A detector detector of free explosive or toxic gases in closed premises (Machine-translation by Google Translate, not legally binding)

摘要

A detector device of exposive or toxic gases, free, in closed premises, in which it is essential: solid closed, hollow, with or without internal vacuum, of any form and material that, keeping in balance in the environment, ascends or descends from its normal position by varying the density of this environment due to the presence in it of gases more or less heavy than air, using this displacement to signal the existence of these gases, escaped, before they are dangerous for their explosiveness or toxicity. (Machine-translation by Google Translate, not legally binding)