Pressure relief device having conductive trace sensor formed thereon

A rupture indicator for detecting a process condition associated with an over-pressure relief device having a central rupturable section and an outer flange section in surrounding relationship to said central section, the rupture indicator comprising:

• an electrically nonconductive substrate configured to be operatively associated with the outer flange section and including a cantilevered tab that is configured to extend from said substrate over and in spaced relation to a surface of the central section;
• an electrically conductive trace located on said substrate and extending onto at least a portion of said cantilevered tab, said trace defining an electrical circuit capable of conducting an electrical signal, said circuit being operable to detect the process condition associated with the over-pressure relief device;
• a bottom cover supporting said substrate and including one or more bendable tabs operable to engage one or more wires;
• one or more spacers positioned on said bottom cover and bordering at least a portion of said substrate;
• and
• a top cover that overlays said one or more spacers.

A rupture indicator for detecting a process condition associated with an over-pressure relief device having a central rupturable section and an outer flange section in surrounding relationship to said central section, the rupture indicator comprising:

• an electrically nonconductive substrate configured to be operatively associated with the outer flange section and including a cantilevered tab that is configured to extend from said substrate over and in spaced relation to a surface of the central section;
• and
• an electrically conductive trace located on said substrate and extending onto at least a portion of said cantilevered tab, said trace defining an electrical circuit capable of conducting an electrical signal, said circuit being operable to detect the process condition associated with the over-pressure relief device,
• wherein said cantilevered tab includes a first surface configured to face the central section and a second surface opposing said first surface, and said trace is disposed on said second surface.

A rupture indicator for detecting a process condition associated with an over-pressure relief device having a central rupturable section and an outer flange section in surrounding relationship to said central section, the rupture indicator comprising:

• a pliable substrate configured to be operatively associated with the outer flange section and including a cantilevered end that is configured to extend over in spaced relation to a surface of the central section;
• an electrically conductive trace located on said substrate and extending onto at least a portion of said cantilevered end, said trace defining an electrical circuit capable of conducting an electrical signal;
• and
• a rigid member operatively associated with said substrate and extending over said trace on said at least a portion of said cantilevered end so that when the central section ruptures forming a petal, the petal contacts and deforms said cantilevered end so that said rigid member contacts said trace, thereby affecting said circuit.

A rupture indicator for detecting a process condition associated with an over-pressure relief device having a central rupturable section and an outer flange section in surrounding relationship to said central section, the rupture indicator comprising:

• a pliable bottom cover operatively associated with said outer flange section and including a cantilevered end operable to extend over and in spaced relation to a surface of said central section;
• a frangible non-conductive substrate positioned on the bottom cover;
• an electrically conductive trace located on said non-conductive substrate and including a portion that extends over at least a portion of said cantilevered end, said trace defining an electrical circuit capable of conducting an electrical signal;
• and
• a rigid member operatively associated with said substrate and having a pointed end extending over said portion of said trace so that when said central section ruptures forming a petal, the petal contacts and deforms said cantilevered end so that said pointed end contacts said trace, thereby affecting said circuit.