MICHELL XZR400 Series Oxygen Analyzers

As a member of Process Sensing Technologies (PST) we also offer products and solutions from Michell Instruments.

A range of trace oxygen analyzers utilizing Michell's Metallic Sealed Reference Sensor (MSRS) technology. Designed to measure O2 as an impurity in pure inert gases such as N2, CO2, He, Ar and Kr. The XZR400 can also be used for cylinder filling and other applications where a precise measurement of oxygen is required. There are 4 different chassis to choose from and various internal options including pumps, flow alarms and digital communications to match customer needs.      

Product features

  • Fast response time
  • Simple and easy operation
  • Low maintenance and cost of ownership
  • No need for reference air
  • Barometric pressure compensation
  • Multiple Outputs available from 4-20 mA, RS485 Modbus RTU and RS232
  • Rack, wall-mount, bench-mount, and transportable versions available
  • Optional built-in Easidew Transmitter with rack-mount version


  • Gas quality measurements
  • Environmental control applications
  • Control of pure gas for semiconductor and nuclear industries
  • Control of gas purity for industrial gas manufacturers
  • Tracing leaks in glove boxes
  • Measuring oxygen traces in Carbon Dioxide for breweries

Want to learn more about our products?
We will be pleased to personally advise you.

+1 631 427-3898

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