Smart Gas Meter System Design Guide
Providing standardized smart gas meter remote reading system design, selection and implementation specifications for gas utilities, industrial parks and commercial buildings. Covering full lifecycle management from system architecture to construction acceptance, ensuring safety, accuracy and reliability of gas metering.
1.1 System Overview
The Smart Gas Metering System is a comprehensive solution specifically designed for gas metering, aimed at achieving automated data collection, remote monitoring and safety management of gas meters. By integrating IoT communication technologies (NB-IoT, LoRaWAN, 4G/5G), ultrasonic/diaphragm metering technology and cloud data platforms, the system transforms traditional manual meter reading into intelligent remote monitoring and management. The system particularly emphasizes gas safety, supporting leak detection, remote valve control, and abnormal gas usage alarms.
1.2 System Architecture
The smart gas meter system adopts a layered architecture design to ensure high availability, security and scalability:
1.3 Key Features
Remote Meter Reading
Supports multiple communication protocols including NB-IoT and LoRaWAN for automatic data collection and remote transmission of gas meter data.
Safety Monitoring
Real-time monitoring of gas leaks, abnormal gas usage, and pipeline pressure, with support for remote emergency valve shut-off control.
Prepaid Management
Supports prepaid mode with automatic low balance alerts, automatic valve closure for arrears, and remote valve opening after recharge.
Data Analytics
Gas consumption statistical analysis, abnormal usage detection, leak early warning, energy consumption reports and predictive analysis.
1.4 Chapter Navigation
For quick navigation, chapter names are displayed as buttons. Below are the chapter link buttons:
System Components
Detailed introduction to the architecture, components and working principles of smart gas meter systems
1.1 System Architecture
The smart gas meter system adopts Advanced Metering Infrastructure (AMI) architecture, which is an integrated, fixed network system that enables two-way communication between gas utilities and users. The architecture consists of four core layers: smart meter layer, communication network layer, data processing layer and application service layer. The system is specifically optimized for the safety requirements of the gas industry, supporting explosion-proof certified equipment and intrinsically safe circuits.
Figure 1-1: Smart Gas Meter NB-IoT System Architecture Overview
1.2 Components & Functions
Ultrasonic Smart Gas Meter
Uses ultrasonic time-of-flight measurement with no mechanical moving parts, accuracy up to ±0.5%, service life up to 20 years, supports bidirectional metering.
Diaphragm Smart Gas Meter
Traditional diaphragm metering + smart module, accuracy ±1.5%, lower cost, suitable for large-scale deployment, supports NB-IoT/LoRaWAN communication.
Industrial & Commercial Smart Gas Meter
High-flow turbine/rotary gas meters with temperature and pressure compensation, accuracy ±1.0%, suitable for industrial users and commercial buildings.
Communication Gateway/Concentrator
Supports LoRaWAN/NB-IoT protocol conversion, single gateway can connect thousands of gas meters, with local data caching capability.
1.3 Working Principles
Gas Metering
Smart gas meters measure gas flow in real-time using ultrasonic or diaphragm metering technology, storing data locally at set intervals (typically 15 minutes to 1 hour), while monitoring pipeline pressure and temperature.
Data Transmission
Gas meters transmit metering data, status information and alarm data to the nearest base station or gateway via low-power wide-area networks such as NB-IoT/LoRaWAN, using AES-128 encryption to ensure data security.
Data Aggregation
Gateways/concentrators aggregate data from multiple gas meters and transmit it to cloud data centers via backbone networks such as 4G/fiber, supporting offline data buffering and data integrity verification.
Data Processing
MDMS (Meter Data Management System) validates, estimates, edits and stores data, generating billing data, gas usage analysis reports and anomaly alerts.
Safety Control
When the system detects leaks, abnormal gas usage or arrears, it can remotely issue valve closure commands, and the gas meter executes valve shut-off operations to ensure gas safety.
Design Guidelines
Core principles, standards and key consideration dimensions for smart gas meter system design
2.1 Design Principles & Standards
Safety First
Gas systems must meet explosion-proof requirements, using intrinsically safe circuit design to ensure no gas explosions occur under any fault conditions.
MeteringAccuracyConfirm
Gas MeterAccuracyShouldMeetTradeSettlementneedrequirement，ResidentialUser±1.5%，Industrial/CommercialUser±1.0%，SupportsT&P Compensation。
LongLifespanDesign
Gas MeterBattery LifeShould≥10years，MeteringMovementLifespan≥20years，ReduceReplacementMaintenanceProtectionCost。
Scalability
System ArchitectureSupportsFromThousandsToMillionsGas MeterlevelSmoothExpand，CommunicationProtocolSupportsMultipleTypeTechnologyCoexist。
2.2 Design GuidelinesHeavyneedPropertyandRecommendation
SmartGas MeterSystemDesignRequiredneedComprehensiveConsiderSafetyProperty、Reliability、EconomicPropertyandCanMaintenanceProtectionProperty。GasWorkAsFlammable and ExplosiveGasBody，SystemDesignMustMustWillSafetyPutAtFirst Priority，RequiredHasElectricalEquipmentMustMustMeetExplosion-proof Certificationneedrequirement。SameTime，ByatGas MeterThroughNormalInstallationAtHouseholdOutsideorPipeline Welletc.HarshEnvironment，EquipmentRequiredneedToolPrepareGoodGoodProtection RatingandEnvironmentSuitableShouldProperty。
2.3 CoreDesign/SelectTypeLogical
RequiredrequirementAnalysis
ClearConfirmUserRegulationMode、Gas UsageFeatures、SafetyneedrequirementandBudget Constraints
TechnologySelectType
SelectChooseMeteringTechnology（Ultrasonic/Diaphragm）andCommunication Technology（NB-IoT/LoRaWAN）
Solution Design
DesignNetworkTopology、DataFlowProcess、SafetyStrategyandEmergency Plan
ImplementVerification
DividePhaseDeploy、TestVerification、OptimizationCommissioningWhole
2.4 Key Consideration Dimensions
| Maintenancedegree | ConsiderneedPoint | RecommendationPointStandard |
|---|---|---|
| Performance & Experience | Metering Accuracy、ResponseSpeeddegree、Data CollectionCentralizedSuccess Rate | Accuracy±1.5%，CollectionCentralizedSuccess Rate≥99% |
| Stability/Reliability | EquipmentFailure Rate、CommunicationStability、DataCompleteProperty | yearsFailure Rate＜0.5%，DataCompleteRate≥99.9% |
| Maintainability/Replaceability | RemoteDiagnosis、ModuleizationDesign、Spare parts commonality | SupportsOTARiseLevel，CommunicationModuleCanReplacement |
| Compatibility/Scalability | ProtocolStandardization、MultipleFactoryBusinessMutualOperation、CapacityExpand | SupportsDLMS/COSEMProtocol，APIOpenPut |
| GenerateLifePeriodCost(LCC) | ProcurementCost、InstallationCost、OperationMaintenanceCost、ReplacementCost | 10yearsTCOOptimal，Battery Life≥10years |
| Energy/Environment | EquipmentPower Consumption、BatteryTypeType、Material RingGuaranteeProperty | WaitMachinePower Consumption＜10μA，LithiumBatteryCanRecycle |
| SafetyCompliance | Explosion-proof Certification、Metering Certification、Network Security | Ex ia IIC T4Explosion-proof Certification，MIDMetering Certification |
Application Scenarios
IntroductionSmartGas MeterSystemScope of ApplicationandClassicTypeApplication Scenarios
3.1 Scope of Application
SmartGas MeterSystemWidelyApplicableatRequiredneedperformGas MeteringandManagementVariousTypeScenario，IncludingButNotLimitat：Residential Communities、Commercial Complexes、Industrial Parks、Public Building、Gas Pipeline Networksetc.。SystemCanBased OnNotSameScenarioFeaturesperformFixedControlizationConfiguration，MeetMultipleSampleizationBusinessRequiredrequirement。
3.2 Typical Scenarios
Residential Communities
Business Characteristics
UserQuantityLarge、Gas UsageVolumeFluctuationObvious、BillingPeriodFixed（monthsdegree），RequiredSupportsPrepaidandTiered Gas Pricing。
Environmental Constraints
Gas MeterDivideScatterInstallationatKitchenorPipeline Well，SignalPenetrateneedrequirementHigh，RequiredConsiderPreventionWaterPreventionMoisture。
KeyRisk Points
EnterHouseholdInstallationCoordinateCommissioningDifficultdegreeLarge、Signal CoverageBlind Spots、UserPrivacyGuaranteeProtection、Meter ReadingDataDisputeProcessing。
Industrial Parks
Business Characteristics
Gas UsageVolumeLargeAndStable、RequiredneedDivideTimeMetering、MultipleFeeRateSettlement、PowerCauseNumberAssessment，RequiredrequirementSideResponse。
Environmental Constraints
ElectricMagneticInterferenceStrong、EnvironmentTemperaturedegreeChangeLarge，CanAbleStoreAtCorrosionPropertyGasBody，RequiredIndustrialLevelPreventionProtection。
KeyRisk Points
High FlowMetering Accuracy、T&P CompensationAccuracy、GenerateProductContinuousPropertyGuaranteeFailure、Energy ConsumptionDataSafety。
Commercial Complexes
Business Characteristics
TenantPublicMultiple、DivideHouseholdMeteringComplex、RequiredSupportsMultiple Billing Modes、Energy AnalysisRequiredrequirementStrong。
Environmental Constraints
Building StructureComplex、Frequent Renovation Changes、RequiredBeautifulObserveConcealedInstallation，NotImpactCommercialEnvironment。
KeyRisk Points
TenantChangeMoreTimeMeterServiceProcessing、PublicAreaDomainEnergy ConsumptionDivideShare、SystemandPropertyManagementCentralizedbecome。
Healthcare Facilities
Business Characteristics
UseAbleContinuousPropertyneedrequirementCritical、Department Independent Accounting、SpecialAreaDomain（Operating Room、ICU）RequiredHeavyPointMonitoring。
Environmental Constraints
ElectricMagneticCompatibleneedrequirementHigh、DisinfectionEnvironmentneedrequirementHigh、NoBacteriaAreaDomainLimitEnter。
KeyRisk Points
SystemFaultImpactMedicalSafety、DataPrivacyCompliance、UrgentSituationDownSupplyGasGuaranteeFailure。
Educational Institutions
Business Characteristics
UseAbleSeasonSectionPropertyObvious、DormitoryAreaRequiredPrepaid Management、LaboratorySpecialGas UsageRequiredrequirement、SectionAbleAssessmentPressure。
Environmental Constraints
CampusAreaLarge、BuildingDivideScatter、LearnGenerateDormitoryDenseCentralized、RequiredConsiderSafetyEducation。
KeyRisk Points
LearnGenerateViolateRegulationGas Usage、FalsePeriodEmptyPlacePeriodManagement、LaboratorySafety Monitoring、Energy ConsumptionDataPublicize。
Hotels & Hospitality
Business Characteristics
CustomerRoom IndependentMetering、andPMSSystemCentralizedbecome、Real-timeUseAbleMonitoring、SectionAbleManagementRequiredrequirement。
Environmental Constraints
Renovation GradeTimesneedrequirementHigh、EquipmentRequiredConcealedInstallation、NotImpactCustomerHouseholdBodyVerify、MaintenanceProtectionTimeBetweenWindowLimited。
KeyRisk Points
SystemandHotelManagementSystemCentralizedbecomeStability、CustomerHouseholdComplaintProcessing、Energy ConsumptionAbnormalFastSpeedResponse。
Gas Pipeline Networks
Business Characteristics
Pipeline NetworkDivideAreaMetering（DMA）、Leak Detection、PressureMonitoring、Production and SalesDifferenceAnalysis。
Environmental Constraints
UndergroundInstallationEnvironmentHumid、Manhole CoverDownSignalWeak、RequiredWaterproof and Corrosion-resistantDesign、MaintenanceProtectionCanReachPropertyDifference。
KeyRisk Points
UndergroundSignal Coverage、EquipmentPreventionWateretc.Level、BatteryReplacementPeriod、Pipeline NetworkLeakEarly WarningAccuracy。
GasCommissioningPressure Station
Business Characteristics
Safety MonitoringPriority、PressureFlowReal-timeMonitoring、RemoteCommissioningControl、EmergencyCutoff。
Environmental Constraints
Explosion-proofneedrequirementStrict、RequiredThisQualitySafetyDesign、HouseholdOutsideHarshEnvironment、Lightning StrikeRiskHigh。
KeyRisk Points
SystemFaultImpactSupplyGasSafety、Explosion-proof CertificationCompliance、ThunderElectricSurgePreventionProtection、EmergencyResponseTimeEffect。
Solution Selection
SmartGas MeterTechnical Solution ComparisonandSelectTypeDecisionPointSouth
4.1 MeteringTechnologyforCompare
| TechnologyTypeType | MeteringOriginalManagement | Accuracy | Lifespan | Cost | Applicable Scenarios |
|---|---|---|---|---|---|
| DiaphragmGas Meter | VolumeStyleMetering，GasBodyPush Diaphragm | ±1.5% | 10-15years | Low | Residential users, low flow |
| Ultrasonic Gas Meter | Time-of-flight gas velocity measurement | ±0.5% | 20years+ | High | High-end residential, commercial users |
| Turbine Gas Meter | Turbine speed proportional to flow | ±1.0% | 15years | Medium | Industrial/commercial, medium-high flow |
| Rotary Gas Meter | Positive displacement, rotary lobe metering | ±1.0% | 15years | Medium-High | Industrial users, high flow |
4.2 Communication Technology Comparison
NB-IoT
Advantages：Wide carrier network coverage, strong deep coverage capability, low power consumption, high security
Disadvantages：Requires SIM card and data fees, dependent on carrier network, limited downlink bandwidth
Applicable：Urban Residential、DivideScatterDeploy、NoRequiredSelf-builtNetwork
LoRaWAN
Advantages：Self-built network controllable, no data fees, long transmission distance, extremely low power consumption
Disadvantages：Requires gateway deployment, spectrum management, complex network planning
Applicable：ParkArea、Factory、CentralizedMediumDeployScenario
4G/5G
Advantages：High bandwidth, strong real-time capability, supports video monitoring
Disadvantages：High power consumption, high data fees, difficult battery power supply
Applicable：Industrial/CommercialLargeMeter、CommissioningPressure Station、RequiredReal-timeMonitoringScenario
4.3 Selection Decision Matrix
| Scenario | Recommended Meter Type | Recommended Communication | Key Considerations |
|---|---|---|---|
| Urban Residential | Diaphragm Smart Gas Meter | NB-IoT | Cost, Coverage, Battery Life |
| High-end Residential | Ultrasonic Smart Gas Meter | NB-IoT | Accuracy, Lifespan, Quiet operation |
| Industrial Parks | Turbine/Rotary Gas Meter | LoRaWAN+4G | Accuracy, T&P compensation, Real-time |
| Commercial Complexes | Ultrasonic/Diaphragm | LoRaWAN | Sub-metering, Centralized management |
| Gas Pipeline Networks | Ultrasonic Flowmeter | NB-IoT/4G | Accuracy, Protection rating, Reliability |
4.4 MainFlowFactoryBusinessProduct
Honeywell Q.Sonic
IndustrialLevelUltrasonic Gas Meter，Accuracy±0.5%，SupportsT&P Compensation，ApplicableatHigh FlowIndustrial/CommercialScenario。
Itron Smart Gas Meter
Residential-grade diaphragm smart gas meter, integrated NB-IoT communication, 15-year battery life, supports remote valve control.
Pulse Output Gas Meter
Traditional gas meter + pulse module, low-cost retrofit solution, suitable for smart upgrade of existing gas meters.
NFC/GPRS Smart Gas Meter
Supports NFC near-field communication for on-site commissioning and data reading, GPRS remote transmission.
Solution Design
Introduction to typical interfaces, device connections and wiring logic
5.1 Typical Interface Introduction
Pulse Output Interface
Reed switch or Hall sensor output, each pulse represents a fixed gas volume (e.g., 0.01m³), used for external acquisition modules.
NB-IoT Communication Interface
Built-in NB-IoT module, supports Band 3/5/8/20 frequencies, directly connects to cloud platform via carrier network.
LoRaWAN Communication Interface
Supports Class A/B/C modes, operating frequency 868/915MHz, transmission distance up to 15km (open area).
Valve Control Interface
Built-in solenoid or motor valve, supports remote on/off control, with manual valve opening function and valve status feedback.
5.2 Device Connection & Interface Design
Figure 5-1: Smart Gas Meter System Device Connection Architecture
5.3 Typical Wiring and Interface Logic Description
Pulse Acquisition Wiring
Interface Type: Reed switch/Hall sensor
Cable Specification: RVVP 2×0.5mm² shielded cable
Maximum Distance: 50m
Notes: Single-end grounding of shield, avoid parallel routing with power cables
Valve Control Wiring
Interface Type: Solenoid/Motor valve
Cable Specification: RVV 4×0.75mm²
Power Requirements: DC 3.6V (battery) or DC 12V (external power)
Notes: Valve must have explosion-proof certification, wiring must meet intrinsic safety requirements
Gateway/Concentrator Wiring
Uplink Interface: RJ45 Ethernet/4G SIM card
Downlink Interface: LoRaWAN wireless/RS485 wired
Power Requirements: AC 220V or DC 12V
Notes: Antenna installation height ≥3m, avoid metal obstruction
5.4 Connection Specifications Description
| Connection Type | Interface Standard | Cable Specification | Maximum Distance | Precautions |
|---|---|---|---|---|
| Gas Meter-Collector | Pulse/RS485 | RVVP 2×0.5mm² | 50m/1200m | Requires 120Ω termination resistor |
| Collector-Gateway | LoRaWAN/NB-IoT | Wireless | 2-15km | Note antenna installation position |
| Gateway-Server | Ethernet/4G | CAT6/SIM card | Unlimited | Recommend dual-link redundancy |
| Valve Control | Dry contact/OC output | RVV 4×0.75mm² | 30m | Note explosion-proof rating requirements |
Risk Assessment
Risk identification, assessment and response strategies for smart gas meter systems
6.1 Risk Categories
Safety Risks
- Gas leak not detected in time
- Valve malfunction causing gas cutoff
- Explosion-proof equipment failure
- Electrical fire risk
Technical Risks
- Communication network failure
- Metering accuracy deviation
- Software system vulnerabilities
- Equipment compatibility issues
Cybersecurity Risks
- Data transmission eavesdropping
- System malicious attacks
- Valve illegal control
- User privacy breach
6.2 Risk Assessment Matrix
Risk Level Assessment
| Risk Item | Probability | Impact Level | Risk Level | Response Priority |
|---|---|---|---|---|
| Gas leak detection failure | Low | Critical | Severe | Highest |
| ValveRemoteControlLoseEffect | Medium | High | High | High |
| CommunicationNetworkMediumBreak | Medium | Medium | Medium | Medium |
| MeteringDataBiasDifference | Low | Medium | Low | Low |
| Network SecurityAttack | Low | High | High | High |
6.3 RiskResponse Strategies
AvoidStrategy
SelectUseAfterExplosion-proof CertificationEquipment，Strictly FollowThisQualitySafetyDesignSpecifications，FromSourceEliminate at SourceSafetyHidden Hazards。
MitigateStrategy
DeployRedundancyCommunicationLink，ImplementEndToEndEncryption，RegularSafetyAudit，ReduceLowRiskProbabilityandImpact。
TransferStrategy
PurchaseEquipmentResponsibilityRiskandNetwork SecurityRisk，andProfessionalSafetyServiceBusiness Cooperation，TransferPartialRiskResponsibility。
AcceptStrategy
foratLowGeneralRateLowImpactRisk，EstablishMonitoringMachineControlandEmergency Plan，AcceptResidualRisk。
6.4 Emergency Measures
Gas LeakEmergency
SystemDetectedLeakSignalAfter，AutomaticTriggerCloseValveCommand，SameTimeTowardUserandGasCompanySendAlarmNotification。On-site PersonnelShouldEvacuate Immediately，ProhibitedUseOpen FlameandElectricalSwitch，etc.WaitProfessionalPersonnel HandlePlace。
SystemFaultEmergency
MainSystemFaultTime，EdgeInsulationGatewayAutomaticSwitchToThisGroundModeStyle，ContinueExecuteRowData CollectionCentralizedandSafety Monitoring。SameTimeStartPrepareUseCommunicationLink，NotificationOperationMaintenancePersonnelperformFaultTroubleshoot。
Network attackEmergency
DetectedAbnormalVisitorAttackRowAsTime，SystemAutomaticIsolatedReceiveImpactNode，CutoffOutsideVisit，StartSafetyAuditandTraceSourceAnalysis，MustneedTimeNotificationNetwork SecurityDepartment Intervention。
Supporting Systems
SmartGas MeterSystemSupporting Hardware and SoftwareSystemIntroduction
7.1 Supporting SystemsOverview
SmartGas MeterSystemNormalOperationRowRequiredneedMultiplepcsSupporting SystemsSupport，IncludingData Management System、Cloud Platform、SupplyElectricSystem、NetworkBasicFacilitiesetc.。TheseSupporting SystemsCommonSameStructurebecomeCompleteSmartGas MeteringResolveSolution。
MDMSData Management System
Meter Data Management System，NegativeResponsibleGas MeterData CollectionCentralized、Verification、Storage、AnalysisandReportGeneratebecome，YesSystemCoreData Processinglevelunits。
CloudCalculatelevelunits
ProvideSupplyElasticPropertyCalculate、StorageandNetworkResourceSource，SupportsSystemHighCanUseDeployandElasticPropertyExpand，EnsureBusiness Continuity。
UPS Uninterruptible Power Supply
AsGateway、ServiceDeviceetc.KeyEquipmentProvideSupplyNotBetweenBreakSupplyElectricGuaranteeFailure，EnsureSystemAtCityElectricFaultTimeStillAbleNormalOperationRow。
NetworkBasicFacilities
IncludingLoRaWANGateway、NB-IoTBaseStation、RouteDevice、ExchangeMachineetc.，BuildCanRelyData TransmissionNetwork。
7.2 MDMS SystemFunction
| FunctionModule | Key Features | BusinessPriceValue |
|---|---|---|
| Data CollectionCentralized | MultipleProtocolAccess、FixedTime/Real-timeCollectionCentralized、BreakPointResume Transmission | EnsureDataCompletePropertyandAndTimeProperty |
| DataVerification | VEE（Verification、Estimate、Edit）Processing | GuaranteeCertificateBillingDataAccuracy |
| BillingManagement | Tiered Gas Pricing、Prepaid、AccountSingleGeneratebecome | SupportsMultiple Billing Modes |
| Safety Monitoring | Leak Detection、AbnormalGas Usage、Valve Control | GuaranteeFailureGas UsageSafety |
| ReportAnalysis | Gas UsageStatistics、Energy Analysis、PredictionReport | SupportsOperationBusiness Decision |
7.3 SystemCentralizedbecomeInterface
SmartGas MeterSystemRequiredneedandGasCompanyItsOtherBusinessSystemperformCentralizedbecome，MainneedIncluding：
- Business RevenueFeeSystem：TransferBillingData，ReceivePayFeeInformation
- GISGroundManagementInformationSystem：Gas MeterPositionManagement，Pipeline NetworkCanViewization
- SCADACommissioningdegreeSystem：Pipeline NetworkPressureMonitoring，CommissioningdegreeLinkage
- CustomerHouseholdServiceSystem：Gas UsageQuery，ReportRepairSingle
- ERPEnterpriseResourceSourceSystem：AssetsManagement，ProcurementManagement
Tools & Materials
SmartGas MeterSystemInstallationCommissioningTestRequiredRequiredToolsandAuxiliary Materials
8.1 Installation Tools
Gas MeterInstallation ToolsKit
IncludingPipeWrench、Wrench、Sealing tape、Pressure gaugeetc.，forGas MeterMechanicalInstallationandPipe Connection。
Network Tester
forTestNB-IoT/LoRaWANSignal Strengthdegree、NetworkConnectThroughPropertyandData TransmissionQuality。
Gas Detector
ConvenientCarryStyleCanGasBodyInspectMeasureInstrument，forInstallationCommissioningTest ProcessMediumLeak DetectionandSafetyConfirm。
HandHoldCommissioningTest Terminal
SupportsNFC/RedOutsideCommunication，forGas MeterParametersConfiguration、DataReadandFaultDiagnosis。
8.2 Testing Equipment
| EquipmentName | Purpose | TechnologyParameters |
|---|---|---|
| StandardGasBodyFlowMeter | Gas MeterAccuracyVerification | Accuracy±0.2%，Range0.016-25m³/h |
| PressureVerificationInstrument | PressureSensingDeviceSchoolAccuracy | Accuracy±0.05%FS，Range0-1MPa |
| SignalAnalysisInstrument | WirelessSignalTest | Frequency Range9kHz-6GHz |
| Data CollectionCentralizedDevice | CommunicationProtocolTest | SupportsDLMS/COSEM、Modbusetc. |
8.3 Auxiliary Materials
Sealing Materials
Specification：PTFEGenerateTape、Anaerobic Adhesive
Purpose：PipelineThreadConnectionSeal
LineCable Material
Specification：RVVPShieldingLine、RVVElectricSourceLine
Purpose：SignalTransmissionandSupplyElectricConnection
InstallationAccessories
Specification：Meter Box、Bracket、Connector、Snap
Purpose：Gas MeterFixedandGuaranteeProtection
8.4 ToolsList
| TypeOther | ToolsName | Quantity | PrepareNote |
|---|---|---|---|
| ThroughUseTools | Pipe wrenches, adjustable wrenches、Screwdriver Kit | Various1Set | Explosion-proofType |
| ElectricalTools | Multimeter、StripLineWrench、PressureLineWrench | Various1pcs | AbsoluteInsulationType |
| Testing Tools | Gas Detector、SignalTestInstrument | Various1units | RequiredRegular calibration |
| SafetyInstallPrepare | SafetyCap、AbsoluteInsulationHandSet、PreventionProtectionGlasses | AccordingPersonNumber | MustPrepare |
Quality Control
SmartGas MeterProduct Quality DifferentiationandQuality Control Measures
9.1 Product Quality Differentiation
SafetyAuthentication
| AuthenticationItemProject | Premium Products | Standard Products |
|---|---|---|
| Explosion-proof Certification | Ex ia IIC T4 | NoorEx ia IIB |
| Metering Certification | MID/OIML | OnlyThisGroundAuthentication |
| Network Security | ISO 27001 | NoAuthentication |
HardPieceProductQuality
| PointStandard | Premium Products | Standard Products |
|---|---|---|
| MCUChip | IndustrialLevel(-40~85°C) | CommercialLevel(0~70°C) |
| Battery | Lithium Thionyl Chloride | CommonThroughLithiumBattery |
| Protection Rating | IP68 | IP54 |
9.2 Potential Problems & Risks of Poor Quality
SafetyHidden Hazards
NotThroughExplosion-proof CertificationEquipmentCanAbleAtGasEnvironmentMediumProductGenerateElectricSpark，Cause Explosion Accident。ValveQualityNotQualifiedCanAbleCausingCloseValveNotStrictorNoMethodOpenStart，ImpactGas UsageSafety。
Metering Deviation
LowQualityMeteringMovementAccuracyDifference、TemperatureDriftLarge，CausingMeteringDataNotAccuracyConfirm，CauseUserComplaintandEconomic Disputes。LongPeriodUseAfterAccuracyDeclineMoreAsObvious。
Battery LifeShort
LowQualityBattery CapacityVirtualStandard、Self-dischargeElectricRateHigh，ActualService LifeRemoteLowatStandardCalledValue，CausingFrequent ReplacementBattery，IncreaseOperationMaintenanceCost。
CommunicationUnstable
LowQualityCommunicationModuleSensitivedegreeDifference、Transmit PowerUnstable，CausingData CollectionCentralizedSuccess RateLow，ImpactSystemWholeBodyCanUseProperty。
9.3 Quality Control MeasuresandRecommended Practices
EnterFieldInspectVerify
EstablishStrictIncoming MaterialInspectVerifyControldegree，forEveryBatchTimesProductperformExtractInspect，IncludingOutsideObserveCheck、Function Test、AccuracyVerificationetc.。
Aging Test
forKeyEquipmentperformHighTemperatureAging Test，ScreenSelectEarlyPeriodLoseEffectProduct，EnsureFactoryProductReliability。
AuthenticationReview
PrioritySelectChooseThroughExplosion-proof Certification、Metering Certification、QualityBodySystemAuthenticationSupplyShouldBusinessandProduct。
TraceabilityManagement
EstablishProductTraceabilityBodySystem，RecordEveryunitsEquipmentGenerateProductBatchTimes、InstallationPosition、MaintenanceProtectionRecord，ConvenientatQualityProblem TraceSource。
Calculators
ProvideSupplySmartGas MeterSystemDesignRequiredRequiredVariousTypeCalculators
10.1 System Capacity Calculation
CalculateSystemRequiredRequiredGatewayQuantityandServiceDeviceCapacity
Required Gateways：24 units
RecommendationServiceDeviceConfiguration：4Core8GB，200GBStorage
10.2 Link Redundancy Calculation
CalculateCommunicationLinkCanUsePropertyandRedundancyRequiredrequirement
RequiredRequiredRedundancyLinkNumber：2 links
Actual Availability：99.9975%
10.3 Network Performance Calculation
CalculateData TransmissionBandwidthRequiredrequirement
Peak Bandwidth Requirement：26.67 kbps
Daily Data Volume：45.78 MB
10.4 Power Requirement Calculation
CalculateSystemEquipmentElectricForceRequiredrequirementandUPSCapacity
Total Power Requirement：860 W
Recommended UPS Capacity：1118 VA
10.5 Battery Life Calculation
CalculateGas MeterBatteryExpectedService Life
Daily AveragePower Consumption：0.52 mAh
Estimated Battery Life：10.0 years
10.6 Coverage RangeCalculate
CalculateLoRaWANGatewayManagementTheoryCoverage Range
Link Budget：156.0 dB
Theoretical Coverage Radius：5.2 km
Installation & Commissioning
SmartGas MeterSystemInstallation Requirements、Construction StandardsandCommissioningTest MethodMethod
11.1 Pre-Installation Requirements
Site Survey Notes
- Confirm gas meter installation locationGasPipelineSpecificationandPressureetc.Level
- MeasureVolumeInstallationPositionNB-IoT/LoRaWANSignal Strengthdegree
- CheckWeekEdgeYesNoHasStrongElectricMagneticInterferenceSource
- ConfirmMeter BoxDimensionsandInstallationEmptyBetween
- RecordOn-siteEnvironmentTemperaturedegreeandWetdegreeRange
Risk PointsIdentify
- UndergroundPipeline WellSignal CoverageBlind Spots
- MetalMeter BoxforWirelessSignalShielding
- HighTemperature/LowTemperatureEnvironmentforEquipmentImpact
- HumidEnvironmentWaterproof and Corrosion-resistantneedrequirement
- Explosion-proofAreaDomainEquipmentSelectTypeneedrequirement
Essential Prerequisites
- GasPipelineAlreadyCompletebecomeInstallationandGas tightness test
- Meter Box/MeterPositionAlreadyInstallationCompleted
- CommunicationNetworkAlreadyDeployAndTestThrough
- AfterunitsSystemAlreadyUpLineAnd CompletebecomeConfiguration
- Construction PersonnelAlreadyCompletebecomeSafetyTraining
11.2 Installation Requirements
ResidentialGas MeterInstallation
InstallationHighdegree：MeterBottomDistanceGroundSurface1.4-1.8m
InstallationPosition：Good Ventilation，Easy access for meter reading and maintenance
SafetyDistance：DistanceElectricSourceSocket≥30cm
Meter Boxneedrequirement：NotMetalorOpenHoleMetalBoxBody
Industrial & Commercial Gas MeterInstallation
InstallationPosition：CommissioningPressureBox ExportorGas UsageEquipmentEntrance
BeforeAfterStraightPipeSection：Before10DAfter5D（DAsPipe Diameter）
T&P Compensation：RequiredInstallationTemperaturedegreeandPressureSensingDevice
Protection Rating：HouseholdOutsideInstallationRequiredIP65WithUp
11.3 Construction Standards
| ConstructionRingSection | Specificationsneedrequirement | Acceptance Standards |
|---|---|---|
| Pipe Connection | UseSpecialUseSealing Materials，ThreadConnectionRequiredWrapGenerateTape | Gas tightness testQualified，NoLeak |
| Gas MeterInstallation | WaterlevelInstallation，Import/Export PartyTowardPositiveConfirm，MeterDial FacingTowardConvenientatReading | InstallationFirm，NoTilt |
| daysLineInstallation | OutsidePlacedaysLineRequiredLead OutMeter Box，Avoid metal obstruction | Signal Strengthdegree≥-100dBm |
| LineCable Laying | ThroughPipeGuaranteeProtection，andGasPipelineGuaranteeHoldSafetyDistance | LineCableNoDamaged，ConnectorFirm |
11.4 Commissioning Methods & Precautions
ThroughElectricCheck
ConfirmBatteryVoltageNormal（≥3.0V），LCDDisplayNormal，NoAbnormalAlarm。foratOutsideSupplyElectricEquipment，CheckElectricSourceConnectLinePositiveConfirm。
Communication Test
UseCommissioningTest TerminalorAfterunitsSystemInitiateCommunication Test，ConfirmGas MeterAbleNormalUpReportData，DownRowCommandAblePositiveConfirmExecuteRow。
MeteringVerification
UseStandardFlowMeterforGas MeterperformVerification，ConfirmMeteringErrorDifferenceWithin AllowedRangeInside（Residential±1.5%，Industrial/Commercial±1.0%）。
ValveTest
TestRemoteOpenValve/CloseValveFunction，ConfirmValve OperationNormal，StatusFeedbackPositiveConfirm。Note：TestBeforeRequiredConfirmDownTravelNoGas UsageEquipmentOperationRow。
Gas tightness test
UseInspectLeakInstrumentforRequiredHasConnectionPointperformLeak Detection，ConfirmNoGas Leak。ThisYesInstallationCommissioningTest MaximumAfterAlsoYesMostHeavyneedRingSection。
11.5 Safety & Prevention
Personal Safety
- Construction PersonnelMustMustAfterGasSafetyTraining
- OperationTimeWear protective equipment
- ProhibitedAtGas LeakEnvironmentMediumOperation
- GuaranteeHoldOperationAreaDomainGood Ventilation
Equipment Safety
- UseExplosion-proof CertificationElectricalEquipment
- Prohibited to CarryElectricOperationGasEquipment
- EquipmentConnectGroundGoodGood
- ThunderstormdaysGasStopHouseholdOutsideOperation
Network Security
- ModifyEquipmentDefault Password
- StartUseCommunicationEncryptionFunction
- LimitRemoteVisitPermission
- RegularUpdateFirmwareVersion
Acceptance & Maintenance
FixedMeaningItemProjectDeliveryStandard，AndEstablishLongEffectOperationMaintenanceMachineControl
12.1 Acceptance Standards & Test Items
| Test Item | Test Content | Pass Criteria | Test Method |
|---|---|---|---|
| Metering Accuracy Test | SimulateNotSameFlow/LoadlinksPieceDownMeteringErrorDifference | ErrorDifferenceWithin AllowedRangeInside（Based OnDeviceMeteretc.Level） | Standard MeterMethodforCompareTest |
| Communication Test | Continuous72hoursDataUpReportSuccess RateStatistics | Success Rate≥99% | levelunitsDataStatisticsAnalysis |
| Function Test | Remote Meter Reading、ValveControl、Alarmetc.FunctionVerification | RequiredHasFunctionNormalResponse | FunctionGraduallyItemTest |
| Pressure Test | SimulateHighPeakPeriodLargeVolumeEquipmentSameTimeUpReport | SystemNoObviousLatencyorPacket Loss | LoadTesting Tools |
| Safety Test | Gas tightness test、Vulnerability Scanning、PenetrationTest | NoLeak，NoHighDangerLeakHole | ProfessionalSafety TestTools |
12.2 Operation & Maintenance Requirements
Daily Inspection (Daily)
- CheckGatewayPointIndicator，Display ScreenYesNoNormal
- ViewSystemAlarm，ConfirmNoAbnormal Events
- CheckData CollectionCentralizedSuccess RateYesNoReachStandard
- CheckServiceDeviceMagneticDiskEmptyBetweenandCPULoad
Regular Maintenance (Monthly/Quarterly)
- Mechanical：CheckGas MeterConnectionYesNoLoose，CleanMeter Box
- Electrical：CheckConnectLineEndSubYesNoLoose，ClearManagementChassisInsideDust
- Data：ArchiveHistoricalLog，DataStorageIndexOptimization
- Safety：UpdateSafetyPatch，CheckCertificateDocumentHasEffectPeriod
12.3 Version History & Revision Notes
| Version | Revision Date | Revised By | Description |
|---|---|---|---|
| v1.0.0 | 2025-08-01 | SolutionMall Technical Department | Initial version release，Contains12pcsSectionAndCalculators |
| v1.0.1 | 2025-09-15 | SolutionMall Technical Department | UpdateSolution SelectionSection，IncreaseNB-IoTTechnologyforCompare |
| v1.1.0 | 2025-11-20 | SolutionMall Technical Department | NewIncreaseBattery LifeCalculators，OptimizationRisk Assessment Matrix |
| v1.2.0 | 2026-01-05 | SolutionMall Technical Department | ImproveApplication ScenariosDescription，UpdateSupporting SystemsInterfaceList |
Contact Us
For any questions or suggestions, please visit our official website:
www.solutionmall.com