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AII Oxygen Analyzers

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Ensuring Quality and Safety

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Our oxygen analyzers are designed to deliver best-in-class reliability and simplicity in demanding industrial environments. They are available in both fixed installations and portable models for convenient spot-checking of processes.

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Gas Purity (Trace O2)

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In industries like air separation plants, electronics, and food & beverage, it's crucial to safeguard processes and products from atmospheric oxygen, which can act as an unwanted contaminant. Our analyzers offer ultra-low detection capabilities, measuring trace amounts of oxygen in parts per billion (ppb).

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Oxygen Purity

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Annually, more than 100 million tonnes of oxygen are extracted from the air for industrial purposes, with the steel industry consuming over half of this supply. The rest supports sectors such as chemical manufacturing, healthcare, metalworking, aerospace, and water treatment. Our analyzers are capable of measuring oxygen purity levels as high as 95-100%, ensuring quality control both during manufacturing and at the point of use.

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Features:

  • Multiple measurement ranges for better process control

  • Long life sensor cells optimised for desired operating range

  • Designed for simple and cost-effective maintenance

  • Easy to use HMI is common to all models

OEM Oxygen Analyzers

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GPR-1900 and GPR-2900
 

  • Wide variety of measurement ranges from 0...10 ppmV to 0…100 %

  • Temperature compensation

  • Two user-configurable alarms

  • * Range ID output

  • Sensor options for carbon dioxide backgrounds

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GPR-1500 GB/2500 GB
 

  • Measurement ranges from 0-10ppm up to 0-25% O2

  • Accuracy of better than 2% of range

  • 24 months sensor life span (in normal use)

  • 4-20 mA output

  • 18-24V loop powered

  • XLT sensor options for CO2Â backgrounds

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GPR-1500
 

  • Wide variety of measurement ranges from 0...10 ppm to 0…1 %

  • Sensor options for measurement in helium, carbon dioxide or hydrogen gases

  • Hazardous area-rated for key global markets

  • Gas temperature compensation

  • Loop-powered configurations available

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GPR-2500
 

  • Wide variety of measurement ranges from 0...1 % to 0…25 %

  • Sensor options for measurement in helium, carbon dioxide or hydrogen gases

  • Hazardous area-rated for key global markets

  • Gas temperature compensation

  • Loop-powered configurations available

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Hazardous Area & SIL Capable Oxygen Analyzers

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Trace and Ambient Oxygen Analyzers - GPR-1800 (A)IS and GPR-2800 (A)IS
 

  • User selectable measurement ranges from 0...10 ppmV to 0...1 %

  • Hazardous area-rated for key global markets

  • Sensor options for inert, acidic or H2/He gases

  • GPR-1800 IS – 2 wire loop powered Transmitter

  • GPR-1800 AIS – line powered Analyzer

    • Two user-configurable alarms

    • Analog and digital output signals

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Process Oxygen Analyzer for Hazardous Areas - AII GPR-2800 IS/2800 AIS
 

  • Hazardous area rated for key global markets; including ATEX, IECEx, cMETus, UKEx

  • Four measurement ranges from 0 to 25% O2

  • Measure O2 in inert, hydrocarbon gas streams, mixed acidic gases or hydrogen and helium with different sensors

  • Range of sampling options available

  • Sensor life of up to 60 months

  • Simple, intuitive HMI for operation

  • Easy to integrate with loop powered or line powered analyzer with alarm set points and signal retransmission

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Explosion-proof Oxygen Analyzers - GPR-18 MS, GPR-18, GPR-28
 

  • Range of analyzers for PPB / PPM / 0-25% measurement ranges

  • Field proven electro-chemical sensor performance 

  • Wide range of process applications possible with 3 sensor variations for different gas compositions  

  • Easy integration, installation, operation and maintenance of analyzers with long sensor life and analyzer design

  • Hazardous area rated for key global markets; including ATEX, IECEx, UKEx

Oxygen Analyzers for Process, Industrial & Fail-Safe Applications

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AII GPR 1600/2600/3100 Oxygen Analyzers for Industrial Gas
 

  • High accuracy ( ±0.02 ppm in lowest range)

  • 24 months sensor life with normal usage

  • Sample in CO2Â backgrounds with XLT sensor

  • Four measurement ranges with manual or auto-ranging

  • Two Alarms and range indication output

  • Bench, rack or wall mounting options

  • Integrated bypass valve (for GPR-1600)

  • Easy access and sensor replacement

  • Simple to use HMI

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Percent Oxygen Analyzer - GPR-2500

  • Wide variety of measurement ranges from 0...1 % to 0…25 %

  • Sensor options for measurement in helium, carbon dioxide or hydrogen gases

  • Hazardous area-rated for key global markets

  • Gas temperature compensation

  • Loop-powered configurations available

Trace and Purity Oxygen Analyzers

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AII GPR 1600/2600/3100 Oxygen Analyzers for Industrial Gas
 

  • High accuracy ( ±0.02 ppm in lowest range)

  • 24 months sensor life with normal usage

  • Sample in CO2Â backgrounds with XLT sensor

  • Four measurement ranges with manual or auto-ranging

  • Two Alarms and range indication output

  • Bench, rack or wall mounting options

  • Integrated bypass valve (for GPR-1600)

  • Easy access and sensor replacement

  • Simple to use HMI

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O2 Analyzers for UHP Gases - AII PI2-UHP 50/100 & MS 500/1000
 

  • Trace oxygen measurement ranges: 0...500, 0...1000 ppb 0...1, 0...10, 0...100, 0...1000 ppm

  • Bench/portable, wall or panel mounting options

  • Fast recovery from upset conditions

  • Long sensor-life and low cost of ownership

  • Sensor bypass /isolation

  • Easy calibration and sensor verification replacement

Portable Oxygen Analyzers

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Portable Oxygen Analyzers - GPR-1100 and GPR-2000
 

  • Wide variety of measurement ranges from 0…10 ppmV to 0…100 %

  • 0…1 V output

  • Up to 30 days battery life

  • Integrated measurement data logging

  • Safe or Hazardous Area options

  • Sensor options for different background gases

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Portable Oxygen Analyzers - GPR-1200 and GPR-3500
 

  • Wide variety of measurement ranges from 0…10 ppmV to 0…25 %

  • 0…1 V output

  • Up to 30 days battery life

  • Integrated measurement data logging

  • Safe or Hazardous Area options

  • Sensor options for different background gases

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