dam safety monitoring inhydro
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DAM SAFETY MONITORING INDAM SAFETY MONITORING INHYDROHYDRO
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CRACK& JOINT METERSCRACK& JOINT METERS
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JOINT METERJOINT METER
ApplicationApplication
Jointmeter is designed for use acrossJointmeter is designed for use acrossconstruction joint such as those betweenconstruction joint such as those betweenadjacent blocks in a concrete dam.adjacent blocks in a concrete dam.
It is normally embedded across the joint toIt is normally embedded across the joint tomonitor the expansion or contraction of themonitor the expansion or contraction of the
joint.joint. The use of internal universal joint allows for aThe use of internal universal joint allows for a
degree of shearing motion.degree of shearing motion.
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(A )JOINT METER(A )JOINT METER
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( B )( B )STRAND METERSTRAND METER
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STRAND METERSTRAND METER
APPLICATION :APPLICATION :--
Strandmeter is designed to measure strains inStrandmeter is designed to measure strains intendons and steel cable.tendons and steel cable.
Two clamps at each end of the strandmeterTwo clamps at each end of the strandmeter
hold it firmly on to the cable .hold it firmly on to the cable . Various size clamps are availableVarious size clamps are available
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CRACK& JOINT METERCRACK& JOINT METER
APPLICATION:APPLICATION:--
Crackmeteris intendedtomeasuremovementCrackmeteris intendedtomeasuremovementacross surfacecrackand joints.across surfacecrackand joints.
Itis installed by grouting ,orbondingtwoItis installed by grouting ,orbondingtwo
threadedanchors (with balljoint) on oppositethreadedanchors (with balljoint) on oppositesides ofthecrackandthan attachingtheendssides ofthecrackandthan attachingtheends
ofthe gagetotheanchors.ofthe gagetotheanchors.
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(C) CRACK&JOINT METER(C) CRACK&JOINT METER
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MINIATURECRACKMETERMINIATURECRACKMETER
APPLICATION:APPLICATION:--
MiniaturecrackmeterintendedtomeasureMiniaturecrackmeterintendedtomeasuredisplacements across surfacecrackanddisplacements across surfacecrackandjoints.joints.
Ithas been specially designedforapplicationsIthas been specially designedforapplications
whereaccess is limitedwheremonitoringwhereaccess is limitedwheremonitoringinstrumentation is to beas unobtrusiveasinstrumentation is to beas unobtrusiveaspossible.possible.
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(D ) MINIATURECRACKMETER(D ) MINIATURECRACKMETER
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CONVERGENCE METERCONVERGENCE METER
APPLICATION:APPLICATION:--
CONVERGENCE METER IS USED TO MONITORCONVERGENCE METER IS USED TO MONITORCLSURES IN UNDERGROUND EXCAVATION ,CLSURES IN UNDERGROUND EXCAVATION ,
TUNNELS , ETC.TUNNELS , ETC.
IT ISCOMPRISED OF A SPRING TENSIONEDIT ISCOMPRISED OF A SPRING TENSIONEDTRANSDUCER, TURNBUCKLE, CONNECTING ROD (TRANSDUCER, TURNBUCKLE, CONNECTING ROD (
STAINLESS STEEL,FIBERGLASS OR GRAPHITE) RODSTAINLESS STEEL,FIBERGLASS OR GRAPHITE) ROD
CLAMP, AND A PAIR OF STAINLESS STEEL EYECLAMP, AND A PAIR OF STAINLESS STEEL EYEBOLTS.BOLTS.
TRANSDUCER LENGTH:TRANSDUCER LENGTH:-- 360 TO 1260 MM360 TO 1260 MM
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(E ) CONVERGENCE METER(E ) CONVERGENCE METER
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LONG RANG DISPLACEMENTLONG RANG DISPLACEMENT
METERMETER APPLICATION:APPLICATION:--
Is ideally suitedforthemeasurementoflargeIs ideally suitedforthemeasurementoflargedisplacements associatedwithlandslides.displacements associatedwithlandslides.
Can also be usedformonitoringtheCan also be usedformonitoringthemovementofboulder, snowetc, on unstablemovementofboulder, snowetc, on unstable
slopes.slopes.
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(F) LONG RANG DISPLACEMENT(F) LONG RANG DISPLACEMENT
METERMETER
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SOIL STRAINMETER WITHSOIL STRAINMETER WITH
FLANGED ENDSFLANGED ENDS APPLICATION:APPLICATION:--
Is designedtomeasurelongitudinaldeformation inIs designedtomeasurelongitudinaldeformation in
damandembankments.damandembankments.
Itcan also be groutedorheld in place by hydraulicItcan also be groutedorheld in place by hydraulicanchors tomeasure deformations in boreholes (anchors tomeasure deformations in boreholes (
overthe gagelength ).overthe gagelength ).
Gagelengthfrom 0.5 to 100 metersGagelengthfrom 0.5 to 100 meters ..
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(G) SOIL STRAINMETER WITH(G) SOIL STRAINMETER WITH
FLANGED ENDSFLANGED ENDS
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DISPLACEMENT TRANSDUCERDISPLACEMENT TRANSDUCER
APPLICATION:APPLICATION:--
Is provides remotereadoutcapabilityforboreholeIs provides remotereadoutcapabilityforborehole
extensometers.extensometers. They areparticularly usefulwhereothertypes ofThey areparticularly usefulwhereothertypes ofvibratingwire sensors are usedand /orforvibratingwire sensors are usedand /orforinstallations wherelongruns arerequired.installations wherelongruns arerequired.
Can also be installed between conjunction withtheCan also be installed between conjunction withtherequisitelengthconnectingrod, toprovidearequisitelengthconnectingrod, toprovideapermanent, in place incrementalextensometer.permanent, in place incrementalextensometer.
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(H ) DISPLACEMENT(H ) DISPLACEMENT
TRANSDUCERTRANSDUCER
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EXTENSOMETERSEXTENSOMETERS
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FlexiblerodextensometerFlexiblerodextensometer
Application:Application:--
Flexibleextensometeruses continuousFlexibleextensometeruses continuous--specifiedlengths offiberglass rods (in sidespecifiedlengths offiberglass rods (in side
protectivetubing), cuttoarequirement.protectivetubing), cuttoarequirement.
Theextensometeris lightweight, making itTheextensometeris lightweight, making iteasiertohandleforinstallation .easiertohandleforinstallation .
Maximumlength :Maximumlength :-- 100 meters.100 meters.
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(A) FLEXIBLE ROD(A) FLEXIBLE ROD
EXTENSOMETEREXTENSOMETER
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(B) RETRIEVABLE(B) RETRIEVABLE
EXTENSOMETEREXTENSOMETER
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DIFFERENT TYPE OF ANCHORSDIFFERENT TYPE OF ANCHORS
APPLICATION:APPLICATION:--
A)A) Borros typehydraulicanchor:Borros typehydraulicanchor:-- Foruse in softForuse in soft
soils andclays, especially in augered boreholes.soils andclays, especially in augered boreholes.
B)B) Groutableanchor:Groutableanchor:-- ThepreferredanchorforuseThepreferredanchorforuse
in downwardin downward--directed boreholes. Thepreassembleddirected boreholes. Thepreassembledextensometeris installed in the boreholeand is thenextensometeris installed in the boreholeand is then
filledwithcementgrout.filledwithcementgrout.
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Cont.Cont.
C)C) Hydraulicanchor:Hydraulicanchor:-- Foruse in roughForuse in roughboreholes in rockand softground,especiallyboreholes in rockand softground,especiallyifdilations andcontractions ofthe boreholeifdilations andcontractions ofthe borehole
areanticipated .areanticipated .
D)D) SnapSnap--ringanchor:ringanchor:-- Foruse in hardorForuse in hardor
competentrockwhere smooth uniformcompetentrockwhere smooth uniformboreholes can be drilled. The simplicity oftheboreholes can be drilled. The simplicity ofthedesign allows forquickandeasy installation.design allows forquickandeasy installation.
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(C) DIFFERENT TYPES OF(C) DIFFERENT TYPES OF
ANCHORSANCHORS
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HEAVE/SETTLEMENT POINTSHEAVE/SETTLEMENT POINTS
APPLICATION:APPLICATION:--
Is tomeasureverticalmovements inIs tomeasureverticalmovements infoundation soils duringand subsequenttofoundation soils duringand subsequenttoconstruction.construction.
Theheave/settlementpointconsists ofathreeTheheave/settlementpointconsists ofathreepronganchor, inch standard innerpipe,pronganchor, inch standard innerpipe,anda 1inch standardouterpipe.anda 1inch standardouterpipe.
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(D) HEAVE/SETTLEMENT POINTS(D) HEAVE/SETTLEMENT POINTS
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TYPES OF MEASUREMENTSTYPES OF MEASUREMENTS
A) Digitaldepthmicrometer:A) Digitaldepthmicrometer:-- ReadoutofReadoutof
boreholeextensometers is madeon a digitalboreholeextensometers is madeon a digital
counteraftermanualadjustmentofthecounteraftermanualadjustmentofthe
thimble.thimble.
B) Dailindicator:B) Dailindicator:-- UsedforquickandeasyUsedforquickandeasy
readoutofboreholeextensometers. Accuracyreadoutofboreholeextensometers. Accuracy
is 0.01 mm, standardrange is 50 mm.is 0.01 mm, standardrange is 50 mm.
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Cont.Cont.
C) Linearpotentiometer:C) Linearpotentiometer:-- Utilizes a sturdy 6.5 mmUtilizes a sturdy 6.5 mm
diameterrodwhichprotrudesfrom bothends as thediameterrodwhichprotrudesfrom bothends as the
actuating shaft.This also useformechanicalcheckactuating shaft.This also useformechanicalcheck
on thereadings.on thereadings.
D) VW DisplacementTransducer:D) VW DisplacementTransducer:-- Is providesIs provides
remotereadoutforextensometers.They areremotereadoutforextensometers.They are
particularly usefulwhereothertypes ofVW sensorsparticularly usefulwhereothertypes ofVW sensors
are usedandwherelongcableruns arerequired.are usedandwherelongcableruns arerequired.
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(E) TYPES OF MEASUREMENTS(E) TYPES OF MEASUREMENTS
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TAPE EXTENSOMETERTAPE EXTENSOMETER
APPLICATION:APPLICATION:--
Is designedtomeasure smallchanges in the distanceIs designedtomeasure smallchanges in the distancebetween oppositewalls orbetween theroofandfloorofbetween oppositewalls orbetween theroofandfloorofexcavations, tunnels, ormineopenings.excavations, tunnels, ormineopenings.
Itcan also usedtomonitordeformation in structures andItcan also usedtomonitordeformation in structures andsupports andtomeasuremovements ofunstable slopes.supports andtomeasuremovements ofunstable slopes.
Readoutis providedelectronically viaafrontpanelLCD.Readoutis providedelectronically viaafrontpanelLCD.
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MAGNETICEXTENSOMETERMAGNETICEXTENSOMETER
APPLICATION:APPLICATION:--
Is designedtomeasure settlementorheaveofsoftIs designedtomeasure settlementorheaveofsoft
ground underthe influenceofloadingorunloadingground underthe influenceofloadingorunloadingduetotheconstruction ofembankments ,fills,duetotheconstruction ofembankments ,fills,buildings,foundations, and structures.buildings,foundations, and structures.
Aprobe is lowered insideatelescoping guidetubetoAprobe is lowered insideatelescoping guidetubeto
detectandmeasuretheposition ofmagneticdetectandmeasuretheposition ofmagneticanchors locatedaroundthe guidetubeatvariousanchors locatedaroundthe guidetubeatvariousdepths alongthe boreholeorwith in thefill.depths alongthe boreholeorwith in thefill.
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(G) MAGNETICEXTENSOMETER(G) MAGNETICEXTENSOMETER
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INCLINOMETERSINCLINOMETERS
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INCLINOMETER PROBEINCLINOMETER PROBE
APPLICATION:APPLICATION:--
Is used in conjunction with inclinometercasingforthemeasurementofIs used in conjunction with inclinometercasingforthemeasurementoflateralearthmovements whichmightoccurin unstable slopes, landlateralearthmovements whichmightoccurin unstable slopes, landslides, damandroadway embankments, andlandfills.slides, damandroadway embankments, andlandfills.
They arealso usedtomeasure deflections in thewalls ofexcavation,They arealso usedtomeasure deflections in thewalls ofexcavation,shafts, tunnels, and in caissons ,piles and sheetpiling.shafts, tunnels, and in caissons ,piles and sheetpiling.
Theprobeconsists ofawaterproofstainless steelhousingcontainingtwoTheprobeconsists ofawaterproofstainless steelhousingcontainingtwoforceforce--balanced servobalanced servo--accelerometers withan outputoffivevolts at30accelerometers withan outputoffivevolts at30
degree.degree.
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INCLINOMETER PROBEINCLINOMETER PROBE
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SPIRAL INDICATORSPIRAL INDICATOR
APPLICATION:APPLICATION:--
Is uses aflexIs uses aflex--gatemagnetometertomeasureanygatemagnetometertomeasureany
spiralingofinclinometercasing.spiralingofinclinometercasing.
The 6005 is lowered intothecasingon theendofThe 6005 is lowered intothecasingon theendofstandard inclinometercableconnectedtothe GKstandard inclinometercableconnectedtothe GK--603 inclinometerreadoutbox.603 inclinometerreadoutbox.
The instrumentprovides a directreadingoftheThe instrumentprovides a directreadingofthecasing grooves atany pointalongthecasingcasing grooves atany pointalongthecasing..
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HORIZONTAL INCLINOMETERHORIZONTAL INCLINOMETER
APPLICATION:APPLICATION:--
Horizontalinclinometeris measures differentialHorizontalinclinometeris measures differential
settlementalongthelengthofthecasing.settlementalongthelengthofthecasing.
Standardrange ;Standardrange ;-- ++ -- 53 DEGREE.53 DEGREE.
Casing size I.D 61 TO 89 MM.Casing size I.D 61 TO 89 MM. Temperaturerange :Temperaturerange :-- 0 degreeto + 50 degree0 degreeto + 50 degree..
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INCLINOMETER DATAINCLINOMETER DATA
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BOREHOLE PRESSURECELLSBOREHOLE PRESSURECELLSMEASUREMENTSMEASUREMENTS
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BOREHOLE PRESSURECELLBOREHOLE PRESSURECELL
APPLICATION:APPLICATION:--
Is usedtomeasurerockstress changes and isIs usedtomeasurerockstress changes and isdesignedtothe grouted insidea borehole.designedtothe grouted insidea borehole.
The BPCis manufacturedfromtwo steelplatesThe BPCis manufacturedfromtwo steelplatesweledtogetheraroundtheirperiphery.weledtogetheraroundtheirperiphery.
Theplates are deformed intoadog boneTheplates are deformed intoadog boneconfiguration sothatthey can beexpandedeasilyconfiguration sothatthey can beexpandedeasilywithoutdamagetothewelds.withoutdamagetothewelds.
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Cont.Cont.
Hydraulicoilfills the space between thetwoHydraulicoilfills the space between thetwoplates andhighplates andhigh--pressure stainless steeltubepressure stainless steeltube
connects theplates toa stainless steelconnects theplates toa stainless steel
pressure gageand/orapressuretransducer.pressure gageand/orapressuretransducer.
Sizeofborehole:Sizeofborehole:-- 57mm.57mm.
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A. BOREHOLE PRESSURECELLA. BOREHOLE PRESSURECELL
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VIBRATING WIRE BOREHOLEVIBRATING WIRE BOREHOLE
STRESSMETERSSTRESSMETERS
APPLICATION:APPLICATION:--
Are designedtomeasure stress changes in rockandAre designedtomeasure stress changes in rockand
can be installed in boreholes upto 100 feetdeep.can be installed in boreholes upto 100 feetdeep.
The stressmeterconsists ofahigh strength steelThe stressmeterconsists ofahigh strength steel
provingringwedgedtightly across one diameterprovingringwedgedtightly across one diameterinsidea boreholeandavibratingwiretensionedinsidea boreholeandavibratingwiretensioned
across theotherdiameterinsidethe stressmeter.across theotherdiameterinsidethe stressmeter.
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Cont.Cont.
Changes in rockstress causearelatedChanges in rockstress causearelatedchange in theresonantfrequency ofvibrationchange in theresonantfrequency ofvibration
ofthetensionedwireprovidingoutputwhichofthetensionedwireprovidingoutputwhich
is read by thereadoutbox.is read by thereadoutbox.
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B. VIBRATING WIRE BOREHOLEB. VIBRATING WIRE BOREHOLE
STRESSMETERSTRESSMETER
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VIBRATING WIRE BIAXIALVIBRATING WIRE BIAXIAL
STRESSMETERSTRESSMETER APPLICATION:APPLICATION:--
Is designedtomeasurecompressive stress changes in rock,Is designedtomeasurecompressive stress changes in rock,salt, concreteorice.salt, concreteorice.
Threeorsixvibratingwire sensors orientedat60 degreeThreeorsixvibratingwire sensors orientedat60 degreeinternals allowtheprincipalstress changes to bemeasuredinternals allowtheprincipalstress changes to bemeasuredin theplaneperpendiculartothe stressmeteraxis.in theplaneperpendiculartothe stressmeteraxis.
The stressmeterconsists ofahigh strength steelcylinderThe stressmeterconsists ofahigh strength steelcylinderwhich is grouted in toa BX 60mm size borehole.which is grouted in toa BX 60mm size borehole.
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C. VIBRATING WIRE BIAXIALC. VIBRATING WIRE BIAXIAL
STRESSMETERSTRESSMETER
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VIBRATING WIRE SISCVIBRATING WIRE SISC
BOREHOLE STRESSMETERBOREHOLE STRESSMETER APPLICATION:APPLICATION:--
The SISCis preThe SISCis pre--loaded by wedging itintoalargeloaded by wedging itintoalargesize diamond drillhole usingan integralscrewsize diamond drillhole usingan integralscrewmechanismorhydraulicpiston andcan be settomechanismorhydraulicpiston andcan be settomeasure bothtensileand/orcompression stressmeasure bothtensileand/orcompression stresschanges.changes.
Ithas been used successfully in 152 mm diameterIthas been used successfully in 152 mm diameterovercoringholes tomeasure Aggregate/Alkaliovercoringholes tomeasure Aggregate/AlkaliReactions in concrete damsReactions in concrete dams..
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C. VIBRATING WIRE SISCC. VIBRATING WIRE SISC
BOREHOLE STRESSMETERBOREHOLE STRESSMETER
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D. CONCRETE STRESSMETERD. CONCRETE STRESSMETER
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BOREHOLE DEFORMATIONBOREHOLE DEFORMATION
GAGEGAGE
APPLICATION:APPLICATION:--
Usedtomeasure in situ rockstresses usingUsedtomeasure in situ rockstresses usingtheovercoringtechnique in rockthatistheovercoringtechnique in rockthatiscompetentandelastic.competentandelastic.
Itis also usefulfordeterminingthe inherentItis also usefulfordeterminingthe inherentstability ofpitslopes, foundation excavations,stability ofpitslopes, foundation excavations,minepillars andabutments.minepillars andabutments.
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E. BOREHOLE DEFORMATIONE. BOREHOLE DEFORMATION
GAGEGAGE
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SETTLEMENT SYSTEMSETTLEMENT SYSTEM
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SETTLEMENT SYSTEMSETTLEMENT SYSTEM
APPLICATION:APPLICATION:--
Is designedfortheremotemeasurementofsurfaceorIs designedfortheremotemeasurementofsurfaceorsubsurface settlementin fills, surchanges, dams,subsurface settlementin fills, surchanges, dams,
embankments, etc.embankments, etc.
A borehole is drilledwhichallows apressuretransducertoA borehole is drilledwhichallows apressuretransducertobeanchoredto solid ground belowtheareaofsettlement.beanchoredto solid ground belowtheareaofsettlement.
Afluidfilledtubeextends upwardconnectingthetransducerAfluidfilledtubeextends upwardconnectingthetransducertoareservoirwhich is located in themoving strataorfill.toareservoirwhich is located in themoving strataorfill.
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Cont.Cont.
Themeasurementoffluidpress indicates theThemeasurementoffluidpress indicates the
elevation difference between the sensorandtheelevation difference between the sensorandthe
reservoir.reservoir.
This design eliminates the needforlongliquidfilledThis design eliminates the needforlongliquidfilledtubes.tubes.
Standard Ranges :Standard Ranges :-- 7,17,35 meters.7,17,35 meters.
Temperature Ranges :Temperature Ranges :-- _20 degreeto + 80 degree._20 degreeto + 80 degree.
LengthLength diameter:diameter:-- 305305 60 mm(reservoir), 19160 mm(reservoir), 191
35 mm(sensor)35 mm(sensor)
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A .SETTLEMENT SYSTEM.A .SETTLEMENT SYSTEM.
PRESSURE TRANSDUCERPRESSURE TRANSDUCER
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PRESSURE TRANSDUCERPRESSURE TRANSDUCER
ATTACHED TO A SETTLEMENTATTACHED TO A SETTLEMENT
PLATEPLATE APPLICATION:APPLICATION:--
The settlementplatelocated in the settling ground.The settlementplatelocated in the settling ground.
The sensoris connecting , viatwofluidfilledtubes extendingThe sensoris connecting , viatwofluidfilledtubes extendinglaterally, toareservoirlocatedon firm groundawayfromthelaterally, toareservoirlocatedon firm groundawayfromtheareaofanticipatedmovement.areaofanticipatedmovement.
Fluidpressurewithin thetubes is sensed by thetransducerFluidpressurewithin thetubes is sensed by thetransducerwhichprovides ameasureoftheelevation difference betweenwhichprovides ameasureoftheelevation difference betweenthe sensorandthereservoir.the sensorandthereservoir.
Thetubes areflushThetubes areflush--able.able.
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Cont.Cont.
Standard Ranges:Standard Ranges:-- 7, 17meter.7, 17meter. Temperature Ranges :Temperature Ranges :-- --20 degreeto +8020 degreeto +80
degree.degree.
LengthLength diameter:diameter:-- 152152 51 mm51 mm(reservoir), 191(reservoir), 191 35 mm(sensor)35 mm(sensor)
B PRESSURE TRANSDUCERB PRESSURE TRANSDUCER
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B. PRESSURE TRANSDUCERB. PRESSURE TRANSDUCER
ATTACHED TO A SETTLEMENTATTACHED TO A SETTLEMENT
PLATEPLATE
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C. SETTLEMENT PROFILERC. SETTLEMENT PROFILER
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HIGH SENSITIVITYHIGH SENSITIVITY
SETTLEMENT SYSTEMSETTLEMENT SYSTEM APPLICATION:APPLICATION:--
Consists ofa series ofvessels containingliquidlevelConsists ofa series ofvessels containingliquidlevelsensors interconnected by aliquidfilledtube.sensors interconnected by aliquidfilledtube.
A referencevesselis positionedata stable benchA referencevesselis positionedata stable benchmarklocation withadditionalvesselspositionedatmarklocation withadditionalvesselspositionedatdifferentlocation atapproximately the samedifferentlocation atapproximately the sameelevation.elevation.
The differentialsettlementorheave between anyThe differentialsettlementorheave between anyvesselandthereferencevesselresults in anvesselandthereferencevesselresults in anapparentriseorfalloftheliquidlevelin thatvessel.apparentriseorfalloftheliquidlevelin thatvessel.
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PRECISION SETTLEMENTPRECISION SETTLEMENT
MONITORING SYSTEMMONITORING SYSTEM
APPLICATION:APPLICATION:--
Systemwas designedtomeasure differentialSystemwas designedtomeasure differential
settlements withavery high degreeofsettlements withavery high degreeof
accuracy andresolution, making itsuitableaccuracy andresolution, making itsuitable
forapplications ofahighly criticalnatureforapplications ofahighly criticalnature
wheretheexpected settlementare small.wheretheexpected settlementare small.
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E. PRECISION SETTLEMENTE. PRECISION SETTLEMENT
MONITORING SYSTEMMONITORING SYSTEM
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STRAIN GAGESTRAIN GAGE
MEASUREMENTMEASUREMENT
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A. STRAIN GAGEA. STRAIN GAGE
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B. FIBER OPTICSTARIN GAGEB. FIBER OPTICSTARIN GAGE
C DYNAMIC STARINC DYNAMIC STARIN
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C. DYNAMICSTARINC. DYNAMICSTARIN
TRANSDUCERTRANSDUCER
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D. STRAIN GAGED. STRAIN GAGE
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E. MODIFIED STRAIN GAGEE. MODIFIED STRAIN GAGE
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F. STRAIN GAGESF. STRAIN GAGES
G HIGH TEMPERATUREG HIGH TEMPERATURE
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G. HIGH TEMPERATUREG. HIGH TEMPERATURE
EMBEDMENT STRAIN GAGEEMBEDMENT STRAIN GAGE
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H. REBAR STRAINMETERH. REBAR STRAINMETER
I FIBER OPTIC REBARI FIBER OPTIC REBAR
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I. FIBER OPTIC REBARI. FIBER OPTIC REBAR
STRAINMETERSTRAINMETER
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EARTH PRESSURECELLSEARTH PRESSURECELLS
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A. EARTH PRESSURECELLA. EARTH PRESSURECELL
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B. ANOTHER PRESSURECELLB. ANOTHER PRESSURECELL
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C. JACKOUT PRESSURECELLC. JACKOUT PRESSURECELL
D JACKOUT PRESSURE CELLD JACKOUT PRESSURE CELL
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D. JACKOUT PRESSURECELLD. JACKOUT PRESSURECELL
HYDRAULICHYDRAULIC
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E. INTERGRAL PIEZOMETERE. INTERGRAL PIEZOMETER
F NATM STYLE SHOTCRETEF NATM STYLE SHOTCRETE
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F. NATM STYLE SHOTCRETEF. NATM STYLE SHOTCRETE
STRESSCELLSSTRESSCELLS
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G. LOAD CELLG. LOAD CELL
H VIBRATING WIRE STRAINH VIBRATING WIRE STRAIN
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H. VIBRATING WIRE STRAINH. VIBRATING WIRE STRAIN
GAGEGAGE
I VIBRATING WIREI VIBRATING WIRE
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I. VIBRATING WIREI. VIBRATING WIRE
TRANSDUCERTRANSDUCER
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DATALOGGERSDATALOGGERS
A SINGLE CHANNELA SINGLE CHANNEL
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A. SINGLECHANNELA. SINGLECHANNEL
DATALOGGERDATALOGGER
B MULTI CHANNELB MULTI CHANNEL
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B. MULTICHANNELB. MULTICHANNEL
DATALOGGERDATALOGGER
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C. 16 CHANNEL DATA LOGGERC. 16 CHANNEL DATA LOGGER
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D. DATA COLLECTIOND. DATA COLLECTION
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E. MEASUREMENT & CONTROLE. MEASUREMENT & CONTROL
F INTERFACE TO READF INTERFACE TO READ
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F. INTERFACE TO READF. INTERFACE TO READ
VIBRATING WIRE SENSORVIBRATING WIRE SENSOR
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G. MULTIPLEXERG. MULTIPLEXER
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H. DATA ACQUISITIONH. DATA ACQUISITION
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I. DATA STORAGEI. DATA STORAGE
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