2.HORIBA APNA 370 CE for continuous monitoring of
atmospheric NO, NO2, NOx
Main features:
- Complies with SR EN 14211/2005 standard
- Uses cross-flow modulated semi decompression
chemiluminescence method
Technical details:
- Measurement domain : 0-10 ppm (4 possible manual
or automatic domain selections, with automatic adjustment 
of work range)
- Lowest detection limit : 0.5 ppb
- Gas sample flow : approximately 0.8 l/min
- Automatic and manual calibration
- Self-scaling function for automatic domain selection suited
for the increased gas concentration,
for instantaneous and average values
- Internal software with interactive menu, using the touch panel
- Programmable averaging time : 3 min, 30 min, 1 hour
- Values units rendition : ppm, ppb, mg/m3, μg/m3
- Sampled date storage :
-1000 average values for 3 min
-1000 average values for 30 min
-100 average values for 3 h
-1000 integrated values for 1h