Products > Microx-OL Oxygen Analyzer


The Microx is a compact and robust oxygen analyser that utilises zirconia or electrochemical technology to give a reliable measurement of oxygen concentration. The zirconia sensor offers fast response time and a long service life with virtually no drift, whilst the electrochemical sensor allows measurement in background gases containing hydrocarbons.

The minimum output range of 0 to 10ppm is ideal for nitrogen generation or glove box monitoring. The Microx analyser can also be supplied with measuring ranges up to 0 to 96% O2 for oxygen concentrators. The flexibiliy is further enhanced by different mounting options and multiple sensor types.

  • Zirconia or electrochemical sensor technology options
  • 0-1000ppm, 0-10,000ppm, 0 to 25%, 0 to 96% O2
  • M16 Threaded connection, flowthrough housing, flowthrough with orifice, Drellum T-piece connection options
  • Din rail / Panel / Wall mounting options
  • 3 configurable alarm relays
  • RS 232 modbus protocol
  • LCD + 4 button HMI

More details


Technical Specifications
Measurement Technology Zirconia (ZR) Electrochemical (EC)
Measurement Range 0 to 1,000ppm / 0 to 10,000ppm /
0 to 25% / 0 to 96%
0 to 1,000ppm / 0 to 25% / 0 to 96%
Output resolution ( for %) 0.01%
Output resolution (for ppm) 1ppm
Accuracy +/-2% of reading (or 2ppm O2) @ calibrated temperature and pressure
Response time (T90) <10 seconds @ 25˚C (within selected range)
LDL (Sensitivity) 0.01% (when measuring %) / 1ppm (when measuring ppm)
Temperature range -20˚C to +50˚C 0˚C to +45˚C
Pressure range 900 to 1100 mBarabs
Linearity 1% of range
Life expectation 3-5 years 1 year
Humidity 0-95% RH non-condensing
Shelf life No shelf life Up to 6 months
Electrical Input / Output
Power supply 24VDC ±10% / (230VAC Panel & Wall mounted options only)
Power consumption Maximum 160mA @ 24VDC
Signal output 4-20mA Output Linear & Logarithmic (User Configurable)
Digital communications RS232 bi-directional Modbus protocol.
Digital output options 3 off relay, dry contact 5 Amp rated
Display format % O2 / ppm O2
Display 100 x 33 dot graphics display module
Mechanical Specifications
Dimensions Din Rail: 86mm (h) x 69mm (w) x 58mm (d)
Wall Mount: 45mm (h) x 110mm (w) x 93mm (d)
Panel mount: 96mm (h) x 96mm (w) x 83mm (d)
Weight <0.180kg
Wetted materials Aluminium, PTFE, Viton
Process connection M16 Threaded connection / Flowthrough Housing / Flowthrough with orifice / Drellum T Piece
Mounting Din Rail (M36) / Panel / Wall
Ingress protection IP20
Housing material ABS
Certification Complies with EMC Directive 2004 / 108 / EC. UL/ETL Certification Number: UL-61010-1