Analytical Sciences / Physico-chemical analysis / Gas analyzers / Ambient air analyzers / BTEX Analyzer 
BTEX Analyzer
VOC Analyzer by Gaseous Chromatography
The VOC72M performs three main functions: the sampling, the GC analysis and the data processing
Advantages
- Remote diagnosis, made possible without opening the hood
- 3 levels of built-in security
- Real-time chromatogram, animated synoptic, auto-diagnostic, control and maintenance data screens can be displayed while the instrument is operating
Description
Specification
Applications
Resources
The sampling is achieved with a single trap filled with a specific sorbent. Its flow through the trap is about 12 ml/min which gives a sampled volume of 165 ml with the standard 15 minute cycle (sampling time >90% of cycle time). Other cycle durations are possible from 10 to 30 minutes. A bypass flow of 35 ml/min maintain a sample input flow when the trap is not sampling.
- Cycle duration: 10, 12, 15, 20, 30 minutes (programmable)
- Measuring noise (sigma): ≤0.025μg/m3 at 0.5μg/m3 benzene
- Carry-over (memory effect): ≤0.5% on the first zero
- Lack of fit; largest residual: ≤4% of the measured value
- Surveillance de la qualité de l’air ambiant et intérieur
- Surveillance des sources industrielles émettrices de COV
- Evaluation des niveaux de benzène dans l’air autour d’une raffinerie
- Etudes de pollution photochimique (stations fixes et mobiles)
