Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Time resolved gas measurement result of the photoacoustic sensor normalized to the zero concentration. Due to the sweep over the complete resonance peak the data rate is around 0.25 min. The noise analysis showed a noise equivalent (1 ) of approximately 32 ppb. Therefore the sensor can detect concentrations of around 200 ppb with 6 confidence.
