Oxygen Sensor

HXXO20230311162653PEX 2560

Overview

  • Electrochemical sensor
  • Measuring ranges:
    • Standard version 0 – 100 %
    • H₂S resistant version 0.5 – 35 %
  • Measurement accuracy ±2 % of span (full scale)
  • Resolution: 0.1 Vol.%
  • Response time (t₉₀): ≈ 5 – 10 s
  • Lifetime: approx. 6 years

The oxygen sensor is only available as an additional sensor module to a RITTER »MultiGas« NDIR or NDUV sensor. The measured oxygen concentration is displayed in the provided software. The sensor is built into the casing of the RITTER »MultiGas« sensors.

The following versions are available:

  • Standard version suitable for non-aggressive gases
  • H₂S and similar acidic gases resistant version

Specifications

General features
Version Standard version H₂S resistant version
Measurement range 0.01 – 100 Vol.% O₂ 0.5 – 35 Vol.% O₂
Application Industrial, fully CO₂ resistant Industrial, fully CO₂ resistant,
shows high resistance to acid gases
Medium contact materials ABS, PVC, PPS, PTFE, stainless steel
Expected operating life ~ 1,200,000 Vol.% O₂ h
Sensor lifetime 6 years at ambient air,
depending on application
Dimensions
(H x W x L)		 74.2 mm × 31.7 mm × 56.6 mm
Weight 70 g
Tube connector 4/6 mm tube
Measurement data *
Version Standard version H₂S resistant version
Measurement range 0 – 100 Vol.% O₂ 0.5 – 35 Vol.% O₂
Resolution 0.1 Vol.% / 15 bit
Response time (t₉₀) < 10 s < 5 s
Drift ** < 1% per month < 3% per month
Linearity Error 0 – 2 Vol.% O₂: ± 0.1 abs.
2.1 – 100 Vol.% O₂: ± 0.05 rel.		 0 – 2 Vol.% O₂: ± 0.1 abs.
2.1 – 35 Vol.% O₂: ± 0.05 rel.
Repeatability *** ± 1 Vol.% O₂
Influence of Humidity –0.03 % rel. O₂ reading /
% RH
Interferences < 20 ppm O₂ response to:
100 Vol.% CO
100 Vol.% CO₂
100 Vol.% C3H8
3000 ppm NO in N₂
1000 ppm C6H6 in N₂
500 ppm SO₂ in N₂
< 100 ppm O₂ response to:
3000 ppm C2H6O
3000 ppm C4H10S
< 200 ppm O₂ response to:
3000 ppm C2H6S2
< 400 ppm O₂ response to:
100 Vol.% H₂
< 500 ppm O₂ response to:
2000 ppm H₂S in N₂ 		< 20 ppm O₂ response to:
100 Vol.% CO
100 Vol.% CO₂
100 Vol.% C3H8
1000 ppm C6H6 in N₂
2000 ppm H₂S in N₂
< 20000 ppm O₂ response to:
3000 ppm NO in N₂
1000 ppm H₂ in N₂
500 ppm SO₂ in N₂

* related to Pa = 1013 hPa, Ta = 25 °C, RH = 50%, flow = 2.5 l/min
** averaged across 12 months
*** @ 100 Vol.% O₂ applied for 5 min

Gas parameters
Version Standard version H₂S resistant version
Measurement range 0 – 100 Vol.% O₂ 0.5 – 35 Vol.% O₂
Operating temperature 0 – 45 °C 0 – 50 °C
Storage temperature 5 – 30 °C recommended
-20 – 50 °C max. 1 week		 5 – 30 °C recommended
-20 – 50 °C max. 1 week
Air pressure 600 – 1250 hPa (mbar)
Ambient humidity 0 – 95% rel. humidity (not condensing)

V 1.0 / Rev. 2025-09-04 / Subject to alterations.

The most recent version of this data-sheet can be found at …
https://www.ritter.de/en/oxygen-sensor/

Dr.-Ing. RITTER Apparatebau GmbH & Co. KG · Coloniastrasse 19-23 · D-44892 Bochum · Germany
For questions please contact mailbox@ritter.de or your local distribution partner (on our overview page)