O2, CO, H2S, NO, NO2 and SO2
GA-12 is amongst the smallest handheld gas analysers – equipped with up to 3 Electrochemical cells. Small dimensions and light weight make it very convenient for technicians that use analyser on a daily basis. Rich offer of equipment and add-ons makes it interesting for more demanding users. Manufactured according to the principles of EN 50379.
Sampling probe with K-type thermocouple (available in two lengths 150 mm or 200 mm)
Sampling line with inline filter and condensate trap (2m)
The GA12® Handheld Gas Analyser offers multiple sensor configurations. Here are the measuring parameter for the most common gases.
For other gases or different measuring ranges, please consult us.
| Gas | Technology | Resolution | Measuring range | Accuracy | Response time T90 | Conformity |
|---|---|---|---|---|---|---|
| H2S | AE electrochemical sensor | 0,1 ppm | 2000 ppm | ± 5 ppm abs. | 45 sec | EN 50379; CTM-030 |
| SO2 | AE electrochemical sensor | 0,1 ppm | 2000 ppm | ± 5 ppm abs. | 45 sec | EN 50379; CTM-030 |
| O2 | A2 electrochemical sensor | 0,01% | 20,95% | ± 0,01% abs. | 45 sec | EN 50379; CTM-030 |
| O2 | A2 electrochemical sensor | 0,01% | 25,00% | ± 0,01% abs. | 45 sec | EN 50379; CTM-030 |
| CO | AF electrochemical sensor | 0,1 ppm | 2000 ppm | ± 5 ppm abs. | 45 sec | EN 50379; CTM-030 |
| CO | AF electrochemical sensor | 1 ppm | 4000 ppm | ± 5 ppm abs. | 45 sec | EN 50379; CTM-030 |
| CO | AF electrochemical sensor | 1 ppm | 20000 ppm | ± 10 ppm abs. | 45 sec | EN 50379; CTM-030 |
| CO | AE electrochemical sensor | 0,001% | 10 % | ± 0,005% abs. | 45 sec | EN 50379; CTM-030 |
| CO | AX electrochemical sensor with low H2 cross interference sensitivity | 1 ppm | 4000 ppm | ± 5 ppm abs. | 45 sec | EN 50379; CTM-030 |
| NO | AE electrochemical sensor | 0,1 ppm | 2000 ppm | ± 5 ppm abs. | 45 sec | EN 50379; CTM-030 |
| NO2 | AF electrochemical sensor | 0,1 ppm | 1000 ppm | ± 5 ppm abs. | 45 sec | EN 50379; CTM-030 |
Tailored to TODAY’s industrial requirements
Process gas and emissions monitoring in combustion plants, boilers, syngas, biogas, waste recycling facilities (Waste to Energy) and associated filtration systems are typical applications for the GA12® Handheld Gas Analyser.
“Landfilling” is the main method for disposal of municipal and household solid wastes or refuses in Australia. Although maintained in an oxygen-free environment and relatively dry conditions, landfill waste produces significant amounts of landfill gas (mostly methane). The Mamos enables process and air pollution emissions monitoring from solid waste landfills. Landfills operations require the control of methane CH4 and non-methane organic compound emissions (NMHC) emitted as well as an accurate online monitoring of the gas composition (CH4, CO, CO2, H2, H2S and O2). This effectively requires the collection and combustion of landfill gases. So, a good solution to the landfill gas problem is to collect it and use it to produce electricity. Landfill gas (LFG) entering the gas sampling system is saturated with water, and that water must be removed prior to further processing. The typical dry composition of the low-Btu gas is 57% CH4, 42% carbon dioxide, 0.5% nitrogen, 0.2% hydrogen, 0 to 1000 ppm of H2S and 0.2%oxygen. In addition, a significant number of other compounds are found in trace quantities. These include alkanes, aromatics, chlorocarbons, oxygenated compounds, other hydrocarbons and sulfur dioxide.
In biotechnological processes, the detailed monitoring of the fermentation product, in this case biogas, provides valuable information. Therefore, it is recommended to monitor both the volume of gas produced and the gas composition. With regard to process monitoring, a change in either gas production or gas composition can be an indicator of process imbalance.
Biogas primary constituents
Accuracy and high reliability in harsh conditions of operations makes the GA12® a powerful optimisation tool for waste recycling facilities (incinerator, water treatment plant).
SCR and SNCR Selective non-catalytic and catalytic reductions are designed to reduce the emissions of NOx by injecting ammonia is directly injected at the combustion chamber exhaust. This process causes the nitrogen oxides to react with the ammonium and turn into nitrogen and water. The GA12® is suited to upstream and downstream SNCR/SCR short term testing and provides plants operator with accurate data to control NOx regulatory emissions while optimising the denitrification process with upstream NOx measurements.
GTC and flue gas scrubbers reduce the emissions of acid gases such as SO2 with pulverised lime powder or solutions while the discharge of heavy metals and organic pollutants is controlled with the addition of activated carbon. Accurate monitoring of O2, SO2 upstream of the GTC allows reducing the quantity of reagents injected.
The use of process gas handheld gas analysers enables short term control of the gas composition at locations such blast furnace gas outlet, converter off gas exhaust and coking gas outlet in order to analyse the fuel gases composition by measuring the concentration of CO, CO2, O2, N2, CH4, and H2. There from the calorific value BTU and the Wobbe Index WI can be accurately calculated. Modern steel plants uses dedicated stationary online monitoring system to monitor the primary constituents of Direct Reduction Iron process gases essential to have a full understanding of the process status and efficiency.