Chroma S is a fully automatic isothermal gas Chromatograph for the automated online analysis and monitoring of Sulphur Compounds: H2S / COS / CS2 / SO₂ / RSH.
Principle
- Continuous, uninterrupted sampling
- Sample is injected into column for separation
- Controlled oven selects optimum temperature based on application
- Detection achieved by a sulphur specific photometric double flame detector
Features
- The double flame ensures no quenching occurs
- Automatic linearisation of compounds
- Identification of compounds is based on their retention time (Elution from the column)
- Automatic data validation as standard with the internal permeation tube
Technical
| Compounds analysed: | H2S, Me-SH, Et-SH, Isopropyl-SH, Npropyl-SH, 2-butylSH, Terbutyl-SH, DMS, DES, DMDS, COS, CS2 … |
| Detection limits: | - 4 ppb double Sulphur Compounds like DMDS, CS2 …
- 7 ppb single Sulphur Compounds (H2S DMS …)
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| Detection range: | - 4 ppb to 5 ppm (Low Range)
- 100 ppb to 100 ppm (High Range)
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| Relative Standard Deviation: | - RSD < 5% on concentration over 24hrs
- RSD < 1% on Retention Time over 24hrs
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| Results: | - Full storage of chromatograms & results
- All analysed dates & times stamped individually
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| Cycle time: | - 10 minutes in standard
- Shorter cycle time depend on the application
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| Gas supply: | - Carrier Gas – Air or N2 3 bar (5mlLmin) 1/8’’
- Sample Inlet -1 Bar or ambient pressure (airmopump)
- Detector – H2 at 2 Bar (70 ml/min) 1/8’’ – Air at 3 bar (80 ml/min) 1/8’’
- Pneumatic valve 90 mL/min commutation
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