Continuous emission monitoring system - CEMS

The Continuous Emissions Monitoring System (CEMS) is used to measure in real time the emissions of gaseous pollutants from an industrial boiler, cogeneration, power or thermal plant. The CEMS is used to monitor and control compliance with environmental regulations, to monitor plant performance and to provide data for maintenance planning.

Continuous Emission Monitoring System CEMS

cems continuous emission gas analysis system

Long term superior stability continuous emission monitoring systems

Simultaneous measurement of up to 14 components in flue gas. The Fuji CEMS Continuous Emissions Monitoring System allows the continuous monitoring of gas emissions in flue gases from natural gas, fuel, coal, industrial processes, urban waste combustion, or waste incineration, such as:

CO - CO2 - NOX - N2O - NH3 - HCI - CH4 - O2 - H2O

Features of the continuous emission analysis system

for boilers, engines and gas turbines

For boilers, motors & gas turbines at power stations:

  • CE-marked systems
  • QAL1 certified (TÜV / MCERTS) system compliance
  • QAL2 system compliance
  • QAL3 automatic system
  • Single beam or Dual beam NDIR high technology gas analysers
  • Multiplexed sampling system
  • Simple installation and maintenance
  • Immediately compatible with Fuji DAHS system
  • Fuji FBOX remote control & maintenance system

Principle of the Continuous Emissions Monitoring System

Principle of the Continuous Emissions Monitoring System

CEM Continuous Emission Monitoring Systems consist of one or several highest performance NDIR gas analyzers, one oxygen analyzer and specially designed and top-quality level sample probe and gas conditioning system. The continuous emissions monitoring systems are designed and continuously upgraded with the lasted technologies in order to comply with stringent European and local environmental regulations.

FUJI Electric France Continuous Emissions Monitoring System is a gas analysis equipment that is QAL1 certified by TÜV according to standards EN 14181, EN ISO 14956 and EN 15267.

Fuji Electric France CEMS include

  • A sampling probe heated to 180°C
  • A sample line heated to 180°C
  • A high-performance gas conditioning system
  • A high-performance No/No2 converter for NOx measurement
  • High-performance QAL1-certified multigas analysers

Also available as an option:

Diagram of the Continuous Emissions Monitoring System

Diagram of the Continuous Emissions Monitoring System

CEMS General features

Measurable components

The analysis system can measure a multitude of components, including CO, CO₂, NOx, N₂O, SO₂, NH₃, HCl, CH₄, O₂, H₂O, in addition to pressure, temperature, flow rate/speed, and dust content.

Innovative measurement principles

Measurement principles vary depending on the components. For CO, CO₂, NOx, N₂O, SO₂, CH₄, non-dispersive infrared (NDIR) is used. O₂ is measured using zirconia, paramagnetic or electrochemical technology, while NH₃, HCl, H₂O are measured by laser. Dust is quantified by LED optical scattering.
Flow measurement is performed by Microventuri, but other methods can be used as options. Pressure is measured by a capacitive sensor, and temperature measurement is provided by a PT100 probe.

Speed and reliability

Response time is impressive, with less than 200 seconds for NDIR technologies and less than 5 seconds for the laser. This guarantees rapid detection of changes in the atmosphere.

Intuitive user interface

Equipped with a 10″ touchscreen, the system uses the Fuji CEMS Manager v7 software module, offering an intuitive user interface for monitoring and managing data.

Advanced Connectivity and Extended Options

The system features standard Modbus® TCP/IP connectivity, with options such as 4-20 mA, Profibus, Modbus® RTU, Internet/GSM (FBOX). Outputs and contact inputs allow extensive customization of alarms and functions.

Advanced features

Options include automatic calibration, automatic blowback, and automatic QAL3 in combination with the Fuji ACE DataQAL3 software module. The system can also multisample up to 8 stacks, offering remarkable flexibility.

Complete Sampling System

The sampling system includes a sampling probe, heated line, filters, coolers and pumps tailored to the customer's application, ensuring accurate, reliable measurements under a wide range of conditions.

Calibration Gas

Calibration gases, supplied locally, are carefully selected. Zero calibration uses clean, dry nitrogen or air, while scale calibration involves a mixture of 90% of each measured component in N₂. For zirconium oxide, specific mixtures of O₂ in N₂ are used.

Versatile power supply

Fuji's CEMS is compatible with 100, 110, 115, 200 or 230 Vac, 50/60 Hz power supplies, guaranteeing adaptability to different electrical configurations.

Reliability and Compliance Made Easy

With dimensions suitable for indoor installation, the system cabinet measures 600 (W) x 800 (D) x 1800 (H). The complete sampling system, including sampling probes, heated lines, filters, coolers and pumps, guarantees consistent reliability and compliance.

CEMS Specific performance

CEMS Specific performance

Advanced Technology for Precise Measurement

The Fuji Electric CEMS operates with two models ofanalysers : the gas analyser ZRE with single-beam NDIR and the gas analyzer ZKJ with double-beam NDIR. These two analysers cover a wide range of gases and parameters.

The measurement scales ofanalyser gas ZRE include :

For the ZKJ analyser , the measurement scales are as follows:

For other measurement scales, both analysers offer the same performance:

Exceptional performance and assured precision

Exceptional repeatability is maintained at ≤ ± 0.5% FS for NDIR and ZrO2, and ≤ ± 1% FS for the laser.

Linearity remains consistently ≤ ± 1% FS, guaranteeing reliable and accurate measurements.

Zero drift depends on the chosen analyser.
For the ZRE analyser, it is limited to ≤ ± 2% FS per week for NDIR, ≤ ± 2% FS per month (ZrO₂) and ≤ ± 1% FS per week for laser.
For the ZKJ analyser, scale drift remains below ≤ ± 1 % PE per week for NDIR, ≤ ± 2 % PE per month ZrO₂ and ≤ ± 2 % PE every 6 months for the laser.

Reliability and Durability

Performance stability is maintained with a scale drift of ≤ ± 2% PE per week (NDIR), at ≤ ± 2% PE per month (ZrO₂) and at ≤ ± 2% PE every 6 months (laser) for both analysers.

Discover the continuous emission monitoring system CEMS

Our CEMS system revolutionizes the control of pollutant gas emissions with real-time monitoring!