» Products» Газ анализатори» VOC72M – VOC ANALYZER BASED ON GAS CHROMATOGRAPHY (GC) AND PHOTO-IONIZATION DETECTOR (PID)

VOC72M – VOC ANALYZER BASED ON GAS CHROMATOGRAPHY (GC) AND PHOTO-IONIZATION DETECTOR (PID)

VOC72M – VOC ANALYZER BASED ON GAS CHROMATOGRAPHY (GC) AND PHOTO-IONIZATION DETECTOR (PID)

TUV Compliant following EN 14662-3 for benzene monitoring. Standard measured compounds: Benzene, Toluene, Ethylbenzene, m+p-Xylene, o-Xylene, 1-3 Butadiene (up to 40 other compounds on request). Compact and fully automated BTEX analyzer for the monitoring of Benzene, Toluene, Ethylbenzene, m+p-Xylene, o-Xylene, 1-3 Butadiene, etc. providing equal performance to the laboratory chromatographs. Particularly well-suited monitor for fixed or mobile ambient air quality monitoring stations. Robust and low maintenance analysis instrument, ready to use in less than 30 minutes. Performs all the functions (sampling, analysis and data management) in a simple and completely autonomous mode. TUV Compliant following EN 14662-3 for benzene monitoring.

Applications:

  • Ambient air monitoring
  • Monitoring of industrial sources emitting VOCs
  • Photochemical pollution studies (stationary and mobile laboratories)

Features:

  • Standard measured compounds: Benzene, Toluene, Ethylbenzene, m+p-Xylene, o-Xylene, 1-3 Butadiene (up to 40 other compounds on request)
  • Memory 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
  • GC column equipped with an innovative liquid-cooler; retention times are stable even with a fluctuating temperature
  • Ultrafast trap heater (heating rate >160°C/second)
  • 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
  • Equipped with LCD screen
  • High sensitivity, stable and linear response PID detector
  • Long-life capillary column
  • Self-contained and completely automated
  • Synoptic flow diagram display
  • Quick check of the chromatogram peaks possible directly on-screen, without the use of a compute

Specifications:

Specifications based on 15 min cycle:

  • Measuring ranges: maximum 1000μg/m3  (programmable)
  • Units: ppb or μg/m3 (programmable)
  • Cycle duration: 10, 12, 15, 20, 30 minutes (programmable)
  • Measuring noise (sigma): ≤0.025μg/m3 at 0.5μg/m3 benzene
  • Lower detectable limit (2s): ≤0.05μg/m3 benzene
  • Carry-over (memory effect): ≤0.5% on the first zero
  • Long-term span drift: ≤4% on 15 days
  • Lack of fit; largest residual: ≤4% of the measured value
  • Repeatability standard deviation: ≤0.05μg/m3 at 5μg/m3benzene 
  • Sample flow: 50ml/minute
  • Flow control: integrated vacuum pump + heated micro capillary tube
  • Trap adsorbent: Carbopack®
  • Sampling temperature: 35°C
  • Desorption temperature / heating rate: 380°C (programmable) / > 160°C/second
  • Injection valve: 6-port (heated)
  • GC column: stainless steel 15m x 0.25mm x 1μm apolar

• Carrier gas control: electronic pressure control

• Temperature control: 20-170°C± 0.1°C. 5 ramps up to 30°C/minute.

• Cooling: liquid heat exchanger and thermo-electric cooler

  • GC detector: Photo-ionisation (PID) 10,6eV with nitrogen curtain
  • Detector's temperature: 140°C(programmable)
  • Gas supply: Nitrogen 6.0 (99.9999%) 3.2 ± 0.2 bar 15 ml/minute
  • Serial link: RS232 or RS422
  • Ethernet port: RJ45 socket, UDP protocol
  • USB port: USB socket format 1.0
  • Dimensions: (LxWxH): 601mm x 483mm x 133mm
  • Weight:12.5 kg

Certifications:

TUV Compliant following EN 14662-3 

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