Gas Chromatography Volatil Organic Compounds (BTEX) Analyzer AIR QUALITY MONITORING SYSTEMS T h e V O C 7 2 M ’ s m e t r o l o g y, i n accordance with EN 14662-3 standard for benzene measurement, is based on gas chromatography (GC) coupled with a photo-ionization detector (PID). SPECIFIC FEATURES: S tandard measured compounds: Benzene, Toluene, Ethylbenzene, m+p-Xylene, o-Xylene, 1-3 Butadiene... P erforms all the functions, such as: sampling, analysis and data management, in a simple and completely autonomous mode Self-contained, completely automated and ready to use in less than 30 minutes G C column equipped with an innovative liquid-cooler; retention times are stable even with a fluctuating temperature Long-life capillary column High sensitivity, stable and linear response PID detector U ltrafast trap heater (heating rate >160°C/second) Q uick check of the chromatogram peaks possible directly on-screen, without the use of a computer R obust and low maintenance instrument (no PID lamp cleaning) M emory effect (up to 10 times lower than required by the standard EN14662-3) allowing the automatic calibration of the analyser on a single cycle without an external PC Remote diagnosis, made possible without opening the hood Replacement of the trap in less than 2 minutes. No adjustment required Use of a single gas source (nitrogen) 3 levels of built-in security R eal-time chromatogram, animated synoptic, auto-diagnostic, control and maintenance data screens can be displayed while the instrument is operating MAIN APPLICATIONS: Ambient air monitoring Monitoring of industrial sources emitting VOCs Photochemical pollution studies (stationary and mobile laboratories) ESA ConnectTM Free Apps iOS / Android Simultaneous multi-screen remote access via Wifi or Lan using the dedicated application ESA ConnectTM for control, diagnostics, software update...

BTEX MONITORING Gas Chromatograph BTEX Analyzer VOC72M TECHNICAL SPECIFICATIONS The VOC72M performs three main functions: the sampling, the GC analysis and the data processing. Measuring ranges Cycle duration Sampling: 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. Lower...