Sustainable Process Gas Monitoring

Fresenius Umwelttechnik has 25 years experience in developing and manufacturing various gas monitoring systems and provides analysers, services and system integration. The devices are available for stationary, portable or fully system integrated applications and is able to combine various measurement technologies.

The gas analyser 315 allows easy online measurement of IR-active substances in gas streams having temperatures of up to 300 degrees Celsius, for example:

Formaldehyde monitoring in the exhaust of gas engines on biogas or landfill gas plants, measurements of gas constituents that are usually not captured without loss when using a gas cooler. All devices are equipped with automatic calibration the system temperature is kept constant a second measurement under negative pressure complements the first measurement under atmospheric pressure. This reduces the absorption of IR radiation under lower pressure, since there are less gas molecules in the measuring cell. The reduction of this absorption depends on air pressure and gas concentration. Both measurement procedures allow calculating the gas concentration. No calibration gas needed on site.

The major advantages of this technology are the combination of easy handling; high long term stability; regulation of a heated sample gas line and a data communication via integrated computer. Using the measuring principle of NDIR makes the devices reliable and thrifty. All other IR active substances in different gas-matrix are available.