AVL Micro Soot Sensor Transient High Sensitive Soot Measurement
08.04.2010
Requirements on the measuring device
迪尔玛 罗塞夫High resolution and nsitivity to生活大爆炸第七
verify lowest emissions
sadaTransient measurement
procedure
Low maintenance effort
High reproducibility and
repeatability
Easy integration into test beds and
easy installation on a vehicle
sm什么意思AVL Micro Soot Sensor
新年快乐英文怎么写Transient measurement of soot
concentration
With high nsitivity
(detection typically ~ 5 µg/m³)
Sensor signal is directly nsitive to
soot concentration without cross
nsitivities
Standard interfaces职称英语成绩查询
(RS232 with AK protocol, DIO,
Analogue I/O, TCP/IP, ...)
Exhaust gas will be directed through a measuring chamber and thermally animated by a modulated lar beam
Modulated heating produces periodic pressure pulsation, which will be detected by a microphone as acoustic wave
Signal will be amplified in a pre-amplifier and filtered in a …Lock-In“-amplifier.
Sample diluted exhaust (CVS,
SPC, or Conditioning Unit)Modulated Absorption Modulated Expansion
Acoustic detection by microphone
iduSound Wave
Modulated IR -Light Lock-In Recording
Measuring Principle
Modulated lar beam Microphone
care什么意思PA cell
Standing acoustic wave
Acoustic Notch filter Significant increa of日语翻译考试
nsitivity.
Measuring principle
Realisation as …resonant“measuring cell
Thereby a standing
pursue用法
acoustic wave is be
generated
