Tethys Instruments EXM400 On-Line Gas Analysers - Brochure

The EXM400 is an extractive online gas analyser dedicated to Continuous Emission Monitoring. It is based on UV spectroscopy that brings a higher sensitivity than infra-red and gives the possibility to measure several gases simultaneously. A high selectivity is achieved by a fast Fourier transform (FFT) on the absorbance spectrum for all the gases having a periodic structure like NH3, SO2, NO and others. All the internal gas circuit is heated at 190°C to admit directly hot and humid combustion gases. The EXM400 is presented in a standard 19" rack. This model may include a heated sampling pump as an option.