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Document No.: 11253Revision: 01-Oct-2012

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2100 System

CONFIGURATION

A 2100 System consists of:

•Onetofivemodules—Model2120BStrainGageConditioner/Amplifier(twochannels/module)

•OneModel2110BPower Supply

•OneModel2150RackAdapter

OR

•Oneortwomodules—Model2120BStrainGageConditioner/Amplifier(twochannels/module)

•OneModel2110BPowerSupply•OneModel2160BPortableFour-ChannelEnclosure

ADDITIONAL DETAILS

•Aseparate bridge power switchremovesbridgeexcitation,excitation,enablingtheoperatortodetectunwantedsignalsduetoelectricalinterferenceand/ornoise,thermocoupleeffects,andshiftsoftheinstrumentzeroduringalong-termtest.Thisfeatureisanabsolutemustfordynamictesting,andforvalidatingtest results.

•Anadjustable bridge excitation control on each channelpermitsexcitationtobesetasspecifiedbythestraingageortransducermanufacturer.Italsoallowsforanyspecialconsiderationwhichmaybedictatedbythetestmaterial;forexample,thepoorthermalconductivitynormallyassociatedwithplastics.

• Inadditiontoadjustablebridgeexcitation,eachchannelhas its own regulator circuit.Thispreventsinteractionofadjacentchannelsduringsetuporoperation.

•Eachchannelhasacontinuously variable gain control.Incombinationwithrecommendedexcitation,theindependentgaincontrolcanprovidealargeoutputsignalsothatsmallsignalscanberesolvedwithoutoverpoweringthestraingageortransducer.

•AnLED display for each channel gives positive indicationofamplifierandresistivebalance.Thiscapabilityacceleratessetupandverifiestension/compressionloading.

•Easilyreadreference marks on the setup meter indicateacceptablelinevoltageandproperoperationofinternal power supplies.

•AswitchcontainedintheModel2110BPowerSupplyallowsadjustmentwhentheline voltage is too high or too low.

•The2100Systemprovidestrue quarter-bridge, three-leadwire capability,includinginternaldummiesandsufficientplugconnectionsforremoteshuntcalibration.

•AconvenientnetworkintheModel2120BStrainGageConditioner/Amplifierallows the operator to change the factory-supplied shunt values, as well as shunt anyarmofthebridge,asrequired.

FEATURES

•Acceptsfull,half,orquarterbridges;allbridge-completiongagesbuiltin,including120/1000-and350-ohmdummies

•Fullyadjustableandregulatedbridgeexcitationoneachchannel;upto12VDCbyfront-panelcontrol

•Continuouslyvariableamplifiergainupto2100byfront-panel control

•Separatebridge-powerswitch•Output10VDCat100mA,short-circuit-proofandcurrentlimitingstandard

•LEDnullindicatorsprovidedoneachchanneltoindicateamplifierandbridge-balancecondition

•Highstabilitywithtemperatureandtime•Frequencyresponseupto50kHz•Directchannel-by-channeldisplayofdata,withoptionalpeakhold/retentioncapability

DESCRIPTION

Thedemandsoftoday’smeasurementapplicationsaremoreexactingthaneverbefore.Aninstrumentationsystemmustprovidedurabilityandversatility,reliabilitywitheaseofoperation,andeconomywithnosacrificeofaccuracy.

The2100Systemwasengineeredwithalloftheserequirementsinmind,andtoprovideadurable,multi-channelsignalconditioner/amplifiersystemcapableofperformingequallywellinawidevarietyoftestapplicationsandenvironments.Andthe2100Systemhas proven itself through applications ranging from measurements on the ocean floor to testing of the space shuttle.

The2100Systemacceptslow-levelsignals,andconditionsandamplifiesthemintohigh-leveloutputssuitableformultiple-channelsimultaneousdynamicrecording.The2100Systemiscompatiblewithstripcharts,magnetictapeandX-Yrecorders.

Straingage,load/pressuretransducerandnickeltemperaturesensorinputscanbehandledbythe2100 System without any rewiring.

Animportantdesignobjectiveachievedisminiaturizationofthesystemwhilemaintainingadequatespacingaroundthe front-panel controls. All operational controls are locatedonthefrontpanelformaximumsetupefficiency.Frequentlyusedcontrolsarefinger-operated,whileinitialsetupadjustmentsaremadethroughthefrontpanelwithascrewdriver.

Continuouslyvariableamplifiergainisachievedviaalockingten-turnconcentric-dialcountingknob,whichpermitsresettingtoapredeterminedvalueforrepeatingroutine tests.

Acombinationofintegratedcircuitsanddiscretecomponentsassuresmaximumperformanceandeaseofserviceatthelowestpossibleprice.

Signal Conditioning Amplifier

Document No.: 11253Revision: 01-Oct-2012

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Micro-Measurements

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2100 System

Document No.: 11253Revision: 01-Oct-2012

SignalConditioningAmplifier

MODEL 2120B STRAIN GAGE CONDITIONER AMPLIFIERAtwo-channelplug-inamplifiermodulethatincludesbridgecompletion,bridgebalance,amplifierbalance,bridgeexcitationregulator,andshuntcalibration.

LED DISPLAY Setup/Indicator for amplifierbalance, bridge balance, tension/compression

BRIDGE BALANCEResistively balances the bridge;standard locking knob; digital locking knob (”K” option)

GAIN RANGE AND VERNIERVaries amplifier gain between1–2100

BRIDGE EXCITATIONVaries bridge excitationbetween 0.5–12 VDC

AMPLIFIER BALANCEAdjusts amplifier offset

SHUNT CALIBRATION(2 points)

BRIDGE EXCITATION (on/off)Removes bridge excitation

Front Panel

STRAIN GAGE/TRANSDUCER INPUTQuarter, half, and fullbridge

OUTPUT ±10 VDC, ±100 mA

POWER RECEPTACLE

Rear Panel

SPECIAL PORTION OF PRINTED CIRCUIT BOARDFOR SHUNT CALIBRATION RESISTORS AND JUMPERS

SPECIFICATIONS

Allspecificationsinthisdatasheetarenominalortypicalat+23°Cunlessnoted.Performancemaybedegradedinthepresenceofhigh-levelelectromagneticfields.

InputsQuarter(120Ω/1000Ωand350Ω),halfandfullbridge (50-1000Ω).Quarter-bridgedummygagesprovided.

Bridge Excitation0.5to12VDC(adjustableforeachchannel)with120Ω full-bridgeload.Short-circuit current: <40 mARipple,noise,and10%linechange:±2mVmax.Loadregulation:±0.2%no-loadto120Ωload(10%linechange)

Bridge Balance±2000με(quarter,half,or350Ωfullbridge),rangecanbechangedbyinternaljumperto±4000μεor±6000με

CalibrationTwo-position(centeroff)toggleswitchStandardfactory-installedresistors(±0.1%)simulate ±1000μεatGF=2

Amp Gain1to2100continuouslyadjustable±1%.

BandpassDCto5kHz(min):-0.5dB(-5%)DCto15kHz:-3dBCanbeextendedbyinternaljumperto:DCto17kHz:-0.5dBDCto50kHz:-3dB

Amp Input

Temperature coefficient of zero ±1μV/°CRTI*,±210μV/°CRTO** -10°Cto+60°C(after30minutewarm-up)

Noise RTI: (350Ω source impedance) 1μVp-pat0.1Hzto10Hz 2μVp-pat0.1Hzto100Hz 2μVRMSat0.1Hzto50kHz

*Referredtoinput **Referredtooutput

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Micro-Measurements

Document No.: 11253Revision: 01-Oct-2012

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2100 System

SignalConditioningAmplifier

Noise RTO 50μVp-pat0.1Hzto10Hz 80μVp-pat0.1Hzto100Hz 100μVRMSat0.1Hzto15kHz 200μVRMSat0.1Hzto50kHz

Input Impedance >100MΩ(balancelimitresistor disconnected)

Common-Mode Rejection (DCto60Hz)

GainMultiplier CMR(dB)

X2 67

X20 87

X200 100

Source Current ±10nAtypical;±40nAmax.

Ouput±10V(min)at±100mA Current limit: 140 mA

Size5.25Hx2.94Wx10.97Din(133x75x279mm)

Weight 2.2lb(1.0kg)

MODEL 2110B POWER SUPPLY

Aplug-inmodulecapableofpoweringuptotenchannels(fiveModel2120Bmodules)atamaximumratedvoltage or current.

Providesinitialbridgeandamplifiervoltages.Allsupplies arecurrent-limitedagainstamplifiermalfunction.

BRIDGE-VOLTS METER Used to set up/monitor bridge excitation, also lineand power supply levels

CHANNEL SELECTORAC monitors ac line input.DC monitors the power supplies. Positions 1–10select and display bridgeexcitation for each channel

PILOT LAMP Indicates main power

POWER SWITCHMain power on-off

EXTERNAL METERUsed with an external digital voltmeter to precisely adjust bridge excitation

SPECIFICATIONS

Ouputs±15Vat1.2Aand+17.5Vat1.1A;allregulatorscurrent-limitedagainstoverload

Input107,115,214,230VAC±10%50/60Hz(selectedinternally)Power:40Wtypical,100Wmax.

Meter0to12VDC(withswitch)toreadbridgeexcitation.AlsoACinputandDCoutputgo/no-gomonitor

Size5.25Hx2.44Wx12.34Din(133x62x313mm)

Weight6.7lb(3.1kg)

MODEL 2150 RACK ADAPTER

AprewiredrackadapterwhichacceptsoneModel2110BanduptofiveModel2120BStrainGageConditionerAmplifiers.Ithasitsownfuseandpowercordandcanbehousedinanystandard19-in(483-mm)electronicequipment rack.

Power2-ft(0.6-m)3-wirelinecord;10-ft(3-m)extensionavailableFuse:1Asize3AG(32x6.5dia.mm)Receptacletoacceptlinecordfromadjacent2150RackAdapter

Size5.25Hx19Wx14.17Din(133x483x360mm)

Weight6.6lb(3.0kg)

LINE CORDAUXILIARY RECEPTACLE FUSE

MODEL 2150 FRONT

MODEL 2150 REAR

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2100 System

Document No.: 11253Revision: 01-Oct-2012

SignalConditioningAmplifier

MODEL 2160B PORTABLE FOUR-CHANNEL ENCLOSURE

Model 2160:Aprewired,fusedenclosurewhichhousesuptothree(3)modules.Acarryinghandleensuresmaximumportability.Anadditionalsnap-downbailsupportonthebottomcanbeusedtoelevatethe2160forexcellentworkefficiencyduringbench-topoperation.TheModel2160wouldbesubstitutedfortheModel2150whentwoorfourchannelsandmaximumportabilityarerequired.

SPECIFICATIONS

Size5.55Hx8.75Wx13.80Din(141x222x350mm)

Weight5.2lb(2.4kg)

Vishay Precision Group, Inc.

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Document No.: 63999Revision: 15-Jul-2014

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