There are multiple options
The measuring time can be set to 60 seconds, 120 seconds or auto detect.
When set to auto detect, the LeakControl will determine the scope volume and test for 60 seconds for small scopes, and 120 seconds for larger scopes.
When you first receive your LeakControl it will be set to auto detect but this can be changed by the user if so desired.
The LeakControl pressurizes the scope to a pressure of 220mbar (or 165 mmHg).
When there is a leak in the scope, the LeakControl will keep the scope pressurized to prevent ingress of liquids.
In the unfortunate case of a failure of the LeakControl, the pressure will never exceed 370mbar (or 280mmHg) due to the built in safety valve which is calibrated to release pressure above this point in order to prevent damage to the scope.