Bursting disc with detection
1 450 psig | Burst Alert® BS&B SAFETY SYSTEMS, L.L.C.

Each Burst Alert Sensor® is designed to operate in a “normally closed” electrical circuit. A polymer membrane is used to support an electrical conducting circuit. When the pressure event (disk rupture/valve opening) occurs, the flow of fluid places the polymer membrane in tension which leads to the break of a tantalum electrical conductor. This changes the electrical status of the sensor to “normally open.” Recommended operating limits for Burst Alert Sensors are a maximum current of 500mA, maximum voltage 24 VDC; satisfactory operation can be obtained at a few milliamperes current.

Materials

Gaskets. Compressed fiber is the standard gasket material. Optional materials such as glass filled Tef, Garlock® 3000, and Tef are available upon request. The maximum service pressure for standard compressed fiber gaskets is 1450 psig (100 barg). (1000 psig/69 barg for Garlock 3000 and 800 psig/55 barg for Tef). Tef is limited to a maximum service temperature of 200ºF/93ºC.

Membrane. Each Burst Alert Sensor type uses a film of polymer material to support the electrical conductor and provide electrical insulation. Either Polyimide (yellow color in photographs) or PTFE (white color in photographs) is used for this purpose.

Temperature Range

Burst Alert Sensors are suitable for a temperature range of:
-40ºF (-40ºC) to 500ºF (260ºC); 400ºF (204ºC) for the LDAS family
When supplied with standard cable, the cable temperature capability is: -22ºF (-30ºC) to 221ºF (105ºC).
Optional high/low temperature cable permits use over the range from: -85ºF (-65ºC) to 392ºF (200ºC).