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  • ±3% / 10ppb accuracy
  • Connects up to 2 sensors
  • Analog and digital outputs
    • 4-20mA & 0-10 VDC
    • RS232, RS485 (Modbus)
    • Modbus Ethernet TCP/IP
  • Non-depleting coulometric sensor
  • 5-year coulometric sensor warranty


The Servomex MonoExact DF310E Oxygen and Moisture Analyzer is designed for various industrial gas applications such as nitrogen, argon and hydrogen production, tanker transfil, specialty gas blending and electronic gases production. Built around a non-depleting coulometric digital oxygen sensor – it offers enhanced user control and a reduced cost of ownership. It can also connect to the AquaXact 1688 Moisture Sensor for simultaneous O2 and H2O monitoring.

The DF310E has a color touchscreen with guided user interface to aid in commissioning and self-diagnostics monitoring. Updating firmware, downloading diagnostic files and copying the analyzer setup to transfer to another unit of identical configuration takes just a few clicks.