The secondary process seal assembly with rupture indication sensor is designed to prevent the passage of gases under pressure through conduit, cables and conductors, while providing immediate notification of a dangerous, potentially explosive seal rupture.   These assemblies are ideal where volatile liquids or gases are stored, processed or transported under pressure.   If the primary seal in an instrument should fail, the secondary process seal will prevent gases, vapors and liquids from migrating into the non-classified location through the electrical system.

The secondary process seal features a rupture indication sensor that opens safely at 60 PSI minimum and activates a circuit to a control system or alarm, which immediately alerts maintenance personnel that the primary seal has ruptured.   The location of the problem can be pinpointed so the problem can be quickly addressed.