Chroma CO

Technical Specifications

airmo HCHO - Formaldehyde analyzer
  • Cycle time:
    • 5 minutes for CH4 and CO2
    • 10 minutes for CH4, CO2 and CO
  • Sample volume:
    • Injection loop of 0.5 or 1 or 2 mL, depending on the concentration range.
  • Detection Limit:
    • 50 ppb with H2 (5.5)
    • 5 ppb with N2 purifier
  • Detection Range:
    • 0 – 10 ppm (CO/CH4) & 0 – 1000 ppm (CO2) in ambient air
    • 0 – 10/20/50 ppm in pure gas
  • Repeatability:
    • RSD < 2 % over 48h (concentration)
    • RSD < 0.3 % over 48h (retention time)
  • Gas supply:
    • H2 (FID and carrier gas): 30 ml/min (inlet 2 bars)
    • Air (FID): 180 ml/min (inlet 3 bars)
    • Sample inlet: vacum pump
    • Pneumatic valve 90 mL/min per commutation
  • Results:
    • Data storage
    • 4-20mA current output (option)
    • Module for 4 output 4-20 mA current output (option)
    • Modbus / Jbus or MGS1 communication protocol (option)

CO, O2 and CH4 analysis

ChromaCO is an auto-GC coupled to a flame ionization detector (FID) with a catalytic methanizer designed for the analysis of CO, CO2 and CH4 for ambient or industrial air.

A sampling loop is used to inject a given amount of sample into the analytical columns. The columns are installed in an isothermal oven. Hydrogen or nitrogen is used as carrier gas. The methanizer enables the conversion of CO and CO2 to CH4 before detection by the FID.

The Vistachrom software enables the used to visualize and store data on a PC. Furthermore, it provides comfortable utilities to recalculate, calibrate and export data and to set-up measurement. The software allows the calculation of retention time, area, mass or concentration profiles.

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