B.D.I.®
8Pages

The B.D.I. (Burst Disc Indicator) Alarm System is designed for use with Continental Disc ® rupture discs. The B.D.I. Alarm System signals the system operator when a rupture disc has burst to relieve an overpressure or vacuum condition. Continental Disc Rupture Discs with the B.D.I. Alarm System WHEN NOTIFICATION OF PRESSURE RELIEF IS ESSENTIAL The heart of the system is the B.D.I. Alarm Strip. Upon disc rupture, the B.D.I. Alarm Strip is severed, disrupting the flow of electric current through the strip. The change in the electric circuit status can be monitored in a control room, or an optional alarm monitor is available from Continental Disc to warn of a rupture disc burst and/or activate appropriate equipment. The B.D.I. Alarm System should be specified: When warning of pressure relief is essential for plant safety When a signal is required to initiate an automatic function, process change or shut down procedure When immediate notice is needed of relief of an overpressure or vacuum condition to indicate process malfunction When loss or contamination of product will occur if a rupture disc is not replaced immediately When indication is vital that a rupture disc has burst and toxic substances are venting When monitoring of rupture discs is important in hard-to-reach locations Proven Design The B.D.I. Alarm Strip is designed to break when its correspond­ng rupture disc i bursts. Continental Disc’s design has been proven through years of testing, both in the field and in our ASME accepted flow testing laboratory. This testing has proved the reliability of the alarm strip when used with Continental Disc Corporation rupture discs. The B.D.I. Alarm Strip does not affect the life or performance of the rupture disc. The B.D.I. Alarm Strip is carefully designed and manufactured with the following features in mind: Resistant to chemical attack and corrosion Usable over a wide range of temperatures Easily replaceable upon disc rupture Compatible with standard design Continental Disc Corporation rupture discs ATEX Directive Compliant The B.D.I. Alarm Strip and the MTB‑700 Alarm Monitor have been certified for use in “potentially explosive atmospheres” according to the requirements of the European Union, ATEX Directive 94/9/EC. ATEX type approval and quality assurance notification certificates are available on our website at www.contdisc.com. B.D.I. with shielded cable

B.D.I. Alarm System B.D.I. Alarm Strip // Operating Schematic Normal Closed State Open State Connector Lead Wire Optional Switching Connection Annunciator or Control Panel Annunciator or Control Panel Visual Warning Audio Warning TYPICAL APPLICATIONS Rupture disc applications which can incorporate a B.D.I. Alarm System are limitless and found across a broad spectrum of industries and processes, and where an instant notification of an overpressure or vacuum event is required Relief Valves Isolating relief valves with a rupture disc protects internal valve parts from corrosive media. The...

THE HEART OF THE SYSTEM ...THE B.D.I. ALARM STRIP The B.D.I. Alarm Strip is designed to break when its correspond­ng rupture disc bursts. This creates i an open circuit which is detected by the B.D.I. Alarm Monitor, or other suitable monitoring device. Design Specifications Maximum current: 50 milliamps Maximum voltage: 24 VDC RMS Operating temperature range: -40°F to +400°F (-40°C to +204°C) Minimum relieving pressures: MINIMUM PRESSURE FOR UNIVERSAL B.D.I. NOMINAL SIZE The UNIVERSAL Low Pressure B.D.I. is available for sizes 1" - 4" for pressures down to 1 psig (0,07 barg) Components The...

Table 1 Table 2 BOLTING CLASSES AVAILABLE FOR UNIVERSAL B.D.I. ALARMS RUPTURE DISC / B.D.I. ALARM STRIP TYPE SELECTION INTEGRAL B.D.I. SANITRX HPX® ENVIRO SEAL Vent Panel Components continued... The Sanitary (IS) B.D.I. design is compatible with rupture disc/ holder assemblies designed to be install between industry standard ferrules. Standard gaskets are Platinum or Peroxide Cured Silicone, Black and White VITON®, Black and White EPDM, PTFE and steel reinforced PTFE materials. Additional information regarding gasket materials and temperature limits for the Sanitary (IS) B.D.I. design can...

B.D.I. ALARM STRIP GASKET STRAIN BRACE SHIELDED CABLE BARE LEADS CONNECTION B. D.I . L EA D W I RE A SS E M B LY A N D CA L - VAC RUPTURE D IS C WITH IN TE GRAL B .D .I. LEAD WIRE STRAIN RELIEF DEVICE STANDARD PLUG B.D.I. CONNECTION

B.D.I. ALARM MONITOR FUNCTIONS, FEATURES & OPTIONS The B.D.I. Alarm System uses a normally closed electrical circuit. A continuous signal flows between the B.D.I. Alarm Strip and the Alarm Monitor under normal conditions. Once the rupture disc bursts, the Alarm Strip breaks, opening the electrical circuit. B.D.I. Alarm Monitors contain replaceable modules with individual channel relays. Each channel relay connects to one alarm strip. As the rupture disc and B.D.I. Alarm Strip break, a specific relay is actuated, sending a signal to the control panel. Control panels, annunciators, light...

Model Overview MODELS AVAILABLE Dry contacts for remote alarms Output relay type 5 A @ 240 VAC Resistive 5 A @ 24 VDC Resistive 1/8 HP @ 120/240 VAC, 7 A maximum carry current 2 A @ 120 VAC Resistive 2 A @ 120 VAC Resistive 1 A @ 120 VAC Inductive 1 A @ 120 VAC Inductive 2 A @ 24 VDC Inductive 2 A @ 24 VDC Inductive Intrinsically safe field circuit Barrier type galvanically isolated zener diode zener diode Enclosure rating Operating temperature range Reset mode (latching, non-latching) latching only either available either available Output current to BDI Strip Remote master test contacts...

Available When Specified UNIVERSAL B.D.I. WITH STANDARD PLUG CONNECTION ATEX Directive Compliant INTEGRAL B.D.I. WITH SHIELDED CABLE AND BARE LEADS INTEGRAL B.D.I. WITH STANDARD PLUG CONNECTION NOTE: Product parameters are based on United States customary units. Values in metric units are provided for reference only. FOR MORE INFORMATION ON OUR OTHER BURST DISC INDICATION PRODUCTS, PLEASE SEE THE BDI-FLX™ BURST DISC SENSOR SYSTEM DATASHEET. VITON® is a registered trademark of E.I. du Pont de Nemours and Company used under license GYLON® is a registered trademark of Garlock Sealing...