimes referred to as trace-level measurements , ppm results are used for many applications , including combustion control , and emissions monitoring .
PPB / PPT ULTRA-TRACE
Gases in medical or semiconductor applications must have a very high level of purity , so it is necessary to measure even the smallest impurities .
P07