B.D.I. Alarm System Brochure

Continental Disc Corporation has representatives located throughout the world.Contact the C.D.C. office nearest you for the authorized representative in your area.Rupture Discs withB.D.I.® Alarm System 5-7701-5Continental Disc Corporation reserves the right to alter the information in this publication without notice. Printed in U.S.A.Reproduction without written permission prohibited. © 1983 - 2010 Continental Disc Corporation COR0623 10/10THE NETHERLANDSContinental Disc CorporationEnergieweg 202382 NJ Zoeterwoude-RijndijkThe NetherlandsPhone: + (31) 71-5412221FAX: + (31) 71-5414361E-mail: cdcnl@contdisc.comCHINAContinental Disc CorporationRoom 910, Tower B, COFCO PlazaNo. 8 JianGuoMenNei AvenueBeijing (100005), P.R. ChinaPhone: + (86) 10-6522-4885Fax: + (86) 10-6522-2885Mobile: + (86) 137-0103-8871E-mail: cdcchina@contdisc.comINDIAGroth Continental Mfg. Pvt. Ltd.Survey No. 423/P, MahagujaratIndustrial Estate, Moraiya, Sarkhej-Bavla Road, Ahmedabad 382213,INDIAE-mail: gcmpl@contdisc.comCORPORATE HEADQUARTERSContinental Disc Corporation3160 W. Heartland DriveLiberty, MO 64068-3385 USAPhone: (816) 792-1500FAX: (816) 792-2277 / 5447E-mail: pressure@contdisc.comWebsite: www.contdisc.comPressure Equipment DirectiveAvailable When SpecifiedChina Manufacture LicenseAvailable When SpecifiedASME Code Symbol StampAvailable When SpecifiedContinental Rupture Discswith the B.D.I.®* Alarm SystemThe Continental B.D.I. (Burst DiscIndicator) Alarm System is designedspecifically for use with ContinentalRupture Discs. It signals the operator ofa system when a rupture disc has burstto relieve an overpressure condition.The heart of the system is the B.D.I.Alarm Strip. Upon disc rupture, the BurstDisc Indicator Alarm Strip is severed,disrupting the flow of electric currentthrough the strip. An attached alarmmonitor can then transmit a warningand/or activate appropriate equipment.The B.D.I. Alarm System should bespecified:• When warning of pressure relief isessential for plant safety• When immediate notice is needed ofrelief of an overpressure or vacuumcondition to indicate processmalfunction• When indication is vital that a rupturedisc has burst and toxic substancesare venting• When emergency equipment mustbe triggered immediately upon discrupture to alter or stop a process• When loss or contamination ofproduct will occur if a rupture disc isnot replaced immediately• When monitoring of rupture discs isimportant in hard-to-reach locationsProven DesignThe Burst Disc Indicator Alarm Strip isdesigned to break when its correspond-ing rupture disc bursts. Continental'sdesign has been proven through years oftesting, both in the field and in our ASMEaccepted flow testing laboratory. Thistesting has proved the reliability of theAlarm Strip when used with ContinentalRupture Discs. The B.D.I. Alarm Stripdoes not affect the life or performance ofthe rupture disc.The Continental B.D.I. Alarm Strip iscarefully designed and manufacturedwith the following features in mind:• Resistant to chemicals and weather• Usable over a wide range oftemperatures• Easily replaceable upon disc rupture• Compatible with standard designContinental Rupture DiscsATEX Directive CompliantThe B.D.I. Alarm Strip and theMTB-700 Alarm Monitor have beencertified for use in “potentially explosiveatmospheres” according to therequirements of the European Union,ATEX Directive 94/9/EC. ATEX typeapproval and quality assurancenotification certificates are available onour website at www.contdisc.com.Typical ApplicationsRupture disc applications which canincorporate the B.D.I. Alarm System areunlimited. They occur in all majorindustries—anywhere quick notice of anoverpressure or vacuum condition andrelease is required.Relief ValvesIsolating relief valves with a rupturedisc protects internal valve parts fromcorrosive media. The B.D.I. AlarmSystem signals when a disc rupturerelieves an overpressure condition,enabling the operator to correct theprocess and restore protection to therelief valve.Installing a rupture disc with a B.D.I.Alarm Strip on the outlet side of a reliefvalve notifies the operator when a valvehas relieved. This is an especiallyimportant application when handlingtoxic or corrosive substances.Processing VesselsRupture discs with the B.D.I. AlarmSystem are used on processing tanksand vessels requiring protection fromoverpressure or vacuum conditions. Thesystem warns when a disc ruptures.Chemical ReactorsWhen processing temperatures andpressures are critical, the B.D.I. AlarmSystem gives immediate warning whenservice is interrupted due to relief of anoverpressure condition.Tank TransportsThe B.D.I. Alarm System signalsimmediately when a rupture disc hasburst, thereby releasing product to theatmosphere.Pipeline Pumping StationsRupture discs relieve pressure buildupin pumping stations caused by blockedpipelines. The system signals as reliefoccurs and can trigger shutdown ofpumping systems.Fermentation VesselsProducts requiring gaseous blanketsto prevent spoilage or productcontamination must be protected fromthe atmosphere. Immediate warning ofdisc rupture permits quick correctiveaction, reducing loss of product andexpensive gases.?Model BB-400A Alarm MonitorThe BB-400A Monitor is a largerversion of the BB-100A. It uses thesame replaceable sensing and alarmrelays module, but it can accommodatefour modules for a total of eight differentrupture discs, monitored individually andcontinuously.Specifications:• Identical to Model BB-100A• Intrinsically Safe*Replacement module for the BB-400AMonitor: specify NAF-100?Model LCB-400 Alarm MonitorThe LCB-400 is designed for usewhere an intrinsically safe* sensor signalis not required. The unit is a wall mountdesign and provides information to theoperator's control panel. It featuresmodular construction with eight easilyreplaceable modules.Specifications:• Monitors eight discs separately andcontinuously• Highly regulated low current signaloutput to disc: 12 VDC @ 0.5 MAmaxReplacement module for the LCB-400Monitor: specify LCAF-100?Custom Built MonitorCustom designed alarm monitors areavailable for specific applications, suchas the two-channel unit pictured. Contactthe factory for details.?MTB-700 Alarm MonitorThe MTB-700 Monitor incorporatesIntrinsically Safe Galvanically IsolatedBarriers, approved for use in manycountries worldwide. Upon disc rupture,these barriers activate signals and/oroutput relays to warn operators andactuate pumps, valves, or otherequipment connected to the system.The unit is modular in construction,and can be purchased with a single MTLtwo-channel barrier, or it can beupgraded to four channels. Eachchannel features one DPDT relay forauxiliary contacts, capable of operating a1/8 HP motor at 120/240VAC for amaximum carrying current of 7 AMPS.When purchased with an annunciatorpanel, the monitor provides both visualand auditory warning capabilities. Themonitor may also be tested and resetfrom a remote location, i.e. control room,laboratory, etc.Specifications:• 100% galvanically isolated barriers• 2 channels, expandable to 4• Supply voltage: 24 VDC,120/240 VAC• With or without annunciator panel• Maximum intrinsically safe outputlevel: 7 VDC @ 22 MA• Latching mode on all channels• Intrinsically safe barrier approvals:USA (Factory Mutual): Class I, II& III: Division I, Groups A-GUK (BASEEFA): [EEx ia] IIcAustralia (SA): [EEx ia] IIcDenmark (DEMKO): [EEx ia] IIcFinland (SETI): [EEx ia] IIcCanada (CSA): Class I, II & III:Division I, Groups A-GJapan (RIIS): 3aG6• Operating temperature range:-20°C (-4°F) to 45°C (113°F)• Enclosure Nema ratings4, 4X, 12 and 13B.D.I. ALARM MONITOR SPECIFICATIONS7??????Annunciatoror Control PanelAnnunciatoror Control PanelB.D.I.ALARM MONITORB.D.I.ALARM MONITOROPENSTATEVisualWarningAudioWarningConnectorOptionalSwitchingConnectionLeadwireNORMALCLOSEDSTATEB.D.I.ALARMSTRIPBURST DISC INDICATOR2B.D. I . A L A RM S Y S T EM• O P E R A T I N G S C H E M A T I C •Storage/Silo TanksStorage tanks which damage easilyfrom overpressure or vacuum conditionsare protected with the CAL-VAC®Rupture Disc or POS-A-SET® RuptureDisc. Often these discs are located inhard-to-reach areas. The B.D.I. AlarmSystem warns immediately when therupture disc bursts.Distillation EquipmentDistilled products must be free fromcontamination. Operator warning is vitalwhen a product batch is contaminatedfrom the intake of an outside atmosphereduring vacuum relief. The B.D.I. AlarmSystem provides the needed warning.The Heart of the System:The B.D.I. Alarm StripThe Burst Disc Indicator Alarm Strip isdesigned to break when its correspond-ing rupture disc bursts. This creates anopen circuit which is detected by theB.D.I. Alarm Monitor, or other suitablemonitoring 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)ComponentsThe B.D.I. Alarm Strip is composed ofcopper conductors adhered to a thinstrip of Kapton®** film. Tantalumconductors are available for someapplications. The tail of the strip,extending from the rupture disc seatingarea to the B.D.I. Connector, is protectedwith polyolefin heat shrink tubing. Astrain brace is attached to most designsto prevent undue stress to the B.D.I.Alarm Strip and premature alert.Each B.D.I. Alarm Strip is carefullyadhered to a Teflon®** membrane toinsure proper breakage upon discrupture. Care is also taken to positionthe alarm strip where it will be grippedproperly by the rupture disc flangeswithout crushing the conductors. Thisdesign prevents the B.D.I. system fromsignaling prematurely upon installation.The B.D.I. Alarm Strip is manufacturedas either an Integral Fit or a Universaldesign, dependent upon the rupture discproduct it is to mate with. Refer to photoon page 4-5 for examples. It iscompatible with assemblies designed toinstall between flange bolting classesincluding ANSI, DIN, JIS, BSI andsanitary clamping designs. Customdesigns are also available. Contact thefactory for details.Linking the B.D.I. Alarm Strip to themonitoring system is the B.D.I.Connector. A two-pin bullet terminal withO-rings protects the terminals at theconnecting point against moisture. It isabrasion resistant, flexible, and highlyweather-resistant, even in sub-zeroclimates.The Interconnecting Leadwirebetween the B.D.I. Connector and amonitor or junction box is unfinished onone end to permit connection dictated bylocal electrical codes. It is available instandard lengths from 6 ft. to 500 ft.(1.8m to 152m).To protect the tail of the B.D.I. AlarmStrip, each comes with a LeadwireStrain Relief Device. This deviceprevents undue stress on the alarm stripby securing the B.D.I. InterconnectingLeadwire in place.OptionWhen there is a distance of 15 feet ormore between the B.D.I. Alarm Strip andthe monitoring device, a junction box isrecommended. This box protects thealarm strip from the weight of the longcable and from environmental elements.Shielded cable (such as blue Beldon#8412 cable) should be used for cableruns between a junction box and theB.D.I. Alarm Monitor, to preventtriggering of a false alarm. If the cable isrun through conduit, a less expensivecable (such as Beldon #8441instrumentation cable) can be used.3From LeadwireFromB.D.I. StripOpen end availablein various lengthsSanitary Design HolderInsert Design AssemblyB.D.I. ALARM MONITORS6Burst Disc Indicator Alarm MonitorsThe B.D.I. Alarm System uses a normallyclosed electrical circuit. A continuous signalflows between the B.D.I. Alarm Strip and theAlarm Monitor under normal conditions. Oncethe rupture disc bursts, the Alarm Strip breaks,opening the electrical circuit.Each Continental B.D.I. Monitor containsreplaceable modules with individual channelrelays. Each channel relay connects to oneAlarm Strip. As the rupture disc and B.D.I. stripbreak, a specific relay is actuated, sending asignal to the control panel.Control panels, annunciators, light panels orother signalling devices can be used to warn ofa ruptured disc. The Alarm System is versatileto adapt to a variety of warning devices.Individual relay circuitry allows the user tomonitor several B.D.I. alarm strips at once.Pumps, valves, and other systems may also beactivated to respond to an overpressure orvacuum situation by the break of a specificalarm strip.DefinitionsAs used in the SB-100, BB-100A,BB400A and MTB-700 Alarm Monitordescriptions:*INTRINSICALLY SAFE is definedas:“Apparatus, including wiring,in which any spark or thermal effectproduced either normally or in specifiedfault conditions ... is incapable undertest conditions of causing ignition of aspecified mixture of flammable orcombustible material in air.”**FAIL SAFE, as generally acceptedby industry and the military: “If any onecomponent in the sensing sectionshould fail, the alarm must eithercontinue to work properly or activatethe alarm.”SpecificationsContinental's B.D.I. Alarm Monitorsare offered in five standard, “off theshelf” models (pictured on page 7,items 1, 2, 3, 4, and 6). Customizedalarm monitors, built to specification,are also available (pictured page 7,item 5). Features common to standardmodels SB-100, BB-100A, BB-400Aand LCB-400 are:• Terminals for 115/230 VAC@ 50 to 60 Hz or 12 VDC ± 1 voltpower input• Each relay has independentcommon terminals• Output relay contacts (one perchannel) rated as follows:2 AMPS @ 120 V Resistive1 AMP @120 V Inductive2 AMPS @ 24 V Inductive• Monitor box is intended for indooruse to provide a degree ofprotection against dust and drippingliquids• Operating temperature range:-40°F to 104°F (-40°C to +40°C)?Model SB-100 Alarm MonitorDesigned for wall mounting, theSB-100 has a front-mounted annunciatorpanel, incorporating audio and visualalarms. The unit features modularconstruction with all sensing and alarmrelays in one easily replaceable module.Specifications:• Monitors two discs separately andcontinuously• Intrinsically safe* signal output toB.D.I. Strip: 6 VDC @ 0.1 MA max• Latching mode only. Once the alarmis triggered, it must be resetmanually• Fail-safe** circuitry design for alarmsensing and activation circuitry• Contains easily replaceableincandescent alarm indicator lamps• Contains alarm buzzer, alarm mastertest switch, alarm master reset-acknowledge switchReplacement module for the SB-100Monitor: specify AF-100?Model BB-100A Alarm MonitorThe BB-100A Monitor is a wall mountdesign and provides information to theoperator's control panel. The unitfeatures modular construction with allsensing and alarm relays in one easilyreplaceable module.Specifications:• Monitors two discs separately andcontinuously• Intrinsically safe* signal output toB.D.I. Alarm Strip: 6 VDC @ 0.1 MAmax• Each channel can be set for latchingor non-latching circuitry, where alarmreset is handled manually orautomatically• Fail-safe** circuitry design for alarmsensing and activation circuitry• Intrinsically Safe*Replacement module for the BB-100AMonitor: specify NAF-100 ** Kapton and Teflon are registered trademarks of E.I. du Pont de Nemours and Company usedunder license.VARIOUS B.D.I. APPLICATIONSContinental ProductsSupplied with Integral FitB.D.I. Alarm StripFor the Integral Fit design, the copperstrip is adhered to a Teflon membranewhich has been formed to the sameconfiguration as the mating rupture disc.Then, the B.D.I. Membrane is perma-nently affixed to the rupture disc, usuallyon the downstream side. A strain braceis attached to the disc or the 3-D flowdirection tag to avoid damage to the stripextension.GRAFSERT Rupture DiscThe GRAFSERT® Rupture Disc is forapplications requiring resistance to mostcommercial chemicals.The B.D.I. Alarm Strip is permanentlymounted between the outlet side of therupture disc and the non-asbestosgasket.CAL-VAC / POS-A-SET Rupture DiscsCAL-VAC® Rupture Discs provideultra-low vacuum relief in addition topositive pressure relief. Vacuum reliefbegins as low as 1" water column.POS-A-SET® Rupture Discs provideultra-low positive pressure relief inaddition to vacuum relief. Positivepressure relief begins as low as 1" watercolumn.On both the CAL-VAC and thePOS-A-SET, the B.D.I. Alarm Strip ismounted directly to the Teflon seal. Upondisc rupture, in either direction, the alarmstrip activates a signal to the monitoringdevice.SANITRX Rupture DiscSANITRX® Rupture Discs are idealfor applications requiring reliableoverpressure protection for sanitarysystems, equipment andvessels. This disc isdesigned for operation up to 90% of thedisc's rated burst pressure.The B.D.I. Alarm Strip is mounteddirectly between the disc and thearcuate, passing out of the sanitaryclamping device through the boltopening.ENVIRO-SEAL Rupture DiscThe ENVIRO-SEAL is for systemsrequiring economical protection for lowpressure atmospheric storage vessels,downstream isolation of safety reliefvalves and protection of equipment fromcorrosive environments. It is designedfor operations at up to 50% ofrated burst pressure.The B.D.I. Alarm Strip is mounteddirectly to the outlet side of the rupturedisc.Vent PanelsVent Panels are designed to minimizestructural or mechanical damage thatmay be caused by expanding gasesresulting from the deflagration of dust,gases, or mists in equipment, rooms,buildings or other enclosures.The B.D.I. Alarm Strip is mounteddirectly to the outlet side of the ventpanel.Continental ProductsSupplied with UniversalB.D.I. Alarm StripThe Universal B.D.I. Alarm Stripincorporates a copper strip adhered to afull Teflon membrane and mountedbetween non-asbestos gaskets. TheUniversal design alarm strip is positionedon the downstream side of the holderoutlet when installed in service.MICRO X Rupture DiscThe MICRO X® Rupture Disc is across-scored tension type disc forsystems with normal operating pressuresup to 80-85% of the burst pressure ratingof the rupture disc.The Universal B.D.I. Alarm Strip ismounted to the outlet side of the holderoutlet.ULTRX®, MINTRX®, STAR X®, & LOTRX®Rupture DiscsThis unique family of semicircularscored reverse-acting rupture discs arefor liquid or gas systems with operatingpressures to 90% of the rupture discstamped rating and are superior forcyclic operating conditions.The Universal B.D.I. Alarm Strip ismounted to the outlet side of the holderoutlet. Contact the factory for availableconfigurations with the LOTRX RuptureDisc.RCS Rupture DiscThe RCS™ Rupture Disc is a cross-scored reverse-acting design disc for gasservice and 90% operating-to-burst ratio.The Universal B.D.I. Alarm Strip ismounted to the outlet side of the holderoutlet.KBA Rupture DiscThe KBA is for systems requiringexceptional burst accuracy and operatingpressures to 90% of the burst pressurerating on the rupture disc.The Universal B.D.I. Alarm Strip ismounted to the outlet side of the holderoutlet.ZAP Rupture DiscThe ZAP® Rupture Disc is for systemswhere conditions of pressure, pulsationsand cycles exist. It withstands operatingpressures up to 90% of the rupture discburst rating and backpressure to 110% ofthe disc rating.The Universal B.D.I. Alarm Strip ismounted to the outlet side of the holderoutlet.Continental ProductsSupplied with EitherIntegral Fit or UniversalB.D.I. Alarm StripStandard Rupture DiscThe Standard Rupture Disc is forsystems with normal operating pressuresup to 70% of the burst pressure rating ofthe rupture disc.The Integral Fit B.D.I. Alarm Strip isavailable for sizes 1-1/2" to 12" (40mm to300mm). All others use the UniversalB.D.I. Alarm Strip.Composite Rupture DiscThe Composite Rupture Disc is forsystems with operating pressures up to80% of the burst pressure rating of therupture disc. It is especially suitable forsystems requiring low pressure relief.An Integral Fit B.D.I. Strip is availablefor sizes 1-1/2" to 12" (40mm to 300mm).All other size Composite rupture discsuse a Universal B.D.I. Alarm Strip.4 5Available sizes and disc pressure ratings subject to material availabilityand conditions of the application. Consult factory for special applications.B.D.I. Alarm Strips can, in general, beapplied in any of the following holderclasses:150/300# ANSI ....................1" - 24"MSS SP-44 150# ..............28" - 36"DIN 10/16 ......................25mm - 900mmJIS 10/16 ......................25mm - 200mmUniversal StyleIntegral Fit DesignIntegralFit DesignUniversalStyleIntegral FitDesignUniversalStyleVARIOUS B.D.I. APPLICATIONSContinental ProductsSupplied with Integral FitB.D.I. Alarm StripFor the Integral Fit design, the copperstrip is adhered to a Teflon membranewhich has been formed to the sameconfiguration as the mating rupture disc.Then, the B.D.I. Membrane is perma-nently affixed to the rupture disc, usuallyon the downstream side. A strain braceis attached to the disc or the 3-D flowdirection tag to avoid damage to the stripextension.GRAFSERT Rupture DiscThe GRAFSERT® Rupture Disc is forapplications requiring resistance to mostcommercial chemicals.The B.D.I. Alarm Strip is permanentlymounted between the outlet side of therupture disc and the non-asbestosgasket.CAL-VAC / POS-A-SET Rupture DiscsCAL-VAC® Rupture Discs provideultra-low vacuum relief in addition topositive pressure relief. Vacuum reliefbegins as low as 1" water column.POS-A-SET® Rupture Discs provideultra-low positive pressure relief inaddition to vacuum relief. Positivepressure relief begins as low as 1" watercolumn.On both the CAL-VAC and thePOS-A-SET, the B.D.I. Alarm Strip ismounted directly to the Teflon seal. Upondisc rupture, in either direction, the alarmstrip activates a signal to the monitoringdevice.SANITRX Rupture DiscSANITRX® Rupture Discs are idealfor applications requiring reliableoverpressure protection for sanitarysystems, equipment andvessels. This disc isdesigned for operation up to 90% of thedisc's rated burst pressure.The B.D.I. Alarm Strip is mounteddirectly between the disc and thearcuate, passing out of the sanitaryclamping device through the boltopening.ENVIRO-SEAL Rupture DiscThe ENVIRO-SEAL is for systemsrequiring economical protection for lowpressure atmospheric storage vessels,downstream isolation of safety reliefvalves and protection of equipment fromcorrosive environments. It is designedfor operations at up to 50% ofrated burst pressure.The B.D.I. Alarm Strip is mounteddirectly to the outlet side of the rupturedisc.Vent PanelsVent Panels are designed to minimizestructural or mechanical damage thatmay be caused by expanding gasesresulting from the deflagration of dust,gases, or mists in equipment, rooms,buildings or other enclosures.The B.D.I. Alarm Strip is mounteddirectly to the outlet side of the ventpanel.Continental ProductsSupplied with UniversalB.D.I. Alarm StripThe Universal B.D.I. Alarm Stripincorporates a copper strip adhered to afull Teflon membrane and mountedbetween non-asbestos gaskets. TheUniversal design alarm strip is positionedon the downstream side of the holderoutlet when installed in service.MICRO X Rupture DiscThe MICRO X® Rupture Disc is across-scored tension type disc forsystems with normal operating pressuresup to 80-85% of the burst pressure ratingof the rupture disc.The Universal B.D.I. Alarm Strip ismounted to the outlet side of the holderoutlet.ULTRX®, MINTRX®, STAR X®, & LOTRX®Rupture DiscsThis unique family of semicircularscored reverse-acting rupture discs arefor liquid or gas systems with operatingpressures to 90% of the rupture discstamped rating and are superior forcyclic operating conditions.The Universal B.D.I. Alarm Strip ismounted to the outlet side of the holderoutlet. Contact the factory for availableconfigurations with the LOTRX RuptureDisc.RCS Rupture DiscThe RCS™ Rupture Disc is a cross-scored reverse-acting design disc for gasservice and 90% operating-to-burst ratio.The Universal B.D.I. Alarm Strip ismounted to the outlet side of the holderoutlet.KBA Rupture DiscThe KBA is for systems requiringexceptional burst accuracy and operatingpressures to 90% of the burst pressurerating on the rupture disc.The Universal B.D.I. Alarm Strip ismounted to the outlet side of the holderoutlet.ZAP Rupture DiscThe ZAP® Rupture Disc is for systemswhere conditions of pressure, pulsationsand cycles exist. It withstands operatingpressures up to 90% of the rupture discburst rating and backpressure to 110% ofthe disc rating.The Universal B.D.I. Alarm Strip ismounted to the outlet side of the holderoutlet.Continental ProductsSupplied with EitherIntegral Fit or UniversalB.D.I. Alarm StripStandard Rupture DiscThe Standard Rupture Disc is forsystems with normal operating pressuresup to 70% of the burst pressure rating ofthe rupture disc.The Integral Fit B.D.I. Alarm Strip isavailable for sizes 1-1/2" to 12" (40mm to300mm). All others use the UniversalB.D.I. Alarm Strip.Composite Rupture DiscThe Composite Rupture Disc is forsystems with operating pressures up to80% of the burst pressure rating of therupture disc. It is especially suitable forsystems requiring low pressure relief.An Integral Fit B.D.I. Strip is availablefor sizes 1-1/2" to 12" (40mm to 300mm).All other size Composite rupture discsuse a Universal B.D.I. Alarm Strip.4 5Available sizes and disc pressure ratings subject to material availabilityand conditions of the application. Consult factory for special applications.B.D.I. Alarm Strips can, in general, beapplied in any of the following holderclasses:150/300# ANSI ....................1" - 24"MSS SP-44 150# ..............28" - 36"DIN 10/16 ......................25mm - 900mmJIS 10/16 ......................25mm - 200mmUniversal StyleIntegral Fit DesignIntegralFit DesignUniversalStyleIntegral FitDesignUniversalStyleStorage/Silo TanksStorage tanks which damage easilyfrom overpressure or vacuum conditionsare protected with the CAL-VAC®Rupture Disc or POS-A-SET® RuptureDisc. Often these discs are located inhard-to-reach areas. The B.D.I. AlarmSystem warns immediately when therupture disc bursts.Distillation EquipmentDistilled products must be free fromcontamination. Operator warning is vitalwhen a product batch is contaminatedfrom the intake of an outside atmosphereduring vacuum relief. The B.D.I. AlarmSystem provides the needed warning.The Heart of the System:The B.D.I. Alarm StripThe Burst Disc Indicator Alarm Strip isdesigned to break when its correspond-ing rupture disc bursts. This creates anopen circuit which is detected by theB.D.I. Alarm Monitor, or other suitablemonitoring 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)ComponentsThe B.D.I. Alarm Strip is composed ofcopper conductors adhered to a thinstrip of Kapton®** film. Tantalumconductors are available for someapplications. The tail of the strip,extending from the rupture disc seatingarea to the B.D.I. Connector, is protectedwith polyolefin heat shrink tubing. Astrain brace is attached to most designsto prevent undue stress to the B.D.I.Alarm Strip and premature alert.Each B.D.I. Alarm Strip is carefullyadhered to a Teflon®** membrane toinsure proper breakage upon discrupture. Care is also taken to positionthe alarm strip where it will be grippedproperly by the rupture disc flangeswithout crushing the conductors. Thisdesign prevents the B.D.I. system fromsignaling prematurely upon installation.The B.D.I. Alarm Strip is manufacturedas either an Integral Fit or a Universaldesign, dependent upon the rupture discproduct it is to mate with. Refer to photoon page 4-5 for examples. It iscompatible with assemblies designed toinstall between flange bolting classesincluding ANSI, DIN, JIS, BSI andsanitary clamping designs. Customdesigns are also available. Contact thefactory for details.Linking the B.D.I. Alarm Strip to themonitoring system is the B.D.I.Connector. A two-pin bullet terminal withO-rings protects the terminals at theconnecting point against moisture. It isabrasion resistant, flexible, and highlyweather-resistant, even in sub-zeroclimates.The Interconnecting Leadwirebetween the B.D.I. Connector and amonitor or junction box is unfinished onone end to permit connection dictated bylocal electrical codes. It is available instandard lengths from 6 ft. to 500 ft.(1.8m to 152m).To protect the tail of the B.D.I. AlarmStrip, each comes with a LeadwireStrain Relief Device. This deviceprevents undue stress on the alarm stripby securing the B.D.I. InterconnectingLeadwire in place.OptionWhen there is a distance of 15 feet ormore between the B.D.I. Alarm Strip andthe monitoring device, a junction box isrecommended. This box protects thealarm strip from the weight of the longcable and from environmental elements.Shielded cable (such as blue Beldon#8412 cable) should be used for cableruns between a junction box and theB.D.I. Alarm Monitor, to preventtriggering of a false alarm. If the cable isrun through conduit, a less expensivecable (such as Beldon #8441instrumentation cable) can be used.3From LeadwireFromB.D.I. StripOpen end availablein various lengthsSanitary Design HolderInsert Design AssemblyB.D.I. ALARM MONITORS6Burst Disc Indicator Alarm MonitorsThe B.D.I. Alarm System uses a normallyclosed electrical circuit. A continuous signalflows between the B.D.I. Alarm Strip and theAlarm Monitor under normal conditions. Oncethe rupture disc bursts, the Alarm Strip breaks,opening the electrical circuit.Each Continental B.D.I. Monitor containsreplaceable modules with individual channelrelays. Each channel relay connects to oneAlarm Strip. As the rupture disc and B.D.I. stripbreak, a specific relay is actuated, sending asignal to the control panel.Control panels, annunciators, light panels orother signalling devices can be used to warn ofa ruptured disc. The Alarm System is versatileto adapt to a variety of warning devices.Individual relay circuitry allows the user tomonitor several B.D.I. alarm strips at once.Pumps, valves, and other systems may also beactivated to respond to an overpressure orvacuum situation by the break of a specificalarm strip.DefinitionsAs used in the SB-100, BB-100A,BB400A and MTB-700 Alarm Monitordescriptions:*INTRINSICALLY SAFE is definedas:“Apparatus, including wiring,in which any spark or thermal effectproduced either normally or in specifiedfault conditions ... is incapable undertest conditions of causing ignition of aspecified mixture of flammable orcombustible material in air.”**FAIL SAFE, as generally acceptedby industry and the military: “If any onecomponent in the sensing sectionshould fail, the alarm must eithercontinue to work properly or activatethe alarm.”SpecificationsContinental's B.D.I. Alarm Monitorsare offered in five standard, “off theshelf” models (pictured on page 7,items 1, 2, 3, 4, and 6). Customizedalarm monitors, built to specification,are also available (pictured page 7,item 5). Features common to standardmodels SB-100, BB-100A, BB-400Aand LCB-400 are:• Terminals for 115/230 VAC@ 50 to 60 Hz or 12 VDC ± 1 voltpower input• Each relay has independentcommon terminals• Output relay contacts (one perchannel) rated as follows:2 AMPS @ 120 V Resistive1 AMP @120 V Inductive2 AMPS @ 24 V Inductive• Monitor box is intended for indooruse to provide a degree ofprotection against dust and drippingliquids• Operating temperature range:-40°F to 104°F (-40°C to +40°C)?Model SB-100 Alarm MonitorDesigned for wall mounting, theSB-100 has a front-mounted annunciatorpanel, incorporating audio and visualalarms. The unit features modularconstruction with all sensing and alarmrelays in one easily replaceable module.Specifications:• Monitors two discs separately andcontinuously• Intrinsically safe* signal output toB.D.I. Strip: 6 VDC @ 0.1 MA max• Latching mode only. Once the alarmis triggered, it must be resetmanually• Fail-safe** circuitry design for alarmsensing and activation circuitry• Contains easily replaceableincandescent alarm indicator lamps• Contains alarm buzzer, alarm mastertest switch, alarm master reset-acknowledge switchReplacement module for the SB-100Monitor: specify AF-100?Model BB-100A Alarm MonitorThe BB-100A Monitor is a wall mountdesign and provides information to theoperator's control panel. The unitfeatures modular construction with allsensing and alarm relays in one easilyreplaceable module.Specifications:• Monitors two discs separately andcontinuously• Intrinsically safe* signal output toB.D.I. Alarm Strip: 6 VDC @ 0.1 MAmax• Each channel can be set for latchingor non-latching circuitry, where alarmreset is handled manually orautomatically• Fail-safe** circuitry design for alarmsensing and activation circuitry• Intrinsically Safe*Replacement module for the BB-100AMonitor: specify NAF-100 ** Kapton and Teflon are registered trademarks of E.I. du Pont de Nemours and Company usedunder license.Continental Rupture Discswith the B.D.I.®* Alarm SystemThe Continental B.D.I. (Burst DiscIndicator) Alarm System is designedspecifically for use with ContinentalRupture Discs. It signals the operator ofa system when a rupture disc has burstto relieve an overpressure condition.The heart of the system is the B.D.I.Alarm Strip. Upon disc rupture, the BurstDisc Indicator Alarm Strip is severed,disrupting the flow of electric currentthrough the strip. An attached alarmmonitor can then transmit a warningand/or activate appropriate equipment.The B.D.I. Alarm System should bespecified:• When warning of pressure relief isessential for plant safety• When immediate notice is needed ofrelief of an overpressure or vacuumcondition to indicate processmalfunction• When indication is vital that a rupturedisc has burst and toxic substancesare venting• When emergency equipment mustbe triggered immediately upon discrupture to alter or stop a process• When loss or contamination ofproduct will occur if a rupture disc isnot replaced immediately• When monitoring of rupture discs isimportant in hard-to-reach locationsProven DesignThe Burst Disc Indicator Alarm Strip isdesigned to break when its correspond-ing rupture disc bursts. Continental'sdesign has been proven through years oftesting, both in the field and in our ASMEaccepted flow testing laboratory. Thistesting has proved the reliability of theAlarm Strip when used with ContinentalRupture Discs. The B.D.I. Alarm Stripdoes not affect the life or performance ofthe rupture disc.The Continental B.D.I. Alarm Strip iscarefully designed and manufacturedwith the following features in mind:• Resistant to chemicals and weather• Usable over a wide range oftemperatures• Easily replaceable upon disc rupture• Compatible with standard designContinental Rupture DiscsATEX Directive CompliantThe B.D.I. Alarm Strip and theMTB-700 Alarm Monitor have beencertified for use in “potentially explosiveatmospheres” according to therequirements of the European Union,ATEX Directive 94/9/EC. ATEX typeapproval and quality assurancenotification certificates are available onour website at www.contdisc.com.Typical ApplicationsRupture disc applications which canincorporate the B.D.I. Alarm System areunlimited. They occur in all majorindustries—anywhere quick notice of anoverpressure or vacuum condition andrelease is required.Relief ValvesIsolating relief valves with a rupturedisc protects internal valve parts fromcorrosive media. The B.D.I. AlarmSystem signals when a disc rupturerelieves an overpressure condition,enabling the operator to correct theprocess and restore protection to therelief valve.Installing a rupture disc with a B.D.I.Alarm Strip on the outlet side of a reliefvalve notifies the operator when a valvehas relieved. This is an especiallyimportant application when handlingtoxic or corrosive substances.Processing VesselsRupture discs with the B.D.I. AlarmSystem are used on processing tanksand vessels requiring protection fromoverpressure or vacuum conditions. Thesystem warns when a disc ruptures.Chemical ReactorsWhen processing temperatures andpressures are critical, the B.D.I. AlarmSystem gives immediate warning whenservice is interrupted due to relief of anoverpressure condition.Tank TransportsThe B.D.I. Alarm System signalsimmediately when a rupture disc hasburst, thereby releasing product to theatmosphere.Pipeline Pumping StationsRupture discs relieve pressure buildupin pumping stations caused by blockedpipelines. The system signals as reliefoccurs and can trigger shutdown ofpumping systems.Fermentation VesselsProducts requiring gaseous blanketsto prevent spoilage or productcontamination must be protected fromthe atmosphere. Immediate warning ofdisc rupture permits quick correctiveaction, reducing loss of product andexpensive gases.?Model BB-400A Alarm MonitorThe BB-400A Monitor is a largerversion of the BB-100A. It uses thesame replaceable sensing and alarmrelays module, but it can accommodatefour modules for a total of eight differentrupture discs, monitored individually andcontinuously.Specifications:• Identical to Model BB-100A• Intrinsically Safe*Replacement module for the BB-400AMonitor: specify NAF-100?Model LCB-400 Alarm MonitorThe LCB-400 is designed for usewhere an intrinsically safe* sensor signalis not required. The unit is a wall mountdesign and provides information to theoperator's control panel. It featuresmodular construction with eight easilyreplaceable modules.Specifications:• Monitors eight discs separately andcontinuously• Highly regulated low current signaloutput to disc: 12 VDC @ 0.5 MAmaxReplacement module for the LCB-400Monitor: specify LCAF-100?Custom Built MonitorCustom designed alarm monitors areavailable for specific applications, suchas the two-channel unit pictured. Contactthe factory for details.?MTB-700 Alarm MonitorThe MTB-700 Monitor incorporatesIntrinsically Safe Galvanically IsolatedBarriers, approved for use in manycountries worldwide. Upon disc rupture,these barriers activate signals and/oroutput relays to warn operators andactuate pumps, valves, or otherequipment connected to the system.The unit is modular in construction,and can be purchased with a single MTLtwo-channel barrier, or it can beupgraded to four channels. Eachchannel features one DPDT relay forauxiliary contacts, capable of operating a1/8 HP motor at 120/240VAC for amaximum carrying current of 7 AMPS.When purchased with an annunciatorpanel, the monitor provides both visualand auditory warning capabilities. Themonitor may also be tested and resetfrom a remote location, i.e. control room,laboratory, etc.Specifications:• 100% galvanically isolated barriers• 2 channels, expandable to 4• Supply voltage: 24 VDC,120/240 VAC• With or without annunciator panel• Maximum intrinsically safe outputlevel: 7 VDC @ 22 MA• Latching mode on all channels• Intrinsically safe barrier approvals:USA (Factory Mutual): Class I, II& III: Division I, Groups A-GUK (BASEEFA): [EEx ia] IIcAustralia (SA): [EEx ia] IIcDenmark (DEMKO): [EEx ia] IIcFinland (SETI): [EEx ia] IIcCanada (CSA): Class I, II & III:Division I, Groups A-GJapan (RIIS): 3aG6• Operating temperature range:-20°C (-4°F) to 45°C (113°F)• Enclosure Nema ratings4, 4X, 12 and 13B.D.I. ALARM MONITOR SPECIFICATIONS7??????Annunciatoror Control PanelAnnunciatoror Control PanelB.D.I.ALARM MONITORB.D.I.ALARM MONITOROPENSTATEVisualWarningAudioWarningConnectorOptionalSwitchingConnectionLeadwireNORMALCLOSEDSTATEB.D.I.ALARMSTRIPBURST DISC INDICATOR2B.D. I . A L A RM S Y S T EM• O P E R A T I N G S C H E M A T I C •Continental Disc Corporation has representatives located throughout the world.Contact the C.D.C. office nearest you for the authorized representative in your area.Rupture Discs withB.D.I.® Alarm System 5-7701-5Continental Disc Corporation reserves the right to alter the information in this publication without notice. Printed in U.S.A.Reproduction without written permission prohibited. © 1983 - 2010 Continental Disc Corporation COR0623 10/10THE NETHERLANDSContinental Disc CorporationEnergieweg 202382 NJ Zoeterwoude-RijndijkThe NetherlandsPhone: + (31) 71-5412221FAX: + (31) 71-5414361E-mail: cdcnl@contdisc.comCHINAContinental Disc CorporationRoom 910, Tower B, COFCO PlazaNo. 8 JianGuoMenNei AvenueBeijing (100005), P.R. ChinaPhone: + (86) 10-6522-4885Fax: + (86) 10-6522-2885Mobile: + (86) 137-0103-8871E-mail: cdcchina@contdisc.comINDIAGroth Continental Mfg. Pvt. Ltd.Survey No. 423/P, MahagujaratIndustrial Estate, Moraiya, Sarkhej-Bavla Road, Ahmedabad 382213,INDIAE-mail: gcmpl@contdisc.comCORPORATE HEADQUARTERSContinental Disc Corporation3160 W. Heartland DriveLiberty, MO 64068-3385 USAPhone: (816) 792-1500FAX: (816) 792-2277 / 5447E-mail: pressure@contdisc.comWebsite: www.contdisc.comPressure Equipment DirectiveAvailable When SpecifiedChina Manufacture LicenseAvailable When SpecifiedASME Code Symbol StampAvailable When Specified