Portable FTIR Gas Analyser

Portable FTIR Gas Analyser

atmosFIRt multigas analyser for emissions monitoring

atmosFIRt is the latest generation of FTIR gas analyser technology from Protea in a portable or mobile form. The atmosFIR system improves upon previous FTIR technology and represents one of the most cost-effective and flexible analytical products on the market today. At the heart of atmosFIR is a 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, including:

Download atmosFIRt Brochure
  • Low cost of ownership
  • Low maintenance cost
  • Robust and light, including the latest in fabrication materials
  • atmosFIRt is provided in a rugged transportable case for mobile site measurements

These advantages come with the benefit of improved performance over existing products, due to the new small, robust, high resolution interferometer with low noise measurement. atmosFIR is fitted with a sensitive DTGS detector, operating at ambient temperature without need for liquid nitrogen or other cooled detectors. Protea continues to offer our powerful PAS software suite, training and support, so that the user is able to achieve the best performance out of the product.


Portable FTIR

atmosFIRt takes the standard 19" rack form of the atmosFIR multigas analyser and provides it in a field-ready portable form. The outer case is a high-IP rated shell providing robust housing for transportation and use on the most demanding of site installations. None of the features of the cabinet version of the atmosFIR have been lost:

Highest Resolution Portable FTIR

Normally portable FTIR equipment suffers from low resolution measurement. The atmosFIR FTIR allows however allows for resolution up to 0.7cm-1 (unapodized) allowing for detailed detection and speciation of gas species.

With mobile FTIR equipment, site work often involves the investigation and understanding of emissions or process vents. With atmosFIRt the ability to measure complex mixtures down to low concentrations is available with the high resolution option.

However the real benefit of atmosFIRt is that it is variable resolution! So if there is need for measuring at 4cm-1 or 8cm-1 resolution, the atmosFIRt can be set to this resolution with a simple setting in software. No hardware changes are needed.

Hardware Specifications for the atmosFIRt
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 typical resolutions, variable on application : 0.5cm-1 available as special
Optics Zinc Selenide beam splitter (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. 6m available as special
Temperature: 180°C standard for combustion emissions. Variable on application.
On-board Sampling system: Heated pre-cell filter for extra protection against dust
Zirconia oxygen sensor for parallel O2 measurement
Automated Zero Purge valve, with flow control
Mass Flow Control for dilution and/or analyte spiking
No need for separate pre-analyser sample conditioning box
Alarm Relays
Sample Signal Output
4-20mA outputs (optional)
Weight: 21kg, depending on options
Supply: 100 - 250 V / 50-60 Hz
Consumption: 250W
Typical Measurements for atmosFIR
atmosFIR runs a Standard Analysis Model with fixed acquisition parameters and chemometric analysis for common emission gases. This makes it incredibly simple to use even for users with no extensive FTIR background. Further analysis methods can be uploaded by the trained user or remotely by Protea
Typical detection limit <0.2ppm (gas dependent)
Typical Response Time 120secs at 1cm-1 resolution. (T90, gas dependent)
Short-term drift < 2% range
Ambient temperature drift: < 5% range
Linearity (lack-of-fit): < 2% range Repeatability < 1% range
Standard Application Model for common emission gases
Hardcoded analysis, no complex set-up required Switch on > Zero > Measure > Report
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 (Propane) 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 -
HCl 0-15; 0-100 0.2 H2O 0-40% 0.02%
HF 0-15; 0-50 0.2 CO2 0-20% 0.005%
Unlimited measurements Standard Analysis Model ranges are not fixed – increase via simple span correction. Any number of additional gases can be added to the above list.
Please contact Protea for specific gas requirements
Measurement Units Concentration: ppb, ppm, mg/m3, %Vol
Mass Emission: mg/hr, g/hr, kg/hr, (utilising external flow input)

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.