--- title: Argon Recovery Purity Analyser | Sarvesh url: https://www.sarveshanalytics.com/applications/argon-recovery-and-purification.html description: Argon recovery purity analyser with ACCURRA-S 3015 and ACCURRA-TCD. Argon is recovered from steel and ASU off-streams and sold on trace-oxygen and nitrogen limits. updated: 2026-11-02 source: html --- Air separation and industrial gases # Argon recovery and purification: trace oxygen and nitrogen analysis Argon is recovered from steel and ASU off-streams and sold on trace-oxygen and nitrogen limits. Sarvesh supplies ACCURRA-S 3015 and ACCURRA-TCD, built in Pune, with sampling matched to the stream. - ISO 9001:2015, certified by TÜV - Designed and built in Pune since 2002 - Supplied to Reliance, Tata Steel, Indian Oil, Linde and ISRO Quick answer Use ACCURRA-S 3015 (O2 ppm); TCD (binary Ar with N2). Argon is recovered from steel and ASU off-streams and sold on trace-oxygen and nitrogen limits. TCD reads one gas against one background; argon with both O2 and N2 needs two measurements. Updated 2 November 2026 · Figures from Sarvesh datasheets ## The measurement and why it matters Argon is recovered from steel and ASU off-streams and sold on trace-oxygen and nitrogen limits. This is a good fit, with one configuration or sample-handling point to confirm before we quote. Industrial gas producers, distributors and users all buy and sell on a purity figure. A reading taken continuously, at the point where gas changes hands or enters a process, lets a plant release a batch with confidence instead of waiting for a laboratory result. Most gas-handling streams are clean, dry and pressurised, which suits the ACCURRA-S sample specification. The points to settle are usually the sample path (vaporised, regulated and vented safely) and whether the stream is a binary mixture, which is the condition for ACCURRA-TCD. Typical buyers in India: industrial gas producers, steel plants with argon recovery. Where this matches your plant, send us the gas, range, pressure and temperature at the tapping point and we will confirm the analyser and sample path. ## Models and ranges | Model | Measures | Range | Sensor and notes | |---|---|---|---| | 3015 | Trace oxygen | 0 to 1000 ppm (min range 0 to 100 ppm) | Electrochemical; no internal pump, no auto-calibration | | ACCURRA-TCD | Binary gas analysis (Ar (O2 ppm, N2)) | Binary mixtures | Thermal conductivity, no reference gas | ## Process notes ### What the analyser reads here Gases of interest: Ar (O2 ppm, N2). Analyser fit: ACCURRA-S 3015 (O2 ppm); TCD (binary Ar with N2). The table above lists each model with its range; where a row says to confirm the range, we check it against the datasheet for your application before quoting. ### What to settle before ordering TCD reads one gas against one background; argon with both O2 and N2 needs two measurements. We would rather confirm these points at the start than discover them at commissioning, so please include them with your process details. ## Sampling and installation - Every ACCURRA-S has an internal fine filter and rotameter. Regulate sample pressure and flow externally; the catalogue recommends about 1 LPM and a sample pressure of 2 to 10 psig. - Models 3015, M015, 3130 and 3190 are supplied without an internal sample pump. Tell us the sample pressure and we will confirm the sample path or add a pump. - Models 3015 and M015 have no auto-calibration, so plan a calibration routine with the right reference gas. - Keep sample lines short, clean and dry, and vent the sample somewhere safe. ACCURRA-S sample specification: non-corrosive, non-toxic, non-flammable, non-condensing and dry, free from entrained oil; sample pressure 2 to 10 psig, regulated externally; flow about 1 LPM; dust below 3 micron. Where your sample differs, we design conditioning around it. ## Send us your process data **What the data sheet asks for** Send what you have and we will ask for the rest. - The gases to measure, the range, and the accuracy you need - Background gases and their typical composition - Sample temperature, pressure and dew point at the tapping point - Dust level, and whether the gas carries tar, oil or condensable vapour - Process connection and, for ducts, the duct diameter - Where the sample vents to, and at what pressure - Area classification of the tapping point and of the analyser location, and the IP protection needed - Distance between the tapping point and the analyser - Outputs you need: 4-20 mA, dual range, relays, Modbus RTU - Calibration approach, calibration gas available, and whether blowback is required - Utilities at site: power supply, instrument air, nitrogen, steam and cooling water, and the ambient temperature range - Gases and ranges: Ar (O2 ppm, N2) - The point to confirm: TCD reads one gas against one background; argon with both O2 and N2 needs two measurements. ## Recommended Sarvesh products [ ### ACCURRA-S Trace, percent and purity analysis of O2, CO, CO2, CH4 and dew point. View ACCURRA-S ](https://www.sarveshanalytics.com/safe-gas-analyser.html)[ ### ACCURRA-TCD Binary purity or percentage with no reference gas. View ACCURRA-TCD ](https://www.sarveshanalytics.com/binary-tcd-thermal-conductivity-analysers.html) ## Frequently asked questions **Which analyser suits argon recovery and purification?** ACCURRA-S 3015 (O2 ppm); TCD (binary Ar with N2) Argon is recovered from steel and ASU off-streams and sold on trace-oxygen and nitrogen limits. **What should I check before ordering for argon recovery and purification?** TCD reads one gas against one background; argon with both O2 and N2 needs two measurements. **Who typically needs this?** Typical buyers in India: industrial gas producers, steel plants with argon recovery. **Can Sarvesh support a variation of this application?** Yes. If your process differs from the usual case, send the details. 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