--- title: Gas Analysers for OEMs and System Builders | Sarvesh url: https://www.sarveshanalytics.com/oem.html description: Build an ACCURRA gas analyser into your furnace, generator, dryer or skid. Designed and made in India, with Modbus, 4-20 mA and alarms. Request an OEM quote. updated: 2026-11-04 source: html --- For OEMs and system builders # The analyser inside your equipment, made in India. Furnaces, nitrogen and oxygen generators, gas mixers, air dryers, electrolysers and process skids all need a gas reading their customers can trust. ACCURRA analysers are designed and built by Sarvesh in Pune, configured from a published ordering code, and wired to the outputs your control system already uses. Why builders design in ACCURRA ## Less to engineer, less to stock, less to explain to your customer. 01 ### One code, one configuration Every ACCURRA-S and ACCURRA-Hz is specified by a published ordering code: gas, range, second channel, pump, auto-calibration and power. Your drawing and your purchase order quote the same code, so every repeat unit matches the first. 02 ### Speaks your control system Isolated 4-20 mA scaled to any part of the range, Modbus RTU over RS 485, and failsafe alarm relays set as Lo-LoLo, Lo-Hi or Hi-HiHi. Your PLC reads the value, the status and the alarms without an interface card. 03 ### Two gases, one enclosure ACCURRA-S carries two different sensors in series, each with its own electronics, output, relays and Modbus ID. Oxygen and dew point, or methane and CO2, take one panel cut-out and one line on your bill of materials. 04 ### Fewer consumables for your customer ACCURRA-TCD needs no reference gas, so your design drops a cylinder and a regulator. Paramagnetic oxygen models have no consumable sensor. Calibration and alarm history are stored in the analyser for audits. 05 ### The whole sample path Probes, filters, coolers, the i-Cons conditioner and the SV-200 vaporiser come from the same supplier as the analyser, with Headline Filters supplied through Sarvesh. One supplier answers for the reading, from the tapping point to the output. 06 ### Designed and made in India Developed by our own R&D team and built at our Talwade factory since 2002, under a quality system certified to ISO 9001:2015 by TÜV. An Indian-made analyser adds Indian-made content to the equipment you sell. Match it to your machine ## What you build, and the analyser that goes in it. Each row links to the application note your engineers can use to check the measurement point and the sample path. [Furnace atmospheres](https://www.sarveshanalytics.com/applications/heat-treatment-furnace-atmosphere.html) [CAB furnaces](https://www.sarveshanalytics.com/applications/aluminium-controlled-atmosphere-brazing-furnaces.html) [Nitrogen purity](https://www.sarveshanalytics.com/applications/nitrogen-purity-trace-oxygen.html) [Medical oxygen plants](https://www.sarveshanalytics.com/applications/medical-oxygen-plant-purity-monitoring.html) [Welding gas mixtures](https://www.sarveshanalytics.com/applications/welding-and-laser-gas-mixtures.html) [Boiler flue oxygen](https://www.sarveshanalytics.com/applications/boiler-and-furnace-oxygen-flue-gas.html) [Compressed air dew point](https://www.sarveshanalytics.com/applications/compressed-air-and-instrument-air-dew-point-iso-8573.html) [CA fruit stores](https://www.sarveshanalytics.com/applications/controlled-atmosphere-ca-and-ulo-fruit-stores.html) [Glove boxes](https://www.sarveshanalytics.com/applications/glove-boxes-and-isolators-o2-and-moisture.html) [Electrolyser gas](https://www.sarveshanalytics.com/applications/hydrogen-electrolyser-gas-analysis.html) [Blanketing and inerting](https://www.sarveshanalytics.com/applications/nitrogen-blanketing-and-inerting.html) [Biogas and CBG](https://www.sarveshanalytics.com/applications/biogas-and-cbg-methane-co2-analysis.html) | You build | The measurement | Analyser | Application note | |---|---|---|---| | Heat-treatment, sintering and bright-annealing furnaces | Trace oxygen, dew point, hydrogen | 3015 + M015, ACCURRA-TCD | | | Controlled-atmosphere brazing furnaces | Oxygen ppm and dew point from one tapping | 3015 + M015 | | | PSA and membrane nitrogen generators | Residual oxygen in the product | 3015 or 3030 | | | PSA and VPSA oxygen plants | Oxygen purity, about 93 % | 3090 or 3130 | | | Gas mixers for welding and food packaging | CO2 and oxygen in the blend | 6030, 3030, ACCURRA-TCD | | | Boilers, burners and thermic-fluid heaters | Flue gas oxygen for combustion trim | ACCURRA-Zr | | | Compressed air dryers | Pressure dew point | M015 | | | CA stores and ripening rooms | Oxygen and CO2 in the room | 3030 + 6030 | | | Glove boxes and isolators | Oxygen ppm and dew point | 3015 + M015 | | | Hydrogen electrolysers | Hydrogen in oxygen, oxygen in hydrogen | ACCURRA-TCD, ACCURRA-Hz | | | Dryer, reactor and solvent skids in classified areas | Oxygen in the inert gas | ACCURRA-Hz, INFINITY-Tx | | | Biogas upgrading skids and gas gensets | Methane and CO2 | 4030 + 6030 | | Building something not on this list? Send the gas, the range and the conditions at the tapping point. Bespoke applications are where we start every project. Integration at a glance ## What your design team needs to know. From the ACCURRA datasheets. Full figures, ordering codes and dimensions are in the [datasheets](https://www.sarveshanalytics.com/downloads.html). | Item | ACCURRA-S (safe area) | ACCURRA-Hz (hazardous area) | |---|---|---| | Enclosure | 19 inch rack or panel, 134 H x 483 W x 180 or 280 D mm, IP 20, about 6 kg | Wall mounted, 410 H x 370 W x 245 D mm, IP 66, about 12 kg; Gas Group IIC, Zone 1 and 2, T6 as per IS/IEC 60079-1:2014 | | Power | 100 to 240 V AC, 50/60 Hz, 45 W | 24 V DC, 30 W, or 100 to 240 V AC, 50/60 Hz, 45 W | | Analog output | Isolated 4-20 mA, user-configurable over the measurement range; dual range with range ID relay | Isolated 4-20 mA, dual range, maximum load 500 ohm | | Communication | Modbus RTU over RS 485: read the measured value, status, set-up and history | | | Relays | Two independent failsafe alarm relays, set as Lo-LoLo, Lo-Hi or Hi-HiHi; relays for fault, sample pump, range ID or calibration valves, by model | | | Calibration | Calibration check facility; optional cyclic and remote auto-calibration; output freeze or follow during calibration | Calibration without opening the covers, tamper-proof; optional auto-calibration through external valves | | Records | Calibration history with deviation values, alarm and fault history; password-protected set-up | | | Sample | Dry, oil-free, non-condensing; 2 to 10 psig, about 1 LPM (0.6 LPM for ACCURRA-TCD), dust below 3 micron. Where your sample differs, we design the conditioning around it. | | How an OEM project runs ## From your specification to the units on your line. ### 1. Your specification Send the equipment, the gas, the range, the sample conditions and the number of units you expect to build. A data sheet or a drawing is enough to start. ### 2. Application review An applications engineer checks the measurement point and the sample path, then fixes the model, range and options as one ordering code. ### 3. Your first build The first unit is built, tested and calibrated at our Talwade factory to documented procedures, and fitted into your prototype or first machine. ### 4. Repeat units Later units are built to the same ordering code and configuration, so the analyser in your hundredth machine behaves like the one in your first. ### 5. Your customer's plant Our support line, spares and calibration advice stay available to you for the installed base, from our office in Pune. ### Questions first? Call sales on [+91 94 2300 4179](tel:+919423004179), or write to [info@sarveshindia.com](mailto:info@sarveshindia.com?subject=OEM%20supply). ### What happens next Your request goes straight to our sales and applications team, who will reply with questions or a proposal for your build. ### Already have a specification? Attach it to the form, or use the [application data sheet](https://www.sarveshanalytics.com/application-data-sheet.html) for the process details. ### Datasheets ACCURRA-S, ACCURRA-Hz, ACCURRA-TCD, ACCURRA-Zr and the sample conditioners are on the [downloads page](https://www.sarveshanalytics.com/downloads.html).