Dilution Systems

In practice, the aerosols to be measured often have to be rendered measurable in terms of particle concentration by dilution.The ejector principle is the classic among the dilution systems and is described in VDI 3491-15. It is particularly characterized by the combination (cascading) of the individual dilution steps, whereby dilution factors of 10, 100, 1,000, 100,000 and 1,000,000 can be set.Depending on the model variants, the dilution steps can be configured for isothermal dilution of hot aerosols up to 200°C. Models made of stainless steel can be configured pressure-resistant up to 10 bar overpressure and are used successfully worldwide for measuring chemically aggressive aerosols.The Palas® dilution systems are built to be robust, simple to operate and provide a clearly defined dilution factor. The dilution factors can be checked by the users themselves on-site Differences in the dilution systems   DC 10000 KHG 10 PMPD 100 VKL 10 VKL 100 Dimensions approx. 500 • 230 • 150 mm (H • W • D) 100 • 245 • 100 mm 100 • 245 • 100 mm Weight approx. 10 kg approx. 4 kg approx. 4 kg Dilution factor 1 : 10 1 : 100 1 : 1,000 1 : 10,000 1 : 10 1 : 100 1 : 10 1 : 100 Special features Heatable until 150 °C, cascadable, chemical resistant Evaporation of volatile elements for exhaust emission measurements according to VPR Calibration Procedure AEA/ED 47382/Issue 5 (Volatile Particle Removal Efficiency), chemical resistant, heated to 200 °C Cascadable Cascadable

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DC system

Dilution cascade with electrically operated pump to dilute highly concentrated aerosols with selectable dilution factors

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KHG system

Cascadable and heatable ejector dilution system, also in overpressure up to 10 bar.

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LDD System

New dilution system for droplets and dusts up to 10 µm developed


PMPD system

Dilution system to remove volatile particles and to dilute highly concentrated aerosols for PMPD applications

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VKL system

Cascadable ejector dilution system for dilution factors of 10 – 1,000,000 also in overpressure up to 10 bar

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