A compact zirconium-oxide analyzer to measure percentage level (0-25%) oxygen in combustion processes. The probe is manufactured from 316 stainless steel and can handle sample temperatures up to 700°C with an insertion length of 435mm. The sample is extracted to the sensor chamber and returned to the flue via the Pitot effect, so there is no need for instrument air. The analyzer uses our microion pump sensor (MIPS) technology and operates without the need for an air reference.

Product Features

  • Measures 0 - 25% O2 in Flue Gas
  • Sample temperature up to +700°C
  • Barometric pressure and temperature sensors included
  • MODBUS as standard
  • Single or Dual 4-20 mA outputs
  • User configurable relays
  • Easy to swap sensor, requiring no special tools
  • Sensor exchange program
  • Total weight is less than 5kg

Technical Specification

Measurement technology Zirconium Oxide
Gas Oxygen
Measurement range 0.1-25%
Output resolution 0.01 V, 0.01 mA or 0.01% O2
Accuracy (0.1-25%) < 0.25% O2
Response time (T90) < 15 seconds
Repeatability < 0.25%
Sample Flow Effect ±0.5% of full scale
Sample cell temperature +700°C (1292°F)
Temperature measurement PT100
Display 16 Character, 2 Line, with backlight
Electrical Input/Output
Power supply 24 V DC, ±10% (limited power source)
Power consumption 700 mA maximum @ 24 V DC
Analog outputs Single or Dual 4-20 mA
Output ranges (oxygen)* 0-25% O2
Output ranges (temperature)* -50 - +300°C (-58 - +572°F)
Output ranges (pressure)* 260 - 1260 mbara (0.017 - 0.086psia)
Relays 1 x System alarm (SPST, N/O as standard)
1 x User configurable process alarm (SPST, N/O as standard)
Digital communications RS485 protocol
Operating Conditions
Ambient temperature -20 to +55°C (-4 to +131°F)
Ambient Relative Humidity 0-95% RH
Background gas Combustion gas from natural gas, biogas or oil
Sample gas temperature** +700°C (1292°F)
Sample pressure 260 - 1260mbar Absolute
Mechanical Specifications
Warm Up time < 90 seconds
Stabilization time < 5 minutes
Dimensions 130 x 120 x 150mm (h x w x d) excluding probe
Probe dimensions Nominally 50mm OD with 435mm insertion length
Weight: Head 1.6kg (3.5lbs)
Weight: Probe 2.9kg (Stainless steel: 435mm) (6.4lbs)
Wetted materials Stainless steel, Macor®, aluminum, platinum & PTFE
Process connection 2” 150lbs ANSI flange
Ingress protection IP65
Housing material Painted aluminium
Warning: Sensor gets hot (250°C) allow to cool and do not touch without PPE!
*Temperature and pressure are displayed on the main screen but can also be output via the MODBUS or the second mA output can be configured to either of these parameters.
**Temporary excursions up to 750°C for 30 minutes will not damage the probe.

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