The new MultiGas™ 2030 1065-Ready FTIR gas cell with custom heaters

and new improved insulation.

Description

The MKS MultiGas 2030 1065-Ready analyzer includes

a 5 Hz acquisition FTIR spectrometer coupled with a

patented 5.11m high-optical-throughput, low volume

(200 mL) gas sampling cell. The gas cell was redesigned

for increased ruggedness and corrosion resistance. It can

handle up to 100 LPM, providing a true 5 Hz sampling rate

along with the 5 Hz data acquisition rate. The 3/8'' inlet and

outlet plumbing reduces backpressure and noise, enabling

flows from 0.5 LPM up to 100 LPM while providing

sensitivity that is unbeaten in the industry. The new cell

has welded inlet and outlet which are more durable and

resistant to leaks in cases where the gas cell needs to

be cleaned frequently. The cell also includes improved

insulation which ensures that the gas remains at correct

temperature and that the instrument’s internal components

do not overheat.

At a flow rate of 60 LPM the refresh rate of the gas sample

is actually 5 Hz (gas refresh time of 0.2 sec) – providing

speed and sensitivity unmatched by any other analyzer.

Timelines of combustion gases during a 10 sec window, showing multiple

component changes during the emissions test cycle. Note the different

concentration profiles for each component, demonstrating the high time

resolution of the analyzer.

A section of the mid-IR combustion gas spectrum in the NO absorbance region is shown in the graph to the left with the gas sample spectrum in blue

and NO reference spectrum in red. A narrower wavenumber region is displayed in the graph to the right, showing the sample spectrum (thick blue line),

an overall spectral fit (thin blue line), as well as the sample NO absorbance (thick red line) showing an excellent match with the fitted NO spectrum (thin

analysis using masking (shaded regions in blue). As a result, only the spectrum regions where high NO signal and low H

extract the readings.

The resolution of gas profiles of the MultiGas 2030

1065-Ready has indeed been observed to exceed that of

instruments running at 10 Hz and has been attributed to

differences in flow rates where the 10 Hz analyzers are

suffering from under sampling (low flow rate).

The MultiGas 2030 1065-Ready not only operates at a

high sampling and acquisition rate but does so without

sacrificing resolution. The analyzer maintains its excellent

spectra for optimum quantification of components that

have high interference with water and CO

below illustrates the interference effect by showing the

severe overlap between NO and H

due to the high resolution of the spectrum, the NO peaks

can be clearly separated from the H

accurate NO quantification.