Sampling Systems / Aerosol Substances / Dryer

SYS 520 - Sample Switching Unit

The Sample Switching Unit SYS 520 has been developed for the determination of fractional separation efficiencies of filters or filter media at two different sampling points, that is before and after the filter.
This task can be realized with the sample switching unit SYS 520 with only one particle size analyzer economically and reproducible. With the switching unit an automated and safe exchange between the measurement of sampling lines I, II and a sampling line of a purge routine is possible (using the integrated HEPA filter).

  • Switching between different sampling points
  • Determination of fractional efficiency curves
  • Protection against to high particle loading of the particle measuring device by temporal limitation of sample flow
  • Sample switching possible at difficult to access positions

The SYS 520 is designed for direct connection to the Laser Aerosol Particle Size Spectrometer LAP 322.

The models SYS 520/P and SYS 520/H are integrated in test stand solutions and have a hardware interface that both transmitsthe control signals and ensures the power supply.

The model SYS 520/S is designed for use with various particle measurement devices, like Particle Counter for Air and Gases LAP 340. The control of the device via a serial communication port (RS 232) by means of a computer.

With the help of analysis and control software PASWin or the software for filter test rigs PAFWin, it is easy possible to switch manually or automatically between two sampling lines.

SYS 520, SYS 520/P SYS 520/H, SYS 520/S
Power supply
24 VDC 24 VDC
AC adapter
100…240 VAC / 24 VDC 100…240 VAC / 24 VDC
Sampling tubes
4.7 mm x 3.4 mm (Tygon-Silicone) 9.6 mm x 6.4 mm (Tygon-Silicone)
Dimensions (HxWxD) 200 mm x 160 mm x 130 mm 210 mm x 300 mm x 150 mm
Weight 1.8 kg 3.1 kg