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Optical O2 Analyzer(ATEX / IECEx)

2026-06-16      3201

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Optical O2 Analyzer(ATEX / IECEx)

Description

The Optical oxygen analyzer is cost-effective and suitable for stable and continuous measurement of the percentage oxygen content of most gases.

This principle is very robust. It shows virtually no interferences to other gases (except Cl2 and NO2), has a very low drift, and the sensor is fully solid-state. It does not deplete over time, unlike galvanic oxygen sensors with their limited shelf life. Optics and electronics are hermetically sealed from the measured gas. For typical indoor environmental conditions, an operating life of more than 5 years is expected.


Principle

This optical technology is based on a highly oxygen-sensitive luminescent indicator material with excellent brightness. The measurement principle relies on luminescence quenching: oxygen molecules collide with the indicator immobilized on the sensor tip or surface, resulting in a reduction of emission intensity that depends on oxygen concentration. The indicator can be excited by visible light in the longer-wavelength range and exhibits oxygen-dependent luminescence in the near-infrared region.


luminescence quenching Principle

This optical sensing approach is characterized by high precision, high reliability, low power consumption, minimal cross-sensitivity, and fast response times. The oxygen-sensitive indicator exhibits significantly higher luminescence brightness compared to competing products that use shorter-wavelength excitation. Therefore, the duration of excitation for a single oxygen measurement could be decreased from typically 100 ms to now typically 10 ms, significantly reducing the light dose applied to the measurement system. In addition, due to the excellent luminescence efficiency of the indicator, the sensing matrix can be fabricated much thinner, enabling faster response times of the oxygen sensors.


luminescence quenching Principle Principle

The measuring principle is based on a sinusoidally modulated excitation light. This results in a phase-shifted sinusoidally modulated emission in the NIR. Optical oxygen analyzer measures this phase shift. The phase shift is then converted into oxygen units based on the Stern-Vollmer-Theory.



Application

Reactor/Centrifuge

Chemicals/Biopharmaceuticals industry

Pharmaceuticals industry

Fine chemicals industry

Exhaust gas measurement

Inert gas processing chambers (glove boxes)

Metal heat treatment/welding

Monitoring fruit ripening and transport

Oxygen concentrators

▲ASU(Air separation uint)

▲Fertilizer, Chemical, Pharmaceutical industry

▲Petroleum and Petrochemical industry

▲Semiconductor industry

▲Metallurgical iron and steel industry

▲Nuclear,heat treatment, welding protection

▲Aerospace and defense

▲Biological research

▲Light bulb manufacturing, semiconductor

▲Optical fiber research

▲Inert gas generator

▲Glass manufacturing

▲Special gas

▲Laboratory

▲Flare monitoring

▲Extraction and processing of natural gas

▲Environmental area monitoring

▲Anesthesia, breathing and prenatal care


Advantage

★High-accuracy measurement

★Low drift

★Rugged and durable design

★Long life

★Fast response (t63<2s)

★Temperature compensation

★MZD BaroSense™ Technology

MZD BaroSense™ Technology continuously monitors atmospheric pressure and automatically converts oxygen partial pressure into true volumetric concentration, ensuring highly accurate oxygen measurements under changing environmental conditions.

Without atmospheric pressure compensation, a 1% change in barometric pressure results in approximately a 1% measurement error. Daily atmospheric pressure fluctuations typically range from 2–3%, increasing to 5–7% during severe weather and exceeding 11% under extreme conditions. By automatically compensating for these variations in real time, MZD BaroSense™ Technology delivers stable, reliable measurements while minimizing the need for frequent recalibration.


★Stainless steel sintered filtration (membrane filtration optional)


Features

• Quick and convenient

    The English navigation menu can be operated easily.

• Process safety

    1.8" color LCD screen, magnetic button operation and debugging

    LED alarm, clearly visible from long distances and in dark areas

    Alarm immediately, safe the process

• Powerful self-diagnosis function

    Built-in heartbeat monitoring function and watchdog

    Monitor the status of transmitter and sensors, and promptly remind customers to take necessary maintenance

    High-standard hardware and software security and password protection

• ATEX / IECEx Exd II CT4  Optional


Measurement components and ranges

• O2:         0 ~ 100%



Product datasheet: O2 Analyzer(Optical) , if you need more information, please contact us at sales@mzdd.de.



Glove boxes, oxygen analyzer, Welding and soldering, Semiconductor, Heat and surface treatment,Combustion plants, porcelain and ceramic firing, Vacuum process control, industrial plasma processes, Test gas generator for laboratory equipment, Reactor, Centrifuge, Chemicals, Biopharmaceuticals,  Pharmaceuticals, Fine chemicals industry



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