Partial Flow Dilution Systems
The VDD partial flow dilution system is recommended for diluting large droplets ( >5 µm). The VDD dilution system is ideal for diluting liquid aerosols because of its ability to provide a variable dilution factor and minimization of losses with large droplets. The dilution factor of the VDD series is continuously variable from 1 to 10 by using a mass flow controller in combination with suction from a downstream measuring device, such as the Welas® or Promo® series of aerosol monitors.
When used in combination with a downstream measuring device the particle size distribution and concentration is measured to the highest accuracy. This combination has been successfully used in the past for measuring the droplet size of a coolant lubricant. The VDD series dilution system is specifically used for diluting highly concentrated liquid droplets. |