AVL Micro Soot Sensor™ Aviation - Aviation

Industry standard for nvPM mass instrument
AVL Micro Soot Sensor™ Aviation
AVL Approach
The AVL Micro Soot Sensor Aviation works with the photo-acoustic principle and the chosen cell design (called the "resonant measuring cell") allows a detection limit of typically ~ 1 µg/m³. The MSS Aviation can be used for the measurement of non-volatile particulate matter mass concentration, as described in the AIR 6241.
Benefits at a Glance
- Transient measurement of the soot-concentration [mg/m³]
- Sensitive to soot (no interference to other components)
- Soot concentration is directly determined from primary measurement value
- High sensitivity (resolution 1μg/m³, detection limit 1μg/m³)
- Large measurement range (0.001 – 50 mg/m³)
- Easy check of the calibration factor with the included absorber window
- Low maintenance effort
Technical Data
Measured value |
Concentration of soot (mg/m³, μg/m³) |
Measuring range |
0,001 – 50 mg/m³ |
Display resolution |
0,001 mg/m³ |
Detection limit |
1 μg/m³ |
Turndown ratio |
1 : 10.000 |
Data rate |
Digital: 5Hz / Analog: 100 Hz |
Rise time |
≤ 1 sec |
Operation temperature |
5°C to 43°C |
Exhaust inlet press. tolerance |
-110 mbar to + 60 mbar |
Probe / Bypass flow |
~ 2 + 2 l/min |
Interfaces |
RS232, TCP/IP, digital I/O, analog I/O |
Power supply |
90...240 V AC, 50/60Hz, 500VA |
Unit dimensions |
Measuring unit: W x H x D ~ 19'' x 5HE x 530 mm Pump unit: W x H x D ~ 19'' x 4HE x 320 mm |
Unit weight |
Measuring unit: ~ 20 kg Pump unit: ~ 5 kg |
Laser class |
Class 1 laser product |
Measuring Principle
Photo-acoustic measurement principle
The AVL Micro Soot Sensor is based on the photoacoustic measurement method. With this measurement method, the sample gas with "black", i.e. strongly absorbing soot particulates, is exposed to modulated light. The periodical warming and cooling and the resulting expansion and contraction of the carrier gas can be regarded as a sound wave and detected by means of microphones.
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