公开(公告)号：EP3335039A1

公开(公告)日：2018-06-20

申请号：EP16758265.9

申请日：2016-08-10

申请人： Take Off Diffusion S.A.

发明人： VOUMARD, Olivier

IPC分类号： G01N33/00 ,  G04G21/02

CPC分类号： G01N33/0063 ,  G01N33/004 ,  G01N33/0044 ,  G04G9/0005 ,  G04G21/02 ,  G08B21/14 ,  G08B21/182

摘要： A device for measuring the concentration of a gas that makes up ambient air comprises a wristwatch comprising a watch case (13) containing a watch movement, time indicating members (1, 3, 9) visible through a crystal of the watch case (13). The wristwatch furthermore comprises at least one sensor (11) designed to measure the concentration of a gas involved in the makeup of the ambient air. The wristwatch also comprises means for actuating an alarm when the gas concentration measured by the sensor (11) reaches or crosses a threshold. The device has two operating states: a "time" state and an "alarm" state, in which states, in the "time" state, the time-indicating members (1, 1 ', 3, 9) indicate time and the sensor (11) constantly measures the concentration of gas without displaying it or activating the alarm. If the sensor (11) detects a concentration of a gas, the device switches into "alarm" state in which the indicator member (4, 4', 8, 9, 10) displays this measured value and/or the means for actuating an alarm actuate an alarm normally without the time being displayed.