The CDC BDI uses a metallic strip bonded to a membrane which is close coupled to the disc. The alarm strip is interfaced with a monitoring unit, annunciator panel, control panel or site DCS which will trigger an alarm when activated by the opening of a rupture disc or vent panel.
Simple in principal, this method is extremely reliable and cannot become fouled or corroded into the wrong position.
The B.D.I. Alarm System is a normally closed, low-powered circuit. When a rupture disc opens, the alarm strip is severed, interrupting the circuit which activates a monitoring device. This device is used to signal that an overpressure condition has occurred and that media is venting.
Proven features include: