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DIL 551

Dilution System DIL 551 for static dilution (1:10) of aerosols at static air flow rate (28,3 L/min)

The DIL 551 dilution system serves for the defined and reproducible reduction of particle concentrations in aerosols.
DIL 550 Dilution System for Aerosols, type 551, view from right side
The main application of the DIL 551 dilution system is the verification of test aerosols for testing clean rooms. DIN EN ISO 14644-3 defines the necessity of appropriate dilution systems when using test aerosols for verification. In the applied principle that corresponds to the standard VDI 3491-15, particles are removed from the sample aerosol according to the specified dilution ratio. The particle size distribution remains unchanged.

Standards

VDI 3491-6
ISO 14644-3
VDI 2083
VDI 3491-15
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Benefits

  • constant and reproducible aerosol dilution even under changing operation conditions
  • internal monitoring of the dilution ratio and visualisation
  • suitable for mobile operation (compressed air supply is not required)
  • long-term lifetime, minimum maintainance required
  • precice operation for both overpressure and underpressure
  • flow rate and dilution factor adjustable for customer requirements

Applications

  • validation of laminar air flow boxes/benches and clean room/environments
  • evaluation of filtration separation efficiency
  • analysis of highly concentrated aerosols
  • aerosol research

From the aerosol flow to be diluted, a sample is passed through a thin capillary. The particle concentration of the capillary flow rate remains unchanged, whereas a HEPA filter removes nearly all particles from the bypassing flow rate. After the capillary and filter both flows are remixed. The dilution ratio results from the ratio between the two single flow rates.

Parameter title Unit Value
setting method - manual
aerosol, volumetric flow rate L/min 28,3
dilution factor - 10
sample condition, outlet - diluted aerosol
purpose of conditioning - dilution of aerosols
power supply - 12 V DC; 30 mA
sample condition, inlet - non-diluted aerosol
weight kg 1,5
dimensions (w × h × d) mm 110 × 160 × 300
environmental condition, max. counterpressure kPa ± 35
environmental condition, temperature °C 10 ... 50
pressure drop kPa 0,8 ... 1,3
hose connector mm Ø 8 (optional Ø 10)

Silimar products

DIL 550

Dilution System DIL 550 for static dilution (1:100) of aerosols at static air flow rate (28,3 L/min)

Dilution System for Aerosols DIL 550, frontal view
detail view

DIL 555

DIL 555 Dilution System for static dilution (1:100) of aerosols at static air flow rate (2,83 L/min)

Dilution System for Aerosols DIL 555, frontal view
detail view

DIL 556

DIL 556 Dilution System for static dilution (1:10) of aerosols at static air flow rate (2,83 L/min)

Dilution System for Aerosols DIL 556, frontal view
detail view

DIL 554

DIL 554 Dilution System for static dilution (1:100) of aerosols at static air flow rate (28,3 L/min) for mobile operation

Dilution System for Aerosols DIL 554, front view
detail view

DIL 552

Dilution System DIL 552 for static dilution (customised) of aerosols at static air flow rate (28,3 L/min)

Dilution System for Aerosols DIL 552, frontal view
detail view

DIL 553

DIL 553 Dilution System for static dilution (1:100 or 1:10) of aerosols at static air flow rate (56,6 or 50 L/min)

Dilution System for Aerosols DIL 553, frontal view
detail view

DIL 557

DIL 550 Dilution System for static dilution (customised) of aerosols at static air flow rate (customised)

Dilution System for Aerosols DIL 557, frontal view
detail view