Oxygen Monitors

Oxygen monitors for surveillance of combustion processes

The OPSIS oxygen monitor is developed to monitor oxygen concentrations in flue gases after combustion and in other industrial processes, for example inert gas generators. It is based on proven technology and complements OPSIS DOAS and TDL instruments well. The simple but reliable design makes it very competitive.


The OPSIS oxygen monitor of the O2000N type is based on the simple and well-proven zirconium dioxide technology. The monitor is designed to withstand high temperatures, high dust levels, and high moisture levels. The oxygen sensor is placed on the tip of a probe that is inserted into the flue gas duct. There is therefore no risk of the monitoring result being affected within an extractive collection system.

The sensor in the O2000N is a so-called broadband zirconium dioxide sensor. It provides excellent monitoring performance. The oxygen monitor has hardware and built-in routines for calibration that can be activated either manually or automatically. The monitoring results are reported in real time, both via traditional analog current signal and via Modbus protocol, where the latter also gives access to extra monitoring possibilities. The oxygen monitor is a good tool for controlling combustion processes, but it also works excellently for plain emissions monitoring. In the latter case, it is commonly used to be able to recalculate other monitored gas concentrations to another, standardized oxygen concentration.


An O2000N includes a probe (M502) with a zirconium dioxide sensor and a unit with a reference air pump, control electronics, and a microprocessor for oxygen calculation, monitoring, and communication.

The probe is available in different lengths so that the tip can be positioned at the desired location in the gas channel. It is also available in customized designs for particularly high temperatures and high dust levels. The distance between probe and control unit can be up to 100 m, which gives great flexibility in the choice of installation locations.


OPSIS oxygen monitor has been tested and approved by German TÜV and under British MCERTS standards.


On our blog you can read more about our products and what they are used for, for example:

Operating Principle of an Oxygen Monitor 

Gas Concentration Monitoring in the Industry 

What is the difference between a gas analyser and a gas monitor? 


MCERTS Certificate Oxygen (O2000N)

MCERTS Certificate Oxygen (O2000)

TÜV Certificate Oxygen (O2000N)

TÜV Certificate Oxygen (O2000)

Contact Christian M OPSIS 720X480pxl

Contact me if you want to know more about our oxygen monitor!