Continuous Emissions Monitoring Analyser

Continuous Emissions Monitoring FTIR

atmosFIR CEM

atmosFIR CEM is a complete emissions monitoring system incorporating the atmosFIR 19” FTIR analyser. As completely hot and wet emissions measurement, atmosFIR CEM is ideal for complete measurement of multiple gases from applications such as incineration and power. A standard gas suite of NO, NO2, N2O, SO2, NH3, HCl, CH4, O2, CO2 and H2O is provided, but with the powerful FTIR analyser, further gases can be added easily in software.

At the heart of system is the high-resolution, robust and proven FTIR spectrometer offering high signal throughput, low-noise and long lifetime of components. atmosFIR has been developed to incorporate the latest improvements and advantages in technology, The atmosFIR FTIR analyser contains an in-built sampling system and is designed for ppm-level emissions monitoring. The analyser can be used as a portable or bench-top unit as well as part of the installed CEM system.

For emissions applications, atmosFIR CEM contains complete management of the heated sampling system from within the system – heated lines, probes – as well as comprehensive span gas options, including 6 span valves that can be used to calibration the analyser directly or "to probe".

Protea’s PAS-Pro operating software not only collects and analyses the infrared spectra with the latest in analytical algorithms (with no limit on the number of gases that can be measured) but also manages the complete automation of the system. Modbus Serial, Modbus TCP/IP and OPC Server data exchange is provided as standard, and the monitoring results are reported both Raw and Corrected in real-time.

atmosFIR CEM is a complete multigas analyser system using FTIR technology:

  • Waste Incineration Emissions monitoring
  • Combustion emissions from oil and gas
  • Core FTIR module available for integration
  • Meets the requirements of EN 15267-3, QAL1 and EN14181. Certification due Q2 2017
Download atmosFIR CEM Brochure
FTIR Specifications
Double-pivot interferometer with increased robustness. Permanently aligned optics, giving repeatable measurements and high light throughput. The scanning mechanism has a lifetime guarantee
Resolution 1cm-1,2cm-1, 4cm-1, 8cm-1 variable resolutions. 1cm-1 for standard emissions monitoring
Optics: Zinc Selenide beamsplitter (non-hygroscopic)
Spectral Range: 485 - 8500cm-1
Reference laser: Solid state laser (no scheduled maintenance required). Long lifespan (10 years) compared with HeNe laser
Source: Mid-IR source, with electronic stabilization for long lifespan
Detector: DTGS with signal sampling at 24-bit ADC
Sample Cell: Materials: Ni-coated Al cell. Proprietary alloy mirror substrate with multi-layer coating.
Volume: 300ml
Pathlength: 4.2m standard pathlength
Temperature: 180°C
FTIR Sampling system: Heated pre-cell filter for extra protection against dust
Zirconia oxygen sensor for parallel O2 measurement
Automated Nitrogen Purge Valve
atmosFIR CEM Sampling Specifications
Sampling Rate: 2.5lpm, controlled via with venturi orifice
Sample Control: Heated eductor post-FTIR
Sample Line: 4/6mm PTFE core heated to 180°C. Sample line temperature alarm
Sample Probe: 2um PTFE filter heated to 180°C. Sample probe temperature alarm
Span Gases: 6 span gas valves, assignable to various gases and concentration levels
Span Gas Delivery: Direct to analyser to Span to Probe selectable
Installation and Utilities
Cabinet: 1900(h) x 600(w) x 800(d) plus 100mm plinth for installation
Weight: 250kg
Supply and Power Consumption: 1 x 13A for cabinet. Probe powered locally at stack
2.5kW (including 10m heated line and sample probe
Ambient Temperature: 5°C < T < 30°C without air conditioner on cabinet
Gas Utilities: Instrument Air @ 4 bar g for eductor. Dry, oil and particle free
99.999% N2 @ 0.5 bar g for instrument zero gas. Automatic zero every 24 hours
Span gases @ 1 bar g for system checking
atmosFIR CEM can be provided with core atmosFIR FTIR gas analyser set-up for any number of different process or emissions applications.
Contact Protea for specific gas analysis requirements.
The standard incineration emissions application includes the following gases and ranges.
Typical Response Time: 120secs at 1cm-1 resolution. (T90)
Linearity <2% range Repeatability (Ó) <1% range Temperature Drift <2% range per 10K
Standard Combustion Emissions Model
Component Ranges / mg / m3 Lower Detection Limit
(LDL) / mg / m3
Component Ranges / mg / m3 Lower Detection Limit
(LDL) / mg / m3
CO 0.75; 0-1000 0.6 CH4 (Methane) 0-50; 0-1000 0.1
NO 0-200; 0-600; 1.0 C2H6 (Ethane) 0-50;0-1000 0.1
NO2 0-200; 0-600; 0.6 C3H8 0-50; 0-1000; 0.8
N2O 0-50; 0-400 0.4 C2H4 (Ethene) 0-50; 0-1000 0.4
SO2 0-75; 0-1000 0.6 HCHO (Formaldehyde) 0-20; 0-100 0.2
NH3 0-15; 0-50 0.1 TOC (Indication only) 0-50; 0-1000 -
HCI 0-15; 0-100 0.2 H2O 0-40% 0.02%
HF 0-15; 0-50 0.2 CO2 0-20% 0.005%
EMC: EN61326-1: 2013 Electrical equipment for measurement, control and laboratory use – EMC requirements - Part 1
General requirements:
IEC 61010-1 and EN 61010-1 Safety requirements for electrical equipment for measurement, control, and laboratory use – Part 1: general requirements
MCERTS/TUV: Compliant with requirements of EN 15267-3. Certification pending Q2 2017
US EPA: Compliant with U.S. EPA 40 CFR Part 60

Protea Enquiries

Contact Protea to discuss how we can help you with your specific monitoring application and all other enquiries. We would love to hear from you and will respond as soon as we can.