ACCURRA-S dual channel

Trace oxygen and moisture analyser: O2 ppm and dew point on one sample

ACCURRA-S 3015 plus M015 measures trace oxygen and trace moisture in one gas sample, with independent electronics and shared pneumatics.

Dual gas trace oxygen and moisture
  • 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

ACCURRA-S 3015 plus M015 measures trace oxygen (0 to 1000 ppm) and dew point (minus 80 to plus 20 C) from one sample, in one enclosure. Oxygen and moisture are the two signs of air ingress, so reading both speeds up leak diagnosis.

Updated 3 November 2026 · Figures from Sarvesh datasheets

Specifications

ItemSpecificationNotes
3015Oxygen 0 to 1000 ppm (min 0 to 100 ppm)Electrochemical
M015Dew point -80 to +20 CCeramic sensor
NotesSensor bypass valve supplied; no auto-calibration; no internal sample pump
IndependenceOwn electronics, outputs, relays and Modbus ID per channel

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

  • Independent electronics, microcontroller, 4-20 mA, relays and Modbus ID per sensor
  • Common pneumatics and one fine filter
  • Calibration history and password protection

How it works

Oxygen and moisture are the two signs of air getting into a dry inert gas, and they usually rise together. Reading both gives a faster diagnosis of a leak than either alone.

The pharma note recommends this pairing for lyophiliser back-fill gas and the catalogue lists O2 ppm with dew point in N2, H2, Ar and He. The sensor bypass valve isolates both sensors during start-up and purging.

Requirements and limits

  • Safe-area analyser; the standard sample specification applies.

Selection guidance

See the dual-gas analyser page for the full list of combinations.

Applications

Application pages where this is part of the recommended solution:

Compatible products

Frequently asked questions

What backgrounds?

Nitrogen, hydrogen, argon and helium.

Is auto-calibration available?

No, not on 3015 or M015.

Do I need a sample pump?

An internal pump is not available; use a regulated sample pressure or external pump.

Can I add hydrogen?

The catalogue lists O2 ppm with H2 percent in nitrogen as a separate pairing.

Talk to an applications engineer

Send the gas, range, pressure, temperature and area classification.

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