LineGuard 2100Electronic LinebreakDetection System

Operating Principle

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Description

The Lineguard 2100 samples pressure and calculatesa Rate of Pressure Drop (ROD) from the pressure sam-ples. The LineGuard 2100 samples readings taken every5 seconds and calculates an average pressure. The num-ber of pressure samples, or averaging rate, contained inthe moving pressure average can be configured from 1 to12 readings and defines the window used to filter instan-taneous variations of the analog readings.

The Lineguard continuously monitors pipeline pressureand detects static pressure conditions and ROD condi-tions. These configurable conditions are classified asMajor and Minor event conditions. The Lineguardkeeps a log of pressure and ROD at regular configurableintervals when these events are detected. It also initiatesvalve closure if the Major event persists for a pre-deter-mined length of time, exceeding an Event Duration setpoint. The valve closure may be selectively disabled,depending on the source of the major event. A date andtime stamped Event and Alarm log is also kept inmemory.

Minor Event A Minor Event is active when the pres-sure being measured exceeds the H press set point orthe L press set point configured in the control, or whenthe Rate of Pressure Drop being calculated exceeds theH ROD set point configured in the control.

Major Event A Major Event is active when the pres-sure being measured exceeds the HH press set point orthe LL press set point configured in the control, or whenthe Rate of Pressure Drop being calculated exceeds theHH ROD set point configured in the control.

Valve closure after a major event requires a systemreset to re-open the line valve and resume data logging.This can be done by either a site visit or remote com-mand using SpectraCom software and the DIP switch.

The solenoid to close or open (when applicable) canbe energized by command from a remote location inorder to change the pipeline valve position. This event is

recorded in the audit log. If required, the solenoid(s) canbe de-energized at the end of each actuator stroke, as isthe case for Gas/Hydraulic operators. The LineGuard2100 can be configured to provide a solenoid lockout fea-ture to safeguard against remote manual re-opening ofthe valve after a major event. For further protection theLineGuard 2100 does not have any automatic openingcapability.

The LineGuard 2100 includes safeguards to preventunwarranted pipeline valve movement due to internal cir-cuit faults, power faults, power surges or unnaturaldestruction such as lightning or immersion.

The LineGuard 2100 Electronic Linebreak Detection Sys-tem is a self-contained pipeline monitoring and linebreakprotection device intended to be installed at a pipelinevalve site and is designed to provide data acquisition and

supervisory control of a single valve actuator. The Line-Guard 2100 guards your pipeline in three ways rate ofpressure drop, low pressure protection and high pressureprotection. Further, it records data for future analysis.

Archival Data StorageSix types of archival logs are stored in the battery

backed 128-K memory of the Lineguard.Audit Logs This log contains old and new values for

changes to any configurable item including time of changeof parameter and date of changed parameter. The Line-Guard 2100 can store up to 100 operator/audit logs

Alarm Logs This log contains a complete summaryof all alarm or error conditions affecting measurement,including each alarm type and the date and time of thealarm, and the alarm status i.e. active or cleared, currentvalue and the limit value exceeded. The LineGuard 2100can store up to 200 alarm logs.

Minor Pressure Log A minor pressure log consists ofdate and time at the start of a Minor Event followed by 60pressure values. A minor pressure log proceeds until all 60values have been recorded even if the condition returns tonormal. This log can store up to 100 records before data isoverwritten.

Minor ROD Log Same as previous log except rate ofpressure values are logged.

Major Pressure Log The major pressure log consistsof date and time at the start of a Major Event followed by30 pressure values before the major event and 30 pressurevalues after the event. A major pressure log proceeds untilall 60 values have been recorded. The Lineguard storesone Major Pressure log.

Major ROD Log Same as previous log except rate ofpressure values are logged.

Time DelayThe LineGuard 2100 has a selectable Event Duration

period, configurable from 30 seconds to 5 minutes. TheEvent Duration delay safeguards against false closure dueto intermittent pressure surges or drops.

The LineGuard 2100 offers selectable solenoid deactiva-tion control at end of stroke. This is available for both thevalve open or valve close commands and is configurable upto 5 minutes.

HardwarePressure Transducer

A temperature compensated transducer, which will corre-spond with the line pressure ranges to 5,000 psig, is mount-ed inside the enclosure. An optional pressure transducer isavailable for the Lineguard but must be externally mountedaway from the enclosure.

Solenoid ValveThe standard LineGuard 2100 is supplied with one intrin-

sically safe solenoid valve, manifold mounted with the coiland valve body inside the enclosure. As an option, the Line-

guard 2100 may be specified with an additional solenoidvalve for local or remote opening commands. The solenoidis rated for a fluid and ambient temperature range of -40Cto +60C (-40F to +140F)CPU

The polyurethane-coated main CPU board offers the fol-lowing features: Plugable terminals for external connections of 24 to 12

AWG A backup battery to maintain volatile memory Battery voltage status monitor and alarm A DIP switch array to allow for control reset Protection from false closures due to lightning strikes

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Pressure Logs

Design Features

Minor PressureRecord 1 = 13:20:55 10/30/98

Major PressureRecord 31 = 13:20:55 10/30/98

Time (30 Second Intervals)

Time (30 Second Intervals)

4Flash Memory The flash ram has a minimum total of256-KB memory for storing code and non-volatile data.

Static Ram The static ram has a minimum total of256-KB memory for storing code, programmed data and logdata. This data is backed up by a battery with a 10 yearservice life.

Inputs The CPU board has 4 digital inputs. These areconfigured to accept up to 4 SPDT limit switch contacts foractuator position indication.

Auxiliary Analog Inputs Two auxiliary analog inputs(1 to 5 VDC) are provided suitable for remote mount pres-sure transducer interfaces.

Outputs The CPU board has 4 digital outputs. Twooutputs are configured with open drain FETs to providecontact closure to operate 2 solenoid valves. One opticallyisolated output is available to drive a low power relay orannunciator panel.

Power SupplyMain Battery An internal battery pack can be sup-

plied in the event commercial line power is not available.For non-rechargeable applications the battery pack is a dualAlkaline 6V DC lantern type designed for a service life of 12

months, based on an internal transducer and a maximum of24, two minute solenoid operations. A low battery voltagecondition is logged in the operator change log as a warningfor replacement.

Backup Battery A special non-rechargeable 3.6 VLithium battery is included for memory backup. This batterycan be replaced without memory loss if the primary powersource is active.

Solar Panel In the event that a solar panel is suppliedfor rechargeable battery applications, a 12V DC or 6V DClead-acid or Gel cell battery pack will be supplied.

Commercial Line Power, Communication PowerSource or TEG The LineGuard 2100, as an option, willaccept external power at 24 VDC, when available. An inter-nal non-rechargeable main battery will also be optional witha switchover to maintain control in the event that the hardwire power source is interrupted or lost. All external powersources must be suitably protected for Class 1, Div. 2,Group D intrinsically safe.

ROD Logs

Minor R.O.D.Record 1 = 13:20:55 10/30/98

Major R.O.D.Record 31 = 13:20:55 10/30/98

Time (30 Second Intervals)

Time (30 Second Intervals)

Design Features

The LineGuard 2100 is housed in a lockable epoxy coat-ed corrosion resistant NEMA 4X (IP65) aluminum enclosureto provide protection for dependable operation in polar,saline and tropical environments from -40C to +85C (-40F to +185F) and humidity of 0% to 95%, non-con-densing. The front panel LCD display is operational from -20C to +70C (-4F to +158F).

Front Panel User Interface The front panel interfaceconsists of a flat, vinyl-sealed, touchpad type 3-key set. Thekeys pause and scroll the display data and allow manualadjustment of the display contrast.

Display The 2 line, 16 characters per line, reflectiveLCD display can be configured to scroll programmed andlive data including current line pressure and rate of pres-sure change (ROD). The scrolling rate is controlled by thefirmware. Automatic contrast adjustment is provided.

Entries The enclosure is provided with individualelectrical entries on the bottom surface for solenoid valves,limit switches, pressure transducer, solar panel cable, exter-nal power cable, remote communication port, and localcommunication port (Cannon connector).

Enclosure

CommunicationThe LineGuard 2100 has two RS232 serial communica-

tion ports, one of which is on a CPU mounted terminalblock for hard wire tie-in to a remote host computer andthe other wired to a Cannon connector mounted on theenclosure. A 9-pin D type connector and 25 foot cable issupplied, suitable for hooking up a local portable device tothe Cannon connector. Either of these communicationports is suitable for loading or collecting configuration orstored data or moving the pipeline valve. The data transferrate is configurable with a default minimum of 9600 Baud.Communication may be accepted at any time and will notinterfere with normal operations.

The standard communication protocol is DANIEL/ENRONMODBUS ASCII. Operation with alternate protocols maybe available by request. The LineGuard 2100 has fullRTS/CTS handshaking functionality on the remote ortelemetry port.

Multidrop Application A device to allow multidropapplication using the RS-232 serial communication port isavailable as an optional piece of equipment.

SoftwareThe standard software supplied with the LineGuard

2100 is Daniel SpectraCom, compatible with any Windows

95 or Windows NT 4.0, IBM compatible 486 computer,VGA 600 X 800. This software is designed for configuringthe LineGuard 2100 and allows easy sorting and viewingof collected data.

Remote and Local Data Uploads The LineGuard2100 allows a host device to upload live and logged dataand accept configuration commands via the serial commu-nication ports.

Positive Unit Identification The LineGuard 2100allows for programming of a unique, numeric identificationnumber such as the location ID and unit ID. An identifier,such as the Modbus designation 1 to 254, can be used toconfirm a particular unit before data is transferred or valvemovement commands are accepted.

Password Protection and Security Password pro-tection security for configuration and data uploads with upto 15 levels of authorization will be provided only with theSpectraCom software. End user-provided software(SCADA) must be provided with all password protectionand authorization.

Live and Test Inputs The LineGuard 2100 can beconfigured to read pressure inputs from Live inputs orTest inputs, for testing of the unit without a pressuretransducer.

Data Transfer

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DimensionsHeight: 30.48 cm (12 in.)Width: 30.48 cm (12 in.)Depth: 16.51 (6.5 in.)Weight: 4.0 to 7.4 kg (8.5 to 16.2 lb),depending on transducer selected.

Certification and ContractsThe complete LineGuard 2100 is tested (certification

pending) to the latest ULC standard for intrinsically safeelectrical equipment for use in Class I, Division 2, GroupD hazardous locations. The LineGuard 2100 will alsomaintain FCC Part 15 compliance.

DocumentationThe LineGuard 2100 will be supplied with documenta-

tion including: Field wiring diagram, component parts list and interface

cable assembly drawing Comprehensive installation and maintenance manual Installation procedure system commissioning checklist Detailed software instructions and a troubleshooting

guide

HeadquartersP.O. Box 508Waller, TX 77484U.S.A.Tel: 281/463-5100Fax: 281/463-5103Bettis Canada Ltd.4112-91 A StreetEdmonton, Alberta T6E 5V2CanadaTel: 780/450-3600Fax: 780/450-1400

Western Canada Sales620, 400 - 5th Avenue, S.W.Calgary, Alberta T2P 0L6CanadaTel: 403/266-1422Fax: 403/266-1602Bettis UK Ltd.Brunel WayFareham, Hampshire PO15 5SAEnglandTel: 0148-988-5333Fax: 0148-988-5200Tlx: 47493

Bettis France30/36 Allee du Plateau93250 VillemombleFranceTel: 48 12 26 10Fax: 48 12 26 19

Shafer ValveOperating Systems2500 Park Avenue WestMansfield, OH 44906U.S.A.Tel: 419/529-4311Fax: 419/529-3688

1999. Bettis Corporation. All rights reserved.BET99001/5m/3-99

Bulletin No. 44.00

Important: Due to Bettis continuing commitment to engineeredproduct advancement, data presented herein is subject to change.

Reg. Firm 93-13Bettis Canada Ltd.Edmonton, Alberta

Accredited bythe Dutch Councilfor Certification

The Company

Bettis has been providing quality valve actuation andcontrol for more than 40 years, establishing itself as apioneer and innovator in this industry, with productsspecifically engineered to your application. Today, we arethe worlds leading independent manufacturer of pneu-matic and hydraulic valve actuators. Bettis products areused in almost every facet of the energy industry oiland gas production, pipeline and processing. Our head-

quarters near Houston, Texas has more than 145,000square feet of manufacturing capacity. We also operatemodern manufacturing facilities in Edmonton, Canada;Fareham, England; Mansfield and Cincinnati, Ohio; Esb-jerg, Denmark and Villemomble, France. Bettis has beenawarded the ISO 9001 designation indicating full compli-ance with worldwide standards for quality and documen-tation.

ISO 9001

Standards & Documentation