In a number of processes two or more components must be mixed together. In instances where it comprises a vapor of a liquid in a carrier gas, traditional Bubbler Systems and the more recent Vapor Source Controllers have been used. These devices, however, often cannot handle sufficient quantities of liquid with a low vapor pressure, or perform in an imperfect way. Moreover, they cannot instantaneously provide vapor of a mixture of liquids with different vapor pressures.
Bronkhorst® has therefore developed a unique patented system to realize Mass Flow Control of Vapors with an innovation: the CEM-Liquid Delivery System (LDS). It can be applied for atmospheric, pressurized and vacuum processes, vaporizing liquid flows from 0.25 to 1200 g/h of water; for most other fluids the maximum capacity will even be higher.
The CEM-system is ideally suited to the accurate adjustment of dew or moisture. The intrinsic characteristics of large dynamic range and high accuracy ensure that the moisture level can be controlled with great flexibility from only a few ppm up to virtually 100%, whilst also maintaining a very high stability in dew point. Full functionality is retained with operating pressures as high as 100 bar.