--- title: Sample Vaporiser SV-200 and SV-400 | Sarvesh url: https://www.sarveshanalytics.com/sample-vaporisers.html description: SV-200 cryogenic sample vaporiser and SV-400 smart vaporiser for accurate analysis of liquefied and wet samples, with no loss of sample. updated: 2026-11-03 source: html --- SV-200 and SV-400 # Sample vaporisers for cryogenic and wet samples SV-200 brings cryogenic liquid samples to ambient temperature quickly, so the gas the analyser sees matches the liquid. SV-400 re-vaporises condensate formed in the sample line, so wet samples arrive complete. - 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 SV-200 vaporises cryogenic samples (200 W, up to 10 LPM, with a bypass line) so the analyser sees gas of the same composition as the liquid. SV-400 vaporises condensed sample on the go for wet analysis, using 100 W and a built-in controller set between 100 and 200 C. Updated 3 November 2026 · Figures from Sarvesh datasheets ## Why Sample vaporisers SV-200 and SV-400 ### Representative cryogenic samples SV-200 heats up to 10 LPM of sample with a 200 W exchanger and has a bypass with needle valve for fast flushing at the tapping point. ### No loss of sample SV-400 keeps the sample in the gas phase at a user-set temperature of 100 to 200 °C, for accurate wet analysis. ### Safe to leave running A thermostat protects against over-temperature on both models; SV-400 adds a built-in controller for dual safety. ## Specifications | Item | Specification | Notes | |---|---|---| | SV-200 heater | 200 W, 230 V AC 50 Hz | | | SV-200 flow | Max 10 LPM | Bypass line with needle valve for quick flushing at the tapping point | | SV-200 connections | Mounting flange 1.25 or 2 inch ANSI 150# | Inlet weld-on bush for 8 mm OD tube; outlet 6 mm or 1/4 inch OD | | SV-200 monitoring | Thermostat for over-temperature protection; Pt100 at the inlet and two at the outlet | 370 x 230 x 385 mm; all SS316 wetted parts | | SV-400 heater | 100 W, 110 or 230 V AC 50 Hz | Multi-pass SS316 heat exchanger | | SV-400 flow and temperature | Max 6 LPM; 100 to 200 C, user selectable | Built-in temperature controller and thermostat for dual safety | | SV-400 build | 1/4 inch NPTF; wall mount; 250 W x 265 H x 160 D mm | All SS316 wetted parts | From the current Sarvesh product datasheets and company profile. Specifications may change without notice as products improve. The final responsibility to check that a product meets the process and analyser requirement remains with the customer. ## Key features - SV-200: raises cryogenic sample to ambient temperature quickly, avoiding condensation on the sample line - SV-200: easy to install and service, with a drain outlet for condensate - SV-400: plug-and-play, vaporises condensate formed in transport so the sample stays gaseous - SV-400: built-in temperature controller with user-set heater temperature ## How it works A liquid or partly liquid sample cannot be sent directly to a gas analyser. Cryogenic oxygen, nitrogen and argon are drawn as liquid, and if they are warmed unevenly the light components boil first, so the gas that reaches the analyser is not the composition of the liquid. A vaporiser heats the sample quickly enough to turn it all to gas. SV-200 does this for cryogenic samples and avoids condensation on the sample line. SV-400 is for wet analysis, where condensed sample must be vaporised rather than removed, since removing it would remove soluble components of the gas. ## Selection guidance Choose SV-200 for liquid and cold gas sampling in air separation and storage tank measurements. Choose SV-400 when water or other condensate in the sample is part of what you want to measure. ## Applications Application pages where this is part of the recommended solution: - [Oxygen purity in air separation plants](https://www.sarveshanalytics.com/applications/oxygen-purity-air-separation-plant.html) - [Gas purity certification and cylinder filling](https://www.sarveshanalytics.com/applications/gas-purity-certification-and-cylinder-filling.html) ## Compatible products [ ### ACCURRA-S 3090 Oxygen purity analyser for 95 to 100 % O2 with ambient pressure and temperature compensation. View ACCURRA-S 3090 ](https://www.sarveshanalytics.com/oxygen-gas-analyser.html)[ ### ACCURRA-S Online analyser for trace, percent and purity O2, CO, CO2, CH4 and dew point; can measure two gases from one sample. View ACCURRA-S ](https://www.sarveshanalytics.com/safe-gas-analyser.html)[ ### Headline filters Particulate, coalescing and PTFE membrane filters from Headline Filters, UK, for analyser protection. View Headline filters ](https://www.sarveshanalytics.com/headline-filters.html) ## Frequently asked questions **Why vaporise cryogenic samples?** So the analyser sees a gas with the same composition as the liquid. **Is there a bypass line?** On SV-200, yes, with a valve for quick flushing. **How much power do they use?** SV-200 heater is 200 W and SV-400 is 100 W. **How is temperature controlled?** SV-400 has a built-in controller with a user-set temperature of 100 to 200 C. SV-200 has a thermostat for over-temperature protection and Pt100 sensors at inlet and outlet. ## Related pages - [Sampling components and systems](https://www.sarveshanalytics.com/sampling-components.html) - [SGI-300](https://www.sarveshanalytics.com/sample-coolers.html) - [i-Cons and SGI-320](https://www.sarveshanalytics.com/smart-systems-for-gas-analyser.html) - [Sample probes SP-100, SP-200 and SP-300](https://www.sarveshanalytics.com/sample-probes.html) - [SRP-400 retractable sample probe](https://www.sarveshanalytics.com/retractable-sample-probe.html) - [Headline filters](https://www.sarveshanalytics.com/headline-filters.html) - [Engineered analyser panels](https://www.sarveshanalytics.com/analyser-sampling-panels.html) - [**Browse all gas analysers**](https://www.sarveshanalytics.com/gas-analyser.html)