High performance Coulometric trace and percent oxygen measurements in pure and multi-gas backgrounds, designed for external location use




Sensing Technology


The DF-340E uses highly stable Coulometric sensing designed to provide measurements of trace or percent level Oin pure gas streams and multi-gas backgrounds. Designed for heated or external locations, and certified to CSA Class 1, Divison 2 and the latest ATEX specifications, the DF-340E remains stable in changing sample and flow rate conditions, making it ideal for upset prone conditions.

Suitable for outdoor installation, the DF-340E comes with NEMA 4-rated sensor enclosure options.This makes the DF-340E ideal for applications including pressure swing absorber N2skids, reactor process control, blanketing and inerting or refining/petrochemical process monitoring.

This device is also optimized to deliver a reduced cost of ownership over product life, thanks to its factory calibrated sensing technology. This simplifies set-up and reduces ongoing maintenance, with only an annual SPAN calibration required.

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  • Pressure swing absorber Nskids
  • Reactor process control
  • Blanketing and inerting
  • Oil refinery monitoring
  • Petrochemical process monitoring



Ensure your DF-340E oxygen analyzer delivers optimum performance with Servomex Service Network.

Through our global network of engineers and service centers, we provide complete lifetime support for your analyzer. Our services range from installation and commissioning to supplying high quality spares and arranging scheduled servicing: visit our Service Network pages to find out more.