Patent ID: 11898942
Assignee: CRESSI-SUB S.P.A.
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A method for checking possible air leaks inside instrumentation for underwater use, the method comprising the following steps:
a) detecting, by means of a pressure sensor, an initial reference pressure P1 inside a main body of said instrumentation for underwater use in a first condition, in which a housing for a battery is open;
b) setting a second condition, in which the housing for the battery is closed;
c) detecting, by means of said pressure sensor, a pressure P2 of air inside said main body of the instrumentation for underwater use after having set said second, closed condition of the housing for the battery;
d) periodically detecting, at time tn, a value Pn of a pressure inside said main body of the instrumentation for underwater use in said closed, second condition of the housing for the battery;
e) transmitting said values P1, P2, Pn to a central unit capable of storing said values and comparing them with one another;
f) activating a communication device capable of emitting a signal perceptible by a user when a drop in a value of pressure Pn measured at time tn with respect to values P1 and P2 is greater than a predetermined threshold value P3;
d′) after step d), inserting said instrumentation for underwater use in a hermetically sealed container, such as an autoclave, and subjecting said instrumentation for underwater use to an external pressure P4 greater than P2; and
e′) after step d′), activating the communication device capable of emitting a signal perceptible by a user when internal pressure Pn, detected at time tn, exceeds tolerance values with respect to P2, due to deformation of the main body of said instrumentation for underwater use.