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  <xsd:element abstract="true" id="itri_DefinedContributionBonusAndProfitSharingAbstract" name="DefinedContributionBonusAndProfitSharingAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="itri_DocumentInformationAbstract" name="DocumentInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
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  <xsd:element id="itri_EffectOfChangeInExchangeRatesUnrecognizedTaxBenefit" name="EffectOfChangeInExchangeRatesUnrecognizedTaxBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
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  <xsd:element id="itri_ExcessTaxBenefitsFromEmployeeStockPlanExercises" name="ExcessTaxBenefitsFromEmployeeStockPlanExercises" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
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  <xsd:element abstract="true" id="itri_GasOperatingSegmentMember" name="GasOperatingSegmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="itri_GoodwillExcludingNonGoodwillIntangiblesAbstract" name="GoodwillExcludingNonGoodwillIntangiblesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_HealthBenefitPlanCostsAndIncurredButNotReportedAccrualBalanceTableTextBlock" name="HealthBenefitPlanCostsAndIncurredButNotReportedAccrualBalanceTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="itri_LongTermPerformanceRestrictedStockAwardMember" name="LongTermPerformanceRestrictedStockAwardMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="itri_MachineryAndEquipmentComputersAndSoftwareAndFurnitureMember" name="MachineryAndEquipmentComputersAndSoftwareAndFurnitureMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element id="itri_OtherAmountsRecognizedInOtherComprehensiveIncomeBeforeTax" name="OtherAmountsRecognizedInOtherComprehensiveIncomeBeforeTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="itri_OtherCountriesMember" name="OtherCountriesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="itri_OutsideUnitedStatesMember" name="OutsideUnitedStatesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element id="itri_OwnershipInterestToUseCostMethod" name="OwnershipInterestToUseCostMethod" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_OwnershipInterestToUseEquityMethod" name="OwnershipInterestToUseEquityMethod" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_PercentageOfBenefitPlansDenominatedInEuroDomain" name="PercentageOfBenefitPlansDenominatedInEuroDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_PercentageOfEmployerMatchIntoEmployeeSavingsPlan" name="PercentageOfEmployerMatchIntoEmployeeSavingsPlan" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="itri_PropertyPlantAndEquipmentPolicyAdditionalInformationAbstract" name="PropertyPlantAndEquipmentPolicyAdditionalInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
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  <xsd:element id="itri_RestructuringPercentCash" name="RestructuringPercentCash" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="itri_RestructuringPercentFacilityClose" name="RestructuringPercentFacilityClose" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="itri_RestructuringPercentSeveranceClose" name="RestructuringPercentSeveranceClose" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="itri_RestructuringProjectLineItems" name="RestructuringProjectLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_RestructuringProjectTable" name="RestructuringProjectTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_ScheduleOfAssetsAndLiabilitiesAcquiredInBusinessCombinationLineItems" name="ScheduleOfAssetsAndLiabilitiesAcquiredInBusinessCombinationLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_ScheduleOfAssetsAndLiabilitiesAcquiredInBusinessCombinationTable" name="ScheduleOfAssetsAndLiabilitiesAcquiredInBusinessCombinationTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_ScheduleOfBonusAndProfitSharingPlansAndAwardExpenseTableTextBlockTableTextBlock" name="ScheduleOfBonusAndProfitSharingPlansAndAwardExpenseTableTextBlockTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_ScheduleOfChangesInBenefitObligationAndFairValueOfPlanAssetsTableTextBlock" name="ScheduleOfChangesInBenefitObligationAndFairValueOfPlanAssetsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_ScheduleOfChangesToUnearnedRevenueForExtendedWarrantyTableTextBlock" name="ScheduleOfChangesToUnearnedRevenueForExtendedWarrantyTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_ScheduleOfIntangibleAssetsAbstract" name="ScheduleOfIntangibleAssetsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_ScheduleOfLongTermDebtRepaymentsTableTextBlock" name="ScheduleOfLongTermDebtRepaymentsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_ScheduleOfRevenuesAndEarningsAttributableToAcquiredBusinessTableTextBlock" name="ScheduleOfRevenuesAndEarningsAttributableToAcquiredBusinessTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_ScheduleOfShareBasedPaymentAwardRestrictedStockUnitsValuationAssumptionsTableTextBlock" name="ScheduleOfShareBasedPaymentAwardRestrictedStockUnitsValuationAssumptionsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="itri_ScheduledQuarterlyRepaymentsSeptember2018throughMarch2020Domain" name="ScheduledQuarterlyRepaymentsSeptember2018throughMarch2020Domain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_ScheduleofPurchasePriceAllocation1TableTextBlock" name="ScheduleofPurchasePriceAllocation1TableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_SettlementgainorlossMember" name="SettlementgainorlossMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierLowerRangeLimit" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierLowerRangeLimit" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierUpperRangeLimit" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierUpperRangeLimit" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeLowerRangeLimit" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeLowerRangeLimit" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeUpperRangeLimit" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeUpperRangeLimit" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedLowerRangeLimit" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedLowerRangeLimit" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedUpperRangeLimit" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedUpperRangeLimit" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_ShareRepurchasePlanAbstract" name="ShareRepurchasePlanAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_ShareRepurchasePolicyPolicyTextBlock" name="ShareRepurchasePolicyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_ShorterDurationEuroDenominatedDefinedBenefitPlansMember" name="ShorterDurationEuroDenominatedDefinedBenefitPlansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_SignificantNonRecurringProFormaAdjustmentsNetOfEstimatedTax" name="SignificantNonRecurringProFormaAdjustmentsNetOfEstimatedTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_StockIncentivePlanMember" name="StockIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_SummaryOfAllowanceForDoubtfulAccountsActivityAbstract" name="SummaryOfAllowanceForDoubtfulAccountsActivityAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_SummaryofintangibleassetaccountactivityTableTextBlock" name="SummaryofintangibleassetaccountactivityTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_TaxCutsandJobsActDomain" name="TaxCutsandJobsActDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_TaxEffectOfExcessBenefitsFromEmployeeStockPlanExercisesWhichWillIncreaseOurCommonStockWhenItReducesOurCashTaxesPayableAndWhichIsNotRecognizedInOurDeferredTaxAssets" name="TaxEffectOfExcessBenefitsFromEmployeeStockPlanExercisesWhichWillIncreaseOurCommonStockWhenItReducesOurCashTaxesPayableAndWhichIsNotRecognizedInOurDeferredTaxAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="itri_TaxProvisionBenefitAbstract" name="TaxProvisionBenefitAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_ThresholdforReportingCustomerConcentrationMember" name="ThresholdforReportingCustomerConcentrationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_TotalIntangibleAssetsAbstract" name="TotalIntangibleAssetsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_TypeOfEmployeeBenefitAndCompensationDomain" name="TypeOfEmployeeBenefitAndCompensationDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_UndistributedEarningsofForeignSubsidiariesandForeignCorporateJointVenturesMember" name="UndistributedEarningsofForeignSubsidiariesandForeignCorporateJointVenturesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_UnitedStatesAndCanadaMember" name="UnitedStatesAndCanadaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_UnrestrictedStockAwardsCompensationExpense" name="UnrestrictedStockAwardsCompensationExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_UnsecuredMulticurrencyRevolvingLinesOfCreditMember" name="UnsecuredMulticurrencyRevolvingLinesOfCreditMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_UsdDenominatedTermLoanMember" name="UsdDenominatedTermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_VestedAndReleasedMember" name="VestedAndReleasedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_VestedButNotReleasedMember" name="VestedButNotReleasedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_Warranty" name="Warranty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="itri_WarrantyCharge" name="WarrantyCharge" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="itri_WarrantyExpense" name="WarrantyExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="itri_WarrantyExpenseTableTextBlock" name="WarrantyExpenseTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="itri_WarrantyPolicyTextBlock" name="WarrantyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="itri_WaterOperatingSegmentMember" name="WaterOperatingSegmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
