Waste incinerators, cement plants and power plants need good and reliable measurements of total gaseous mercury.

The measurement of total gaseous mercury (TGM) is a challenge due to chemical reactions and contamination.

The installed systems will often require a lot of maintanence still not giving reliable results. The OPSIS System 400Hg DOAS system is different and provides an accurate analyser that will operate with a minimum of maintanence. The OPSIS DOAS system is based on a non contact method using an optical path. For the measurement of total gaseous mercury, the gases will pass a dry catalytic converter before entering into the optical path. Besides the measurements of total gaseous mercury, the same analyser system can measure a large number of other gases required by legislation such as NOx, SO2, CO, CO2, NH3, H2O, HF, and HCl. The system meets the European EN 15267 and other international standards.