vigi e-nose

Online analysis and monitoring of odorous compounds Sulfur & VOC monitoring

  • Model: vigi e-nose
  • Manufacturer: Chromatotec

The vigi e-nose is the first analyzer able to track VOC & Sulfurs at ppb/ ppt levels. It is more sensitive than human nose. It is composed by one autoGC-ED (MEDOR® Electrochemical wet cell Detector) and PID for VOCs. Zero air generator included in the same box for autonomous operation

On-line applications:

  • Fence line
  • Odor control monitoring
  • Deodorisation process
  • Fugitive emission
  • Process control / CIP


  • Automatic sampling using a loop linked to sampling pump
  • Automatic loop injection on metallic capillary column
  • Isothermal gas chromatograph
  • Detection of all compounds eluting from the column performed by MEDOR® Detector: Electrochemical wet cell Detector which is SSD Sulfur Specific Detector.
  • Signal provided by reaction between the wet cell electrolyte and the sulfur compounds
  • PID dedicated for total VOC measurement.

Key points:

  • Automatic calibration/validation of the data, with embeded permeation tube for sulfurs. No span gases required.
  • Continuous monitoring with automatic online sampling
  • Analytical performances:
    • Specific, linear and very sensitive to sulfur compounds
    • Results validation by automatic standard injection
    • Long term stability using detector installed in reservoir
  • Extremely low maintenance
    • Very long life time detector with electrolyte, up to 10 years
    • Low gas consumption, can be reduced in option
    • More than 10 years data storage
    • No cylinders required thanks to internal calibration tube and gas generators
  • Automatic control with process device
  • Intelligents system with tunable and interactive alarm levels
  • PID detector in addition to MEDOR® detector
  • Powerful VISTACHROM Chromatotec® software:
    • Remote monitoring & injection control
    • Full traceability with on board archiving of results and chromatograms
    • QC Set up and control of threshold alarms
    • Data export by MODBUS / 4-20 mA / 0-10 V
    • Time stamp results


  • Multiple stream selector (up to 16 streams with one analyser)
  • Portable olfactometer or lab olfactometer (EN 13725)
  • Modeling software with weather station for live odor/chemical impact
  • Complaints management with platform for automatic integration of perception of neighborhood
  • Explosion proof version Exp or Exd for ATEX, IECEx zone 1 and 2 and also for CSA C1D2
  • Calculation modules (Average / Statistics / Odor unit OU e/m3 and more)
  • Automatic data transfert through: Module for 4 outputs 4-20mA / Modbus RTU or TCP IP
  • 24 V DC power supply
  • Electric selection valve to reduce air consumption
  • Wall mounted box
  • Nitrogen generator when standard used for calibration is different from DMS
  • Vigiodor: dispersion modeling software for odor impact
Total VOC with PID detector
Sulfur compounds analysis: • Speciation and Total Reduced Sulfur by sum (TRS): H2S, SO2, DMS, MM, DES, DMDS, EM compounds
Detection limits*: • Sulfur detector: less than 1 ppb for H2S
• TVOC PID detector: less than 10 ppb on DMS
• 50 UO E/m3 (limit of the olfactometer)
• *more sensitive analyzers available upon request with special application
Range (adjustable depending on application): • 0/10 or 0/100 or 0/1000 (ppb or ppm)
• Calculation : Odor Index, TVOC, Total Sulfur, (OU e/m3 with XXXOU)
Relative Standard Deviation for sulfur detector: • RSD < 3 % on concentration over 48H
• RSD < 0.5% on retention time over 48H
Relative Standard Deviation for PID: • < 1% on concentration at 100ppb over 24h
Cycle Time for the following different analyses:
• H2S, SO2, MM, EM, DMS, DMDS, DES 600s
• With special application following compounds can be added :
Supervisor: • Embeded computer Windows® based with LCD display
• 128 GB of Hardware storage on SSD memory
Communication: • Ethernet, remote control
Gas supply: • Carrier: Dry air or N2 (3 bars): ≤ 4 ml/min.
• CALIB: in continuous ~ 50 ml / min.
• CALIB during validation ~ 250ml/min for M52 configuration
• Pneumatic valve 90ml/commutation
• Sampling dryer: 150 to 200 ml/min
Power supply: • Main: 230V 60Hz or 115V / 50Hz
Electrical consumption: • 150 VA
Dimensions and weights:
Rack: 19’’ (5U)
• Height: 222 mm
• Width: 482mm
• Depth: 660 mm
• Net weight: 22 Kg
Wall mounted box :
• Height: 1440 mm
• Width: 600mm
• Depth: 300 mm
• Net weight: From 45 to 70 Kg
To order: Model:
vigi e-nose (rack version)

vigi e-nose (wall mounted version)

NH3 analyzer associated (upon request)

NH3 sensor associated (upon request)





TSP vigi e-nose


vigi e-nose brochure


vigiODOR (odor plume)


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