--- title: Compressed Air Dew Point Analyser, ISO 8573 url: https://www.sarveshanalytics.com/applications/compressed-air-and-instrument-air-dew-point-iso-8573.html description: Compressed air dew point analyser with ACCURRA-S M015. Compressed-air quality standards set a pressure dew point class; continuous monitoring catches dryer failure. updated: 2026-11-02 source: html --- Air separation and industrial gases # Dew point analyser for compressed air and instrument air (ISO 8573) Compressed-air quality standards set a pressure dew point class; continuous monitoring catches dryer failure. Sarvesh supplies ACCURRA-S M015, 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 M015 (-80 to +20 C). Compressed-air quality standards set a pressure dew point class; continuous monitoring catches dryer failure. M015 is supplied without a pump and has no auto-calibration; fits a pressurised line. Updated 2 November 2026 · Figures from Sarvesh datasheets ## The measurement and why it matters Compressed-air quality standards set a pressure dew point class; continuous monitoring catches dryer failure. This application matches the catalogue specification directly. 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: pharma, food, automotive, electronics plants; dryer OEMs. 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 | |---|---|---|---| | M015 | Dew point | -80 to +20 C | Ceramic sensor; no internal pump, no auto-calibration | ## Process notes ### What the analyser reads here Gases of interest: H2O dew point. Analyser fit: ACCURRA-S M015 (-80 to +20 C). 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 M015 is supplied without a pump and has no auto-calibration; fits a pressurised line. We would rather confirm these points at the start than discover them at commissioning, so please include them with your process details. ## Related applications This page overlaps with: - [Dew point and trace moisture in process gases](https://www.sarveshanalytics.com/applications/dew-point-and-trace-moisture-in-process-gases.html) ## 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: H2O dew point - The point to confirm: M015 is supplied without a pump and has no auto-calibration; fits a pressurised line. ## 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) ## Frequently asked questions **Which analyser suits compressed-air and instrument-air dew point (ISO 8573)?** ACCURRA-S M015 (-80 to +20 C) Compressed-air quality standards set a pressure dew point class; continuous monitoring catches dryer failure. **What should I check before ordering for compressed-air and instrument-air dew point (ISO 8573)?** M015 is supplied without a pump and has no auto-calibration; fits a pressurised line. **Who typically needs this?** Typical buyers in India: pharma, food, automotive, electronics plants; dryer OEMs. **Can Sarvesh support a variation of this application?** Yes. If your process differs from the usual case, send the details. Application engineering is where we start every project, and bespoke applications are welcome. ## Further reading - [Process Sensing: compressed air monitoring](https://www.processsensing.com/en-us/industries/compressed-air-monitoring-clean-rooms.htm) - [Rotronic: monitoring compressed air systems](https://www.rotronic.com/rms/applications/monitoring-compressed-air-systems) ## More in Air separation and industrial gases - [Oxygen purity in air separation plants](https://www.sarveshanalytics.com/applications/oxygen-purity-air-separation-plant.html) - [Medical oxygen plant purity monitoring](https://www.sarveshanalytics.com/applications/medical-oxygen-plant-purity-monitoring.html) - [Nitrogen purity and trace oxygen](https://www.sarveshanalytics.com/applications/nitrogen-purity-trace-oxygen.html) - [Dew point and trace moisture in process gases](https://www.sarveshanalytics.com/applications/dew-point-and-trace-moisture-in-process-gases.html) - [Gas purity certification and cylinder filling](https://www.sarveshanalytics.com/applications/gas-purity-certification-and-cylinder-filling.html) - [Liquid oxygen, nitrogen and argon tanker and bulk-storage quality check](https://www.sarveshanalytics.com/applications/liquid-oxygen-nitrogen-and-argon-tanker-and-bulk-storage-quality-check.html) - [Argon recovery and purification](https://www.sarveshanalytics.com/applications/argon-recovery-and-purification.html) - [Helium purity and recovery](https://www.sarveshanalytics.com/applications/helium-purity-and-recovery.html) - [Dry ice and liquid CO2 plant purity](https://www.sarveshanalytics.com/applications/dry-ice-and-liquid-co2-plant-purity.html) - [Food-grade CO2 recovery from distilleries, breweries and fermentation](https://www.sarveshanalytics.com/applications/food-grade-co2-recovery-from-distilleries-breweries-and-fermentation.html) - [Medical nitrous oxide purity](https://www.sarveshanalytics.com/applications/medical-nitrous-oxide-purity.html) - [Medical-air and breathing-air quality](https://www.sarveshanalytics.com/applications/medical-air-and-breathing-air-quality.html) - [Laser-cutting nitrogen and oxygen assist-gas purity](https://www.sarveshanalytics.com/applications/laser-cutting-nitrogen-and-oxygen-assist-gas-purity.html) - [**All air separation and industrial gases applications**](https://www.sarveshanalytics.com/industries/industrial-gas-plant-gas-analysers.html) - [Browse analysers by gas](https://www.sarveshanalytics.com/gas-analyser.html)