PRESSURE MEASUREMENT DEVICE AND PROTECTIVE DEVICE FOR A PRESSURE SENSOR

The invention relates to a device for pressure measurements in a combustion chamber (10), with a pressure sensor (1) arranged in the access bore (13) of a combustion chamber boundary (11) and having a sensor membrane (2), wherein the sensor membrane (2) is in communication with the combustion chamber (10) via an indicator bore (12) in the combustion chamber boundary (11). To protect against super-knock or mega-knock events, a protective device (3) is arranged in front of the sensor membrane (2) of the pressure sensor (1), which has a control element (4, 5, 20) that reduces and/or prevents gas access to the sensor membrane (2) of the pressure sensor (1) above a predefined pressure threshold.