20 liter test sphere

LEL determination 
The lower explosion limit is determined in a standardized test device with a volume of 20 liters. The highest concentration that can not be ignited is the lower explosion limit. The test is performed according to EN 14034 3 Annex C.

Pmax and Kst determination  
The maximum explosion pressure (Pmax) and the maximum rate of pressure rise (Kst) can be determined in a standardized test device with a volume of 20 liters. The test is performed according to standard EN 14034 1-2 Annex C.

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