Cerex FT5000 Series
Highest sensitivity monitoring for industrial continuous emissions and stack monitoring
The FT-5000 series is a collection of Cerex FTIR analyzers designed for some of the most challenging industry gas monitoring.
- Insitu and Extractive CEM
- Process Analyzers
- Ambient Air Point Analyzers
Engineered specifically for low cost, high performance monitoring of cross process applications. Capable of simultaneous monitoring of more than 350 compounds in Cerex’s FTIR library, the FT-5000 provides continuous emissions monitoring without having to extract the gas samples from the stack.
Cerex FT-5000
Cerex manufactures stock and fully custom FTIR analyzers within the FT 5000 product series. Cross stack, Probe based, and UVDOAS FTIR hybrid systems allow this line of products to monitor a wide array of compounds that would typically require multiple devices. Minimal maintenance expenses, coupled with automatic calibration cycles and continuous logging and transmission of data make the FT 5000 series perfect for your monitoring application.
Our FTIR analyzers accurately measure common combustion gases, Carbon Dioxide, Carbon Monoxide, Water Vapor, and can easily be configured to monitor over 400 other compounds. All our devices feature custom alarms, complete integration into your existing data network, and an unparalleled ease of use.
Cerex has the capability to adapt analyzers to extractive, cross-stack, and insitu scenarios, whilst safely providing data in real-time. For extractive applications, heated tube bundles are available; for cross-stack applications, transmitters and reflectors are available; for insitu applications, gas probes are available. The FT-5000 can be customized to fit your specific application needs.
Offering true part-per-billion (ppb) detection limits in an easy to operate package, the Cerex FT-5000’s air-conditioned system can reliably deliver unattended, continuous real time monitoring of ultra low ppb concentrations of individual gas species with absorption features spanning the IR spectrum from 2 to 14 microns. There are no tedious ongoing calibrations, or additional costs for sample handling, wet chemistry, carrier gas, or sorbent filters. Results are immediate, and the raw data containing all the information necessary for gas identification and quantification is always saved.
- Cross stack, Insitu Probe and Parallel Cell Models
- Operational range in ppb, ppm, and higher
- Continuous, real time monitoring of over 400 individual gas species
- 100+ USEPA HAPs
- Acids, VOCs, SVOCs
- Anesthetics / Toxics
- Output options for alarm, data, and process control are available
- Integrated Ethernet / WiFi
- PC or Smartphone Remote Control
- Automatic saved records of data
- Customizable audible, visual and email alerts
The Cerex FT 5000 analyzer is based on the widely acclaimed full spectrum Bomem MB3000 interferometer.
The Cerex FT5000 is a portable Continuous Emissions Monitor for cross stack applications. The system is based on proven FTIR and DOAS technology. The FT5000 analyzer provides real-time multi-gas qualification and quantification of gases commonly found in stack emissions. The FT5000 can also serve as a reliable alarm and easily integrates into your existing alarm system.
The Cerex FT5000 analyzer is based on the widely acclaimed full spectrum Bomem MB3000 interferometer. The MB3000 has compliance with CE and TUV.

FT5000CS
Continuous Emissions Monitor for cross stack applications
Weight 150 lbs (68kg)
Measurements 24.5″ x 18.5″ x 10″ (62cm x 47cm x 25.4cm)
Enclosure 4X – IP54, thermoelectrically cooled
Power 4A/2A @ 110/220 VAC
Operating Temperature -20°F – 104°F (-29°C – 40°C)
Optical Path Length 5m – 1000m
Options
- Integrated Controller Adds integrated data acquisition and remote management with wired or wireless ethernet.
- Analog Outputs Adds analog voltage or 4-20mA output channels. Requires integrated controller or external PC.
- Serial Outputs Adds RS-232, RS-422, or RS-485 output over a wired or wireless platform. Requires integrated controller or external PC.
- Alarm Outputs Adds switched outputs based on software programmable alarm levels. Requires integrated controller or external PC.
- Weather Monitoring Adds wind speed and direction logging.
- Advanced Weather Monitoring Adds wind speed, wind direction, 3D wind mapping, and air temperature logging.
Installation
- Packaged in an type 4X – IP54, thermoelectrically cooled, enclosure
- Suitable for corrosive environment system deployment
- Environmentally sealed
Maintenance
- Recommend quarterly inspection and possible replacement of the air intake filters if operated continuously
- A maintenance free, thermoelectrically (TE) cooled, detector is available for some applications
- Stirling cooler (detector cryocooler) guaranteed for 2 years before refurbishment is required
- IR source life time is approximately 2 years
- Fans are rated to 70,000 hours at 40°C

FT5000C / FT5000CRM
Extractive Stack and Ambient Point Analyzers
The Cerex FT5000C and FT5000CRM are multi-gas FTIR analyzers suitable for continuous emissions monitoring, process monitoring, RATA, Quad J and Quad Z compliance monitoring, and ambient air monitoring applications.
The FT5000C features a wall mount NEMA enclosure and thermo-electric air conditioning for outdoor or indoor operation. Optional hazardous location hardware allows operation in Class 1 Division 2 Groups A-D areas.
The FT5000CRM features a rack mount, air cooled enclosure suitable for installation in temperature controlled cabinets, mobile laboratories, laboratory benchtops and intermittent portable stack testing.
All models are available with heated sample cells and heated sample tube controllers for Hot and Wet operation.
Weight 150 lbs (68kg)
Measurements 24.5″ x 18.5″ x 10″ (62cm x 47cm x 25.4cm)
Enclosure 4X – IP54, thermoelectrically cooled
Power 4A/2A @ 110/220 VAC
Operating Temperature -20°F – 104°F (-29°C – 40°C)
Optical Path Length 5m – 1000m
Installation
- Packaged in an type 4X – IP54, thermoelectrically cooled, enclosure
- Suitable for corrosive environment system deployment
- Environmentally sealed
Maintenance
- Recommend quarterly inspection and possible replacement of the air intake filters if operated continuously
- A maintenance free, thermoelectrically (TE) cooled, detector is available for some applications
- Stirling cooler (detector cryocooler) guaranteed for 2 years before refurbishment is required
- IR source life time is approximately 2 years
- Fans are rated to 70,000 hours at 40°C

FT5000P
Insitu Stack and Process FTIR Analyzer
Weight 150 lbs (68kg)
Measurements 24.5″ x 18.5″ x 10″ (62cm x 47cm x 25.4cm)
Enclosure 4X – IP54, thermoelectrically cooled
Power 4A/2A @ 110/220 VAC
Operating Temperature -20°F – 104°F (-29°C – 40°C)
Optical Path Length 5m – 1000m
Installation
- Packaged in an type 4X – IP54, thermoelectrically cooled, enclosure
- Suitable for corrosive environment system deployment
- Environmentally sealed
Maintenance
- Recommend quarterly inspection and possible replacement of the air intake filters if operated continuously
- A maintenance free, thermoelectrically (TE) cooled, detector is available for some applications
- Stirling cooler (detector cryocooler) guaranteed for 2 years before refurbishment is required
- IR source life time is approximately 2 years
- Fans are rated to 70,000 hours at 40°C

How it Works
Open Path FTIR Technology
Fourier transform infrared spectroscopy (FTIR) is the preferred technique used to obtain an infrared spectrum of absorption or emission of a solid, liquid, and gas.
The FT-5000 operates by sending a beam of infrared light through a sample space. The IR beam is directed by a series of optics to an ultra-sensitive cryo-cooled MCT detector where minute changes in IR absorption are sensed due to trace concentrations of individual gases. A classical least squares regression analysis compares the measured absorption spectrum to calibrated reference absorption spectra files. Beer’s law is then used to determine gas concentrations (Beer-Lambert Law).
The result of coupling our proven detection system with our CMS real time analytic software is an industry leading FTIR multi-gas analyzer.

(Above) FT-5000 connected to a process stream.

Common Detectable Gases
Extensive Library with Options for Customization
Cerex has over 385 compounds available for detection with the FT-5000. If your compound is not one of the compounds already available within our database, the Cerex FT-5000 FTIR may import gas spectra from the numerous FTIR databases on the web (NIST, EPA, PNNL, etc.)
If you have a compound that is not available in a public database, we may be able to work with you to develop a custom spectrum. Detection limits are a function of the IR detector, installed path length, and site conditions. The detection limits shown have been empirically determined from bump tests of fielded instruments at full path-length.
It is efficient as an alarm and easily integrated into your existing alarm system.
e.
FT5000 Common Target Gases
Acetaldehyde (C2H4O) |
Acetic Acid (C2H4O2) |
Acetone (CH3COCH3) |
Acetylene (C2H2) |
Acrolein (C3H4O) |
Benzaldehyde (C7H6O) |
Butane (C4H10) |
n-Butyl (C6H12O2) |
Carbon Dioxide (CO2) |
Carbon Monoxide (CO) |
Chlorine Dioxide (ClO2) |
Ethane (C2H6) |
Ethanol (C2H6O) |
Formaldehyde (CH2O) |
Formic Acid (CH2O2) |
n-Hexane (C6H14) |
Hydrogen Bromide (HBr) |
Hydrogen Chloride (HCl) |
Hydrogen Fluoride (HF) |
Methane (CH4) |
Nitric Oxide (NO) |
Nitrogen Dioxide (N2O) |
Phenol (C6H5OH) |
Phosgene (CCl2O) |
Water Vapor (H2O) |

Software
Results You Can Rely On
Cerex recognizes that detailed gas monitoring results need to be reliable and available quickly to various stakeholders. For this reason, Cerex engineers developed software to accurately detect and display gases within the air in real time from any location.
On the FT-5000, a user can see results remotely on a phone, tablet, or computer anywhere in the world via a virtual connection. Cellular configurations make this possible in remote environments.
All data is automatically saved in an easy to access .csv file; this feature helps our clients in various ways - from daily use to crucial events such as evidence in court. Early detection translates into quicker response times, reduced environmental impact, decreased plant downtime, and reduced exposure to site personnel and the community.
Learn more about the benefits of our proprietary analysis software here.

Real time spectral subtraction and synthetic background implementation allow the Air Sentry to clearly display accurate concentrations of target gases over 1000 meters without interference from other gas species



Applications
All Applications
Mobile Laboratory Monitoring
Indoor air quality monitoring
Insitu Continuous Emissions Monitoring (CEMs)
Insitu Process Monitoring
Insitu Tailgas
Insitu Ammonia Slip
Insitu DeNOx/SCR and DeSOx/FGD
Zone Monitoring
All Applications
USEPA Method 318: Extractive FTIR Method for Measurement of Emissions from Mineral Wool and Wool Fiberglass Industries
USEPA Performance Specification 15 for Extractive FTIR CEMS in Stationary Sources
USEPA Method 320: Vapor Phase Organic and Inorganic Emissions by FTIR
USEPA Method 321: Determination of HCl for Portland Cement Industries
NIOSH Method 3800 : Organic and Inorganic Gases by Extractive FTIR Spectrometry
ASTM Method D6348-03: Determination of Gaseous Compounds by Extractive Direct Interface Fourier Transform Infrared Spectroscopy
Overview
Cerex’s FT-5000 is an FTIR continuous multi-gas analyzer, engineered specifically for low cost, high performance monitoring of cross process applications. Capable of simultaneous monitoring of more than 350 compounds in Cerex's FTIR library, the FT-5000 provides continuous emissions monitoring without having to extract the gas samples from the stack.
Cerex has the capability to adapt analyzers to extractive, cross-stack, and insitu scenarios, whilst safely providing data in real-time. For extractive applications, heated tube bundles are available; for cross-stack applications, transmitters and reflectors are available; for insitu applications, gas probes are available. The FT-5000 can be customized to fit your specific application needs.
Offering true part-per-billion (ppb) detection limits in an easy to operate package, the Cerex FT-5000's air-conditioned system can reliably deliver unattended, continuous real time monitoring of ultra low ppb concentrations of individual gas species with absorption features spanning the IR spectrum from 2 to 14 microns. There are no tedious ongoing calibrations, or additional costs for sample handling, wet chemistry, carrier gas, or sorbent filters. Results are immediate, and the raw data containing all the information necessary for gas identification and quantification is always saved.
How it Works - FTIR
Fourier transform infrared spectroscopy (FTIR) is the preferred technique used to obtain an infrared spectrum of absorption or emission of a solid, liquid, and gas.
The FT-5000 operates by sending a beam of infrared light through a 20 meter sealed sample cell within the instrument. The IR beam is directed by a series of optics to an ultra-sensitive cryo-cooled MCT detector where minute changes in IR absorption are sensed due to trace concentrations of individual gases. A classical least squares regression analysis compares the measured absorption spectrum to calibrated reference absorption spectra files. Beer’s law is then used to determine gas concentrations (Beer-Lambert Law).
The result of coupling our proven detection system with a 20 meter internal optical sample path and CMS real time analytic software is an industry leading FTIR multi-gas analyzer.
Cerex's FT-5000 analyzers feature:
- Cross stack, Insitu Probe and Parallel Cell Models
- Operational range in ppb, ppm, and higher
- Continuous, real time monitoring of over 400 individual gas species
- 100+ USEPA HAPs
- Acids, VOCs, SVOCs
- Anesthetics / Toxics
- Output options for alarm, data, and process control are available
- Integrated Ethernet / WiFi
- PC or Smartphone Remote Control
- Automatic saved records of data
- Customizable audible, visual and email alerts
The Cerex FT 5000 analyzer is based on the widely acclaimed full spectrum Bomem MB3000 interferometer.
All FT-5000 analyzers come standard in a ...
FT-5000 Model
Extensive Library with Options for Customization
Cerex has over 385 standard compounds available for detection with the FT-5000. In addition to our standard library, thousands of additional compounds are available for detection by the FT-5000.
If you have a compound that is not available in a public database, we may be able to work with you to develop a custom spectrum. Detection limits are a function of the IR detector, installed path length, and site conditions. The detection limits shown have been empirically determined from bump tests of fielded instruments at full path-length.