General
The TwinSense is a dual Ion-Molecule Reaction - Mass Spectrometer (IMR-MS) in one analyzer unit.
The TwinSense dual mass spectrometer features a unique combination which has been specifically developed in order to measure pre and post catalyst fast and simultaneously.
Functional Diagram
Typical Applications
- Development of combustion engines (diesel and gasoline)
- Fast measurement of non regulated hydrocarbons
- Ammonia measurements on DeNOx catalysts
- NOx measurements on diesel engines
- Alternative fuels
- Catalysts development
- Desulphurization strategies
Success Stories
Measureable Compounds with EI-MS (excerpt)
Inorganic Compounds
| Substance name | Molecular formula |
| Water | H2O |
| Oxygen | O2 |
| Carbon dioxide | CO2 |
| Carbon monoxide | CO |
| Hydrogen sulfide | H2S |
| Sulfur dioxide | SO2 |
| Sulfur | S |
| Ammonia | NH3 |
| Nitrogen monoxide | NO |
| Nitrogen dioxide | NO2 |
| Dinitrogen monoxide | N2O |
| Hydrogen chloride | HCl |
Aromatics
| Substance name | Molecular formula |
| Benzene | C6H6 |
| Toluene | C7H8 |
| Styrene | C8H8 |
| Xylene / Ethylbenzene | C8H10 |
| Phenol | C6H6O |
| PAH’s |
Alkanes
| Substance name | Molecular formula |
| Methane | CH4 |
| Ethane | C2H6 |
| Propane | C3H8 |
| Butane | C4H10 |
| Pentane | C5H12 |
| Hexane | C6H14 |
| Heptane | C7H16 |
| Octane | C8H18 |
| Nonane | C9H20 |
| Decane | C10H22 |
Alkynes
| Substance name | Molecular formula |
| Acetylene | C2H2 |
| Propyne | C3H4 |
Sulfur Compounds
| Substance name | Molecular formula |
| Hydrogen sulfide | H2S |
| Carbonyl sulfide | COS |
| Sulfur dioxide | SO2 |
| Carbon disulfide | CS2 |
| Methyl mercaptane | CH3SH |
| Ethyl mercaptane | C2H5SH |
Nitrogen Compounds
| Substance name | Molecular formula |
| Ammonia | NH3 |
| Nitrogen monoxide | NO |
| Nitrogen dioxide | NO2 |
| Dinitrogen monoxide | N20 |
Alcohols
| Substance name | Molecular formula |
| Methanol | CH3OH |
| Ethanol | C2H5OH |
| Propanol | C3H7OH |
| Butanol | C4H9OH |
Aldehydes
| Substance name | Molecular formula |
| Formaldehyde | HCHO |
| Acetaldehyde | CH3CHO |
| Propionaldehyde | C2H5CHO |
| Hexanal | C6H12O |
| Benzaldehyde | C7H6O |
Specifications
| Technical Data | IMR-MS 1 | Technical Data | IMR-MS 2 |
| Mass range | 7 – 519 amu | Mass range | 7 – 519 amu |
| Resolution | ‹ 1 amu | Resolution | ‹ 1 amu |
| Analysis time | ›= 1 msec/amu | Analysis time | ›= 1 msec/amu |
| Measuring range* | 10^5 | Measuring range* | 10^5 |
| Response time* | T90 ‹ 20 msec | Response time* | T90 ‹ 20 msec |
| Lower detection limit* | 0.4 ppt | Lower detection limit* | 0.4 ppt |
| Concentration drift | ‹ ± 5 % over 24 h | Concentration drift | ‹ ± 5 % over 24 h |
| Reproducibility | ‹ ± 3 % | Reproducibility | ‹ ± 3 % |
| Accuracy | ‹ ± 2 % | Accuracy | ‹ ± 2 % |
| Ambient temperature | 20 °C - 35 °C | Ambient temperature | 20 °C - 35 °C |
| Humidity max. | 80 % (non-condensing) | Humidity max. | 80 % (non-condensing) |
| Gas consumption | 30 – 250 ml/min | Gas consumption | 30 – 250 ml/min |
| Gas inlet temperature | 50 °C – 190 °C adjustable | Gas inlet temperature | 50 °C – 190 °C adjustable |
| Gas inlet pressure | 0.75 – 2 bar(a) | Gas inlet pressure | 0.75 – 2 bar(a) |
| Power | 230 V/50 Hz or 115 V/60 Hz 1,250 W | ||
| Dimension (WxHxD) | 600 x 1.692 x 700 mm | ||
| Weight | 208 kg |
* depending on the components measured, system setup and the settings
** depending on the type of gas inlet System
Reference Customers (excerpt)
