Chroma - Model S - COS -Sulphur Compounds Analysers

The gas sample comes through the sampling loop. Range is linked to the size loop and electronic amplification. Then the sample is injected into the column for separation. A controlled temperature oven allows selection the ideal temperature according to the application. The temperature setting is isothermal at 35°c.

• Detection is achieved by a photometric detector double flame.
• No quenching with the double flame
• We have linearization by compounds
• The identification of the compounds is based on their Retention Time = RT = elution from the column
• Automatic data validation with internal calibration using a DMS permeation tube.

Sequence with methods for: sample(s) / zero air / CALIB The VISTACHROM software enables the user to visualize and store data on a computer. Computer = XXX015 or 022 is needed It provide comfortable utilities to recalculate, calibrate and export data and to set-up measurement. Software allows the calculation of retention time, area, mass or concentration profiles/TREND.

Total Sulphur compounds analysis:

• H2S, mercaptans, sulfides, COS, SO2, CS2
• CS2 is not analysed by the Medor range
• Speciation and/or TOTAL Sulfur analysis

Detection limits

with loop = 250 μl and amplification 2

• 14 ppb for H2S/SO2/ MM/EM/DMS/DES/COS
• 8 ppb for DMDS & CS2

Detection range:

ppm or ppb : amplification 1&2

• 0,01 to 10 mg/m3 or 0 to 600 mg/m3
• % / ppm / ppb level depends on compounds for ex H2S = 0,01 to 10 mg/m3 = 7 ppb to 7 ppm

Relative Standard Deviation:

• RSD < 5% on concentration over 24 hrs
• RSD < 1% on Retention Time over 24 hrs

Results:

• Hardware storage in XX022 or XXX015
• MODBUS communication protocol (optional)
• 4-20mA one module for 4 outputs (optional)

Data Management:

• Full storage of chromatograms & results
• All analyses date & time stamped individually

Cycle Times:

• 10 mins in standard

Gas Supply: input 1/8" Swagelok

• Sample inlet: for 80 ml / min and 1 atmosphere (20°C)
• Cylinder Calibration inlet at 80 ml/min
• H2 at 2 bars for 70 ml/min
• Air for detector at 3 bars for 80 ml/min
• Air for carrier gas at 3 bars for 5 ml/min
• For calib, air at 50 ml/min in continue and during calibration one cycle by day at 300 ml/min

Power Supply:

• Main: 230V / 50Hz or 115 / 60Hz

Electrical consumption:

• Average: 100 VA
• Peak: 200 VA

Dimensions and weight:

• Rack: 19" - (5U)
• Height: 220mm
• Width: 482mm
• Depth: 600 mm
• Net weight: 17 kg