Extractive gas analyzers

Your Benefits

  • Reliable measurement of concentration of elemental and chemically bound Hg in gases
  • Extremely low operating cost
  • Automated adjustment with test gas for high measurement certainty (optional)
  • Minimal maintenance required
  • Self-adjusting gas analyzer provides high long-term stability without the need for maintenance
  • Convenient, quick access for problem-free service and user-friendly remote diagnostics

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.


The MERCEM300Z extractive mercury gas analyzer monitors Hg emissions in flue gases with high reliability down to the smallest measuring ranges. Thanks to a range of housing variants, the MERCEM300Z is suitable for both application in climate-controlled analysis containers and outdoors under exacting ambient conditions. The complete extractive system is designed to meet national and international official requirements.

At a glance
  • Accurate measurement of “total mercury” directly in a thermal converter (patented)
  • Measuring operation without reagents
  • Practically maintenance-free gas sampling using an ejector pump – no moving parts
  • Integrated adjustment cell for automated drift checking
  • Automated adjustment of the entire measuring system with a built-in test gas generator (optional)
  • Completely modular system design


Spare parts


Service & Support

Technical overview

  • System


    Measured valuesHg
    Performance-tested measurandsHg
    Measurement principlesZeeman atomic absorption spectroscopy
    Gas flow rate
    150 l/h ... 400 l/h
    Measuring ranges
    Hg0 ... 1 ppb / 0 ... 100 ppb
    Certified measuring ranges
    Hg0 ... 10 µg/m³ / 0 ... 45 µg/m³ / 0 ... 100 µg/m³ / 0 ... 1,000 µg/m³
    Sensitivity drift
    < 3 %: within the maintenance interval, relative to measuring range full scale
    Zero point drift
    < 3 %: within the maintenance interval, relative to measuring range full scale
    Detection limit
    < 2 %: relative to measuring range end value
    Process temperature
    ≤ +1,300 °C
    Process pressure
    850 hPa ... 1,100 hPa
    Ambient temperature
    MERCEM300Z–20 °C ... +50 °C
    MERCEM300Z Indoor+5 °C ... +35 °C
    Storage temperature
    –20 °C ... +40 °C
    Ambient pressure
    850 hPa ... 1,100 hPa
    Ambient humidity
    ≤ 80 %
    Relative humidity; non-condensing

    Approved for plants requiring approval

    2001/80/EC (13. BImSchV)

    2000/76/EC (17. BImSchV)

    27. BImSchV

    TA-Luft (Prevention of Air Pollution)

    EN 15267

    EN 14181


    Electrical safetyCE
    Enclosure rating
    MERCEM300Z IndoorIP43
    Analog outputs2 outputs:
    0/4 ... 20 mA, 500 Ω
    Electrically isolated; additional outputs if using I/O modules (option)
    Digital outputs4 relay contacts:
    50 V, 4 A
    Electrically isolated; additional outputs if using I/O modules (option)
    Digital inputs4 inputs:
    24 V, 0.3 A
    Electrically isolated; additional inputs if using I/O modules (option)
    Type of fieldbus integrationTCP
    FunctionConnection to SOPAS ET software or OPC server
    LC display
    InputFunctional keys
    OperationVia LC-display or software SOPAS ET
    ModelAluminum cabinet
    Dimensions (W x H x D)
    MERCE300Z with cooling device1,038 mm x 1,744 mm x 744 mm (for details see dimensional drawings)
    MERCEM300Z Indoor806 mm x 2,156.5 mm x 605 mm (for details see dimensional drawings)
    ≤ 250 kg
    Power supply
    VoltageDepending on device version
    Power consumptionWithout integrated test gas generator: ≤ 2,100 VA
    With integrated test gas generator: ≤ 3,100 VA
    Instrument air≤ 2,500 l/h
    6 ... 7 bar; particle size max. 1 µm; oil content max. 0.1 mg/m³; pressure dew point max. –30 °C
    Test gas≤ 500 l/h
    Max. 0.5 bar; accuracy ±2%; water content 5 ... 30 vol.-%
    Sample gas connections
    Sample gas inletSwagelok 6 mm
    Auxiliary gas connections
    Test gasSwagelok 6 mm
    Instrument airSwagelok 10 mm
    Exhaust gas outletSwagelok 10 mm
    Corrective functions

    Internal adjustment cuvette

    Integrated test gas generator (option)

    Drift correction (QAL3) and check of the complete system

    Integrated components

    Integrated conditioning of instrument air (option)

    Integrated test gas generator (option)

All technical data can be found accompanying the individual product