Gas analysis in the GWP airbag laboratory: The gases emitted after the ignition of automotive pyrotechnics are analyzed using an accredited GWP procedure in accordance with AK-ZV01 or SAE J1794. The GWP procedure goes well beyond the procedure required by the standards:
- Measurements with a sensitive process gas mass spectrometer
- Measurements with a process gas FTIR spectrometer
- Redundant measurement of nitrogen oxides (NO, NO2) with a chemiluminescence spectrophotometer (CLD)
- Redundant measurement of carbon monoxide (CO) with a dedicated non-dispersive infrared spectrometer (NDIS)
- Determination of inert gases (Ar, He) in hybrid and cold gas generators
- Determination of up to 21 gases in total
- Continuous measurement and storage of the concentration development over 20 (SAE 1794) or 31 minutes (AK-ZV01) instead of integral measurements.
| – according to the specifications of AK-ZV01:2001-10 of the German automotive industry |
| – alternatively: analogous to SAE/ J 1794:2011-08 or SAE/ USCAR 24:2013-04 or by arrangement, e.g. different company standards |
| – time-resolved gas analysis over e.g. 30 minutes with gas cell FTIR and Dräger test tubes |
| – Sampling: 5 L min-1 per gas handling unit (GHU) |
| – quantified gas concentrations of: CO, CO2, NO, NO2, Cl2, COCl2, SO2, HCl, HCN, HCHO, NH3, H2S etc. |
| – Measurement in the customer vehicle or in the 2,7 m3 tank of the GWP; optionally with numerical conversion to 2,5 m3 (AK-ZV 01) or 2,83 m3 (SAE/USCAR 24) |
| – Standard ignition (max. 3 channels with usual time delays): 2 Ohm/2 Ampere |
| the client provides: |
| 1) BAM approval documents |
| 2) Safety data sheets and |
| 3) sufficient and suitable ignition cables & connectors |
