Aerosol Sensor Test System
Test System for development, testing and calibration of active or passive aerosol sensors (PM sensors, PN sensors). Additionally the range of application ius extended to the development, testing and calibration of sensors for number or mass-related determination of the particle loading of aerosols (PMx-and PNx- sensors). The wide field of application is made possible on the one hand by the flexible sensor integration (active and passive sensors) and on the other hand by the realisation of a wide volume flow range. On customer request, the test system can be equipped with 2 measuring sections to cover volume flow rates between 0,8 ... 40 m³/h and 40 ... 450 m³/h.
Benefits
providing stable, defined aerosols at variable volume flow rates
generation of solid and/or droplet aerosols
adaption to customer-specific requirements possible
integration of Topas equipment and external devices
Applications
calibration and quality assurance of PM sensors during production
testing of PMx and PNx fine dust sensors during development
studies on the ageing behaviour of sensors
aerosol-technical fundamental resear
Principle
The main components of the test system are: a controlled blower to generate the main volume flow, a measuring duct divided into 3 sections, an aerosol generator (ATM 222) to generate the test aerosol and a laser aerosol spectrometer for the reference aerosol analysis. The blower sucks ambient air through the measuring duct via a pre-filter. Thereby exposing the air in the first duct section to a test aerosol. A distribution system ensures an optimal distribution of the test aerosol in the measuring duct.
Technical data
| Parameter | Unit | Value |
|---|---|---|
| Test flow rate | m³/h | 0.8 … 450 |
| Test concentration | µg/m³ | 5 … 1000 (at 100 m³/h) |
| Differential pressure of test specimen | Pa | max. 10,000 (at 450 m³/h) |
| Operating medium | – | Air / Compressed air |
| Compressed air supply | bar | max. 10 |
| Power supply | – | 400 VAC, 25 A |
| Particle measurement instruments | – | Customer-specific (e.g., aerosol spectrometer) |
| Integrated sensors | – | Differential pressure, temperature, relative humidity, absolute pressure |
| Channel inner diameter | mm | 150 |
| Overall dimensions (W × H × D) | mm | 2300 × 1500 × 900 |
| Weight | kg | approx. 400 |
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