ProtIR 240M

ProtIR 204M

Product Range

The 204M is a transportable CEM based on FTIR technology. Using the 204M for measurements of waste incineration and combustion plant process is as simple using an FTIR can be. With pre-loaded calibration methods for 28 gas species, automatic nitrogen purging, in-built pressure and temperature alarms, analogue and digital I/O it is a complete site-ready back up CEM.

The ProtIR 204M and PAS software have been designed to allow stack emission monitoring to be carried out to the Environment Agency’s Technical Guidance Note M22 Measuring stack gas emissions using FTIR instruments (TGN M22) as simply and quickly as possible. With the built-in Standard Analysis Model for common gases there is no complex set-up of analysis required. The software as built-in calculations for drift and residual analysis, following the methods described in TGN M22.

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Skilled users of the FTIR can use the chemometric building routines of the PAS software to build analytical methods for specific applications. Set up this way, the 204M can measure thousands of possible gas species over ranges from ppm to %Vol.

Component Standard Range / mg/m3 Extended Range / mg/m3* Lower Detection Limit
(LDL) / mg/m3**
CO 0 - 75 0 - 18750 0.2
NO 0 - 200 0 - 2000 0.9
NO2 0 - 200 0 - 2000 0.3
N2O 0 - 100 0 - 1000 0.2
SO2 0 - 75 0 - 30000 0.8
NH3 0 - 15 - 0.1
HCl 0 - 15 0 - 4000 0.3
HF 0 - 15 0 - 70 0.1
HBr 0 - 200 - 1.8
CH4 (Methane) 0 - 70 0 - 700 0.2
C2H6 (Ethane) 0 - 50 0 - 1400 0.4
C3H8 (Propane) 0 - 50 0 - 2000 0.3
C4H10 (n-Butane) 0 - 50 0 - 300 0.9
C6H14 (n-Hexane) 0 - 50 0 - 400 0.9
C2H4 (Ethene) 0 - 25 0 - 1250 0.3
CH3OH (Methanol) 0 - 70 - 0.4
HCHO (Formaldehyde) 0 - 20 - 0.3
C6H6 (Benzene) 0 - 250 - 3.4
C6H6O (Phenol) 0 - 100 - 0.4
HCN 0 - 15 0 - 600 0.2
CCl4 0 - 200 0 - 1400 3.0
CS2 0 - 100 0 - 400 0.4
COS 0 - 50 - 0.05
CF4 0 - 40 0 - 600 0.05
SF6 0 - 65 - 0.05
TOC (Indication only) 0 - 50 0 - 2000 0.4
H2O 0 - 40% - <1000ppm
CO2 0 - 20% 0 - 60% <2 ppm
O2 (via zirconia sensor) 0 - 20.9% N/A <0.4%

Zirconia Sensor

The 204M analyser contains an integrated ZrO2 or Lambda sensor. For emissions compliance monitoring there is always the requirement to measure oxygen for correction and reporting of results. Often this requires a separate oxygen analyser, which will need extra sample conditioning. The ZrO2 sensor is a hot, wet sensor built into the same gas sample path that the FTIR multi-gas analyser is measuring. This enables a real-time oxygen measurement to be made alongside the standard gas measurements of CO, NO, SO2 etc.

The ZrO2 is calibrated once on start-up of the analyser using ambient air as a span gas. The calibration is made using a built-in calibration wizard in the FTIR software:

Protir 204M
Protir 204M In Built Dilution

In-built Dilution

The 204M gas analyser can be supplied with a built-in mass flow controller (MFC) that is controlled by the PAS software. This MFC is controlled to allow a precise amount of dilution gas to pass into the measurement stream, often at the sample probe. By diluting the sample accurately, this allows the 204M to measure much higher gas concentrations than would otherwise be possible with the analyser.

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.

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