In-situ gas analyzers

Already has the innovation in the cells

Your Benefits

  • Very high availability due to measurement cell with extremely long service life
  • High reliability due to innovative measurement cell protection – even in corrosive or reducing conditions
  • Reduction of analyzer failures due to internal self-monitoring
  • No manual adjustment required
  • Quick measurement close to the combustion process for timely control
  • Approved for emission monitoring
  • Easy analyzer operation – even remotely


Already has the innovation in the cells

SICK’s ZIRKOR200 gas analyzer provides very robust, reliable, and suitability-tested oxygen measurement for small and large combustion plants. The ZIRKOR200 is characterized by a measurement cell with a particularly long service life. The long-life technology employed for this purpose increases the resistance of the measurement cell in corrosive and reducing conditions in particular. The integrated measurement cell monitoring system and fully automated adjustment significantly reduce the maintenance effort. The ZIRKOR remote app allows you to wirelessly access the analyzer quickly and easily. The ZIRKOR200 provides a low-maintenance, simple oxygen measurement system for incineration optimization. Thanks to its suitability test as per EN 15267, it is also suitable for emission monitoring.

At a glance
  • Measurement cell with extremely long service life due to innovative protection mechanism
  • Measurement cell self-monitoring
  • Fully automated adjustment mechanism integrated into the control unit
  • Version for high temperatures available
  • ZIRKOR remote app for remote access to analyzer
  • Very short response time
  • Suitability-tested according to EN 15267
  • Easy connection of process control systems




Service & Support

Technical overview


Please note: The exact device specifications and performance data of the product may deviate from the information provided here, and depend on the application in which the product is being used and the relevant customer specifications.

  • ZIRKOR200 analyzer unit

    ZIRKOR200 analyzer unit

    Measured valuesO2
    Performance-tested measurandsO2
    Measurement principlesZirconium dioxide sensor
    Measuring ranges
    0 ... 25 Vol.-%
    Certified measuring ranges
    O20 ... 25 Vol.-%
    Response time (t90)
    5 s
    Depending on sample gas flow
    ± 0.2 %
    Of the measured value
    Detection limit
    O2< 1 ppm
    Process temperature
    Measuring probe≤ +600 °C
    Measuring probe with protective tube≤ +1,600 °C
    Process pressure
    –100 hPa ... 100 hPa
    Process gas velocity
    ≤ 50 m/s
    Ambient temperature
    –40 °C ... +80 °C

    EN 15267

    2000/76/EC (17. BImSchV)

    2001/80/EC (13. BImSchV)


    30. BImSchV

    TA-Luft (Prevention of Air Pollution)

    Safety integrity levelSIL 2 (IEC 61508)
    Systematic capabilitySC 2 (IEC 61508)
    Device typeType B
    Operating modeLow demand
    Electrical safetyCE
    Enclosure rating
    Immersion depth
    Measuring probe≤ 3,682 mm
    Measuring probe with protective tube≤ 1,000 mm
    Material in contact with mediaStainless steel 1.4571
    MaterialStainless steel 1.4571

    Protective tube

    LongLife cell

    LongLife² cell

  • ZIRKOR200 control unit

    ZIRKOR200 control unit

    Ambient temperature
    Instrument air version–20 °C ... +55 °C
    Pump version+20 °C ... +50 °C
    GRP housing with heating–40 °C ... +55 °C
    Storage temperature
    –40 °C ... +80 °C
    ConformitiesEN 15267
    Safety integrity levelSIL 2 (IEC 61508)
    Systematic capabilitySC 2 (IEC 61508)
    Device typeType B
    Operating modeLow demand
    Electrical safetyCE
    Enclosure rating
    Steel sheet enclosureIP66
    Stainless-steel housingIP66
    GRP housingIP66
    19″-rack enclosureIP20
    Analog outputs1 output:
    4 ... 20 mA, + 500 Ω
    Electrically isolated
    Analog inputs1 input:
    4 ... 20 mA, 120 Ω
    Not electrically isolated
    Digital outputs5 relay contacts
    Digital inputs2 relay contacts:
    + 24 V AC/DC, 1 A
    Type of fieldbus integrationRTU RS-232
    RTU RS-485
    Foundation Fieldbus
    Status LEDs: "Alarm", "Maintenance" and "Failure"

    Via LC display and membrane keyboard

    Via Android device with ZIRKOR Remote app


    Steel sheet enclosure

    Stainless-steel housing

    GRP housing


    Dimensions (W x H x D)
    Steel sheet enclosure300 mm x 440 mm x 240 mm
    Stainless-steel housing300 mm x 400 mm x 240 mm
    GRP housing510 mm x 600 mm x 310 mm
    19″-rack483 mm x 177 mm x 400 mm
    Steel sheet enclosure17 kg ... 19 kg
    Stainless-steel housing17 kg ... 19 kg
    GRP housing19 kg ... 27 kg
    19″-rack10 kg ... 11 kg
    Power supply
    Voltage104 ... 126 V / 207 ... 253 V
    Power consumption≤ 400 W

    Semi-automatic and automatic adjustment (1-point or 2-point adjustment)

    LongLife cell

    LongLife² cell

    Ejector and pump version

All technical data can be found accompanying the individual product