Even small amounts of oxygen contamination can reduce product quality, damage catalysts, increase oxidation, and compromise gas purity.

The ALPHA OMEGA INSTRUMENTS™ Series 3000™ Trace Oxygen Analyzer delivers continuous, high-accuracy oxygen measurement from below 1 ppm to 10,000 ppm, helping manufacturers monitor oxygen continuously instead of relying on delayed manual testing. Featuring a long-life electrochemical sensor, automatic ranging, configurable alarms, and optional CO₂-resistant sensing, the Series 3000 helps improve product quality, increase process reliability, and reduce maintenance costs.

What Is a Trace Oxygen Analyzer?

A trace oxygen analyzer continuously measures oxygen at very low concentrations (parts per million) to verify gas purity, monitor inert atmospheres, protect catalysts, and prevent oxidation in industrial processes.

Continuous trace oxygen monitoring allows operators to:

• Detect contamination immediately
• Improve gas quality
• Protect sensitive manufacturing processes
• Reduce manual sampling
• Improve process control
• Support quality assurance

Why Choose the Series 3000?

Long-Life Electrochemical Sensor

Designed to provide significantly longer service life than many conventional fuel-cell oxygen sensors while reducing maintenance and operating costs.

Wide Measurement Range

Measure oxygen concentrations from below 1 ppm to 10,000 ppm using single- or multi-range configurations with optional automatic range switching.

Optional CO₂-Resistant Sensor

Ideal for applications where carbon dioxide may shorten the life of conventional electrochemical oxygen sensors.

Continuous Process Monitoring

Receive immediate oxygen measurements with configurable alarms, analog outputs, and relay contacts for PLC, DCS, or SCADA integration.

Low Cost of Ownership

Factory calibration, sealed sensor design, long sensor life, and reduced maintenance requirements help lower total operating costs

Key Features

• Trace oxygen measurement from below 1 ppm to 10,000 ppm
• Long-life electrochemical sensor
• Optional CO₂-resistant sensor
• Automatic ranging (three-range models)
• 4–20 mA and 0–2 V outputs
• Three configurable oxygen alarm relays
• Audible and visual alarms
• Universal AC or 18–32 VDC power
• Factory calibrated
• Optional sample conditioning accessories
• General-purpose enclosure

Series 3000 vs. Other Oxygen Measurement Solutions

VIDEO

Series 3000 Oxygen Monitor Calibration

OXYGEN ANALYZERS RESOURCES AND MANUALS

DOWNLOAD: AOI Configurator 20251107 – Rev 5.4

• Which oxygen sensor technology is right for my application?
• Pros and Cons of Sensor Types
• Selecting Your Oxygen Analyzer
• Product Configurator & Parts List

Oxygen Monitors Resources and Manuals

Need service or calibration for your oxygen analyzer?  No problem.   We are ready to assist you with any technical or service-related inquiries.  Just complete our Oxygen Monitor RMA. 

SALES | TRAINING INQUIRIES

AMERICAS: info.americas@process-insights.com

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CHINA:  info.cn@process-insights.com

SERVICE | TECHNICAL INQUIRIES ONLY

Applications

Industrial Gas Production

Verify oxygen purity in:

• Nitrogen
• Hydrogen
• Argon
• Helium
• Specialty gases

Semiconductor Manufacturing

Monitor trace oxygen in:

• Bulk gas systems
• Specialty gas distribution
• Process tools
• Glove boxes
• Ultra-high-purity gas systems

Pharmaceutical Manufacturing

Monitor inert gas blanketing, reactor purging, and packaging operations to maintain product quality.

Food & Beverage Packaging

Measure oxygen during modified atmosphere packaging (MAP) and nitrogen blanketing to extend shelf life.

Petrochemical & Chemical Processing

Protect catalysts, monitor inerting systems, and improve reaction control.

Heat Treating & Welding

Measure oxygen in furnace atmospheres and shielding gases to reduce oxidation and improve product quality.

Research & Laboratories

Ideal for glove boxes, environmental chambers, anaerobic chambers, and laboratory gas systems.