Non-dispersive Microwave Spectrometry

Non-dispersive microwave spectrometry is a unique technique for measurement of ammonia in gas mixtures. Molecules with a permanent dipole absorb in the microwave range of the electromagnetic spectrum. Especially at low pressures the absorption bands are very narrow, so low pressure measurement in the microwave range is the most selective available. The measuring range of the Siemens MIPAN is 0-20/200/2000 ppmv in gaseous samples.