Revolution counters, production counters, taximeters, mileometers, pedometers and the like; speed indicators and tachometers, except hydrographic and meteorological instruments; stroboscopes

1. Scope and Applicability

This PCR governs foreground manufacturing data packages for instruments that count revolutions or production events, calculate or record distance or steps, indicate speed or rotational speed, or provide stroboscopic observation. It covers mechanical, electromechanical, and electronic products sold as finished instruments, including taximeters, vehicle or equipment speed indicators, tachometers, mileometers/odometers, pedometers, production counters, and stroboscopes.

Hydrographic and meteorological instruments are excluded. Gas, liquid, electricity-supply, or production meters; automatic regulating or controlling instruments; complete vehicles or machines containing an embedded indicator; general-purpose computers whose software can emulate a counter; and standalone upstream components sold independently are also excluded. The foreground boundary is final product manufacturing from purchased materials and components at the production site through assembly, programming where applicable, calibration or functional testing, and packaging at the factory gate. Distribution, use, maintenance, and end of life are outside this foreground manufacturing data package unless a downstream study adds them explicitly.

Dataset producers shall declare instrument type, sensing principle, display technology, power source, housing material, functional specification, conformity regime, accessories, packaging state, manufacturing geography, and reporting period. The inventory below contains common atomic exchanges; every additional material, component, waste, or direct elementary emission crossing the actual boundary shall be added as a separate atomic flow.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.medical-appliances-precision-and-optical-instruments-watches-and-clocks.revolution-counters-production-counters-taximeters-mileometers-pedometers-and-the-like-047b2a38
classification_refs	CPC 3.0: 48264 (un-cpc-3-0-structure-2025)
covered_products	Finished revolution counters, production counters, taximeters, mileometers/odometers, pedometers, speed indicators, tachometers, and stroboscopes, including mechanical, electromechanical, and electronic variants
excluded_products	Hydrographic and meteorological instruments; supply or production meters for gas, liquids, or electricity; automatic control equipment; complete vehicles and machines; general-purpose computing devices; standalone components
representative_product	A finished, calibrated or functionally tested counter or indicator instrument with declared architecture and performance specification
production_route	Receipt of purchased materials/components; onsite forming or board installation when performed; mechanical/electronic assembly; programming/configuration when performed; calibration and functional testing; final packaging
market_state	Finished instrument at factory gate; product mass excludes separately reported packaging and accessories unless the dataset explicitly declares their inclusion

3. Reference Flow

Field	Value
What	Provision of the declared counting, distance, speed, rotational-speed, or stroboscopic indication function by a finished instrument
How much	1 kg of finished instrument, excluding separately reported packaging
How well	Meets the declared measurement range, resolution, accuracy or indication tolerance, environmental class, interface, and conformity requirements; taximeter datasets additionally declare distance/time and fare functions (oiml-r21-2007-taximeters)
How long or cycle	At factory-gate release after the declared calibration or functional-test cycle; design service life is metadata for downstream use-stage modelling
reference_flow_link	finished_instrument_output

Field	Value
Reference amount	1 kg
Reference product flow	Revolution counters, production counters, taximeters, mileometers, pedometers and the like, speed indicators and tachometers, except hydrographic and meteorological instruments, stroboscopes 560acd9e-9e1a-4b2e-b304-5a17f8a4ba3c
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	instrument type; sensing and indication principle; architecture; measurement range and resolution; accuracy or indication tolerance; power source and rated voltage; housing material; display technology; firmware/configuration; calibration or functional-test procedure and pass criterion; legal-metrology or conformity regime; accessories; packaging inclusion; product mass; manufacturing site/geography; reporting period

Missing required qualifiers make the reference flow definition incomplete.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_product_mass	reference product and mass-normalized exchanges	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Normalize to 1 kg accepted finished instruments. Exclude packaging mass from the denominator and report packaging separately unless another market state is explicitly declared.
batch_to_reference_mass	batch and annual records	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg/kg reference product	Divide each exchange by conforming finished-product mass from the same boundary and period; do not include rejects in the denominator.
electricity_energy_conversion	purchased electricity	Net calorific value 93a60a56-a3c8-11da-a746-0800200b9a66	MJ	Preserve the metered basis and convert kWh to MJ using exactly 3.6 MJ/kWh. Do not combine electricity with fuel, steam, or heat.
component_mass_consistency	purchased components/materials	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Use net mass entering the process. For piece records, multiply verified count by measured or supplier-declared unit mass and retain evidence.

5. System Boundary

rule_id	applies_to	rule	source_ids
boundary_manufacturing_gate	foreground manufacturing	Include activities from materials/components entering the site through onsite forming or board installation, assembly, programming/configuration, calibration or functional testing, rework/rejects, and final packaging until factory-gate release.	eu-pef-method-2021
boundary_purchased_inputs	upstream products and energy	Represent each purchased material, component, electricity supply, and packaging item with a compatible upstream dataset; keep upstream production emissions outside the foreground process.	eu-pef-method-2021
boundary_waste_and_emissions	manufacturing wastes and direct releases	Include each manufacturing waste and directly measured elementary release generated inside the boundary. Model waste treatment using the declared destination; do not substitute a treatment-service identity for waste.	eu-pef-method-2021
boundary_excluded_stages	distribution, use, maintenance, and end of life	Exclude post-factory-gate stages; a cradle-to-grave study may add them as separate processes and scenarios.	eu-pef-method-2021

Boundary Abstraction

Field	Value
declared_starting_condition	Purchased components, materials, energy, and packaging are received at the site gate with identity, state, quantity, supplier, and geography recorded.
starting_condition_role	Gate-to-gate foreground start; upstream extraction, material/component production, and delivery use linked datasets.
product_classification_scope	Finished products within Section 1 and CPC 3.0 code 48264; classification context does not replace product qualifiers.
recursive_input_rule	If an input is itself a finished instrument in this category, record it once as a product input with a separate upstream dataset; do not recursively apply this PCR inside the same process.
upstream_dataset_requirement	Every purchased input shall link to a technology-, geography-, time-, and state-compatible dataset or be disclosed as a data gap; do not silently use proxies.
disclosure	Declare site, period, architecture, onsite/outsourced steps, component and packaging inclusion, product/reject mass, waste destinations, electricity mix/voltage, allocation, exclusions, and data gaps.

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
instrument_manufacturing	Instrument assembly, calibration/testing, and packaging	required	Always include; use not_applicable for a conditional row only when architecture or route evidence demonstrates absence.	Foreground manufacturing from received inputs to accepted factory-gate product	1 kg accepted finished instrument output, packaging excluded from denominator

Process: Instrument assembly, calibration/testing, and packaging (instrument_manufacturing)

Inputs

Product flows

Aluminium alloy used in onsite part forming (aluminium_alloy_input)

Record only when the site forms or machines aluminium parts; purchased finished parts require their own exact component flow.

• Selected flow: Aluminium alloy d2335464-e0fd-574c-b56f-83fdf8c65b0c
• Flow property / unit: Mass / kg
• Amount rule: measured net aluminium alloy issued less documented returns to stock
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg accepted finished instrument output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_component_records
• Sources:

Printed wire board installed onsite (printed_wire_board_input)

Record the bare printed wire board only when installed or populated onsite; do not use it for purchased populated assemblies or electronic-component collections.

• Selected flow: Printed Wire Board a8bd954c-59b3-4317-b4de-02a17d6da5ca
• Flow property / unit: Mass / kg
• Amount rule: measured or count-to-mass converted printed wire board input
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg accepted finished instrument output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_component_records
• Sources:

LCD display module installed in the product (lcd_display_module_input)

Record only for products containing an LCD module; add another display technology as its own atomic flow.

• Selected flow: LCD display module 264605c6-41b8-4baa-82b0-e27e815063a0
• Flow property / unit: Mass / kg
• Amount rule: measured or count-to-mass converted module input
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg accepted finished instrument output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_component_records
• Sources:

Purchased electrical energy (electricity_input)

Record electricity attributable to onsite forming, assembly, programming, calibration/testing, rework, production environmental control, and packaging.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: metered electricity converted to MJ and allocated to the foreground process
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg accepted finished instrument output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_electricity_records
• Sources:

Corrugated board boxes used for shipping (corrugated_board_boxes_input)

Record finished corrugated boxes when included at the factory gate; add other packaging components separately.

• Selected flow: corrugated board boxes 4f197bec-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Mass / kg
• Amount rule: measured or count-to-mass converted box mass issued to accepted products
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg accepted finished instrument output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_component_records
• Sources:

Waste flows

Elementary flows

Outputs

Product flows

Accepted finished counter, indicator, or stroboscope (finished_instrument_output)

Record accepted calibrated or functionally tested product; packaging remains outside the 1 kg denominator.

• Selected flow: Revolution counters, production counters, taximeters, mileometers, pedometers and the like, speed indicators and tachometers, except hydrographic and meteorological instruments, stroboscopes 560acd9e-9e1a-4b2e-b304-5a17f8a4ba3c
• Flow property / unit: Mass / kg
• Amount rule: exactly 1 kg accepted finished instrument output
• Value mode: Fixed value (fixed_value)
• Specificity: Generic (generic)
• Normalization basis: 1 kg accepted finished instrument output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Method formula (method_formula)
• Sources: un-cpc-3-0-structure-2025

Waste flows

Waste populated printed wiring board (waste_populated_printed_wiring_board_output)

Record rejected or irreparable populated boards generated onsite; declare hazardous classification and destination separately.

• Selected flow: Waste populated printed wiring board eb5ffe4a-49af-450c-9a31-3efdfd343f8a
• Flow property / unit: Mass / kg
• Amount rule: measured net mass transferred to the declared destination
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg accepted finished instrument output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_records
• Sources: eu-pef-method-2021

Aluminium scrap from onsite forming (aluminium_scrap_output)

Record only when onsite forming or machining generates aluminium scrap; disclose alloy, contamination, and destination.

• Selected flow: Aluminium Scrap 96c5f842-ea53-419b-b1cd-c02c479efb45
• Flow property / unit: Mass / kg
• Amount rule: measured net aluminium scrap leaving the foreground process
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg accepted finished instrument output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_records
• Sources: eu-pef-method-2021

Elementary flows

No direct elementary flow is prescribed for all products. Add every directly measured release from onsite combustion, coating, soldering, cleaning, or other operations as a separate species-and-compartment elementary flow.

7. Allocation and Co-product Handling

rule_id	applies_to	rule	source_ids
allocation_subdivide_first	shared lines, utilities, and waste handling	Avoid allocation by subdivision or direct metering whenever technically feasible.	eu-pef-method-2021
allocation_physical_relation	unavoidable shared burdens	Otherwise allocate by a documented causal physical driver such as machine time, metered energy, processed mass, or tested unit-hours.	eu-pef-method-2021
allocation_economic_last_resort	multi-output operations without a physical relation	Use economic allocation only as a last resort, with consistent prices and disclosed sensitivity.	eu-pef-method-2021
allocation_scrap_no_avoided_burden	manufacturing scrap	Report scrap mass/destination without avoided-production credit inside this foreground package; apply recycling burdens or credits only in the downstream study method.	eu-pef-method-2021

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_material_component_records	instrument_manufacturing	each atomic material/component/packaging input	ERP issue/return, invoice, BOM, scale, or count-to-mass record	identity; supplier; grade/model; issued/returned mass; count; unit mass; batch; date	Reconcile issue less return by batch; verify piece-to-mass factors	kg	each batch, monthly aggregation	representative 12 months or complete shorter campaign	every included site	Sum net input by exact flow and divide by accepted output mass	calibrated scale; approved BOM; ERP/invoice reconciliation; unit-mass evidence
cp_electricity_records	instrument_manufacturing	purchased electrical energy	submeter or reconciled facility meter	readings; unit; meter id; voltage; grid mix; allocation driver; output mass; period	Prefer submetering; otherwise allocate contemporaneous meter totals using Section 7	kWh and MJ	monthly/campaign	same production period	every included site	Convert kWh × 3.6, apply allocation share, divide by accepted output mass	meter calibration/bill; allocation worksheet; grid evidence
cp_finished_product_records	instrument_manufacturing	accepted product and conformity	scale, release record, calibration certificate, test log	model; lot; accepted/reject mass; procedure; result; tolerance; pass/fail; configuration; date	Weigh unpackaged conforming product and link to release evidence	kg	each batch/lot	complete reporting period	every included site	Sum conforming released mass only	scale calibration; signed release; traceable test/conformity record
cp_waste_records	instrument_manufacturing	each atomic waste output	scale ticket, transfer note, stock reconciliation	identity; mass; state; hazard class; destination; treatment; date	Weigh separately at transfer and subtract documented returns	kg	each transfer, monthly aggregation	same production period	every included site	Sum net waste by exact flow and divide by accepted output mass	scale calibration; transfer/contractor receipt; hazard classification

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_mass_normalization	each mass input/waste	normalized amount = net exchange mass / accepted unpackaged output mass in the same period	net flow mass; accepted output mass	kg/kg reference product
calc_count_to_mass	piece-recorded inputs	mass = verified count × measured or supplier unit mass, then apply calc_mass_normalization	count; unit mass; output mass	kg/kg reference product
calc_electricity_normalization	electricity	normalized electricity = net kWh × 3.6 MJ/kWh × allocation share / accepted output mass	readings; allocation; output mass	MJ/kg reference product
calc_mass_reconciliation	completeness	Reconcile accepted product + each waste + work-in-progress change against all material/component inputs; investigate/disclose residual rather than creating an unspecified balancing flow.	atomic inputs; product; wastes; work-in-progress	documented residual	eu-pef-method-2021

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_identity_and_architecture	product/components	Record model, instrument type, architecture, sensing/indication principle, grade/model, and state; add actual BOM exchanges atomically.	BOM, product/supplier specification, Tiangong UUIDs
dq_measurement_traceability	mass, electricity, calibration, waste	Use calibrated or bill-reconciled instruments and link records to one production period.	certificates, invoices, meter/scale logs, calculations
dq_temporal_and_site_coverage	reporting period	Cover all included sites for representative 12 months or disclose the complete shorter campaign and limitations.	site list, calendar, reconciliation
dq_completeness	inventory	Reconcile materials/components, product, rejects, wastes, and work-in-progress; add every missing exchange atomically.	mass balance, BOM/ERP, waste records
dq_functional_conformity	released product	Retain test/calibration procedure, criteria, results, and conformity status; taximeters retain distance/time and fare-function evidence.	test/calibration/release records; oiml-r21-2007-taximeters; samr-compulsory-verification-catalogue-2020 where applicable
dq_background_compatibility	purchased input datasets	Check technology, geography, time, and state; disclose proxies/gaps.	dataset metadata; eu-pef-method-2021

9. Validation Rules

rule_id	applies_to	rule	source_ids
validation_reference_flow	reference product	Confirm exactly 1 kg accepted unpackaged product and matching reference UUID/property/unit group plus all qualifiers.	un-cpc-3-0-structure-2025
validation_process_coverage	foreground boundary	Confirm onsite forming/board work, assembly, programming, testing/calibration, rework/rejects, and packaging coverage.	eu-pef-method-2021
validation_atomic_inventory	all exchanges	Confirm each row is one concrete exchange with compatible UUID, property, unit, state, and route condition; reject umbrellas and treatment-service substitutions.
validation_mass_and_energy	quantities	Recalculate denominator, count-to-mass factors, electricity conversion, allocations, and residual.	eu-pef-method-2021
validation_conditional_rows	architecture/route	Confirm absent common rows are not_applicable with evidence and every additional actual exchange is added atomically.
validation_conformity_evidence	performance	Confirm release records demonstrate declared performance and applicable conformity regime.	oiml-r21-2007-taximeters; samr-compulsory-verification-catalogue-2020
validation_boundary_and_allocation	exclusions/upstream/shared burdens	Confirm upstream links, post-gate exclusions, waste destinations, allocation drivers, and gaps are disclosed.	eu-pef-method-2021

10. Published Dataset Profile

Field	Value
dataset_role	Foreground manufacturing dataset for a declared counter, indicator, distance/speed instrument, tachometer, pedometer, taximeter, or stroboscope
downstream_use	May be a secondary_dataset and used as a background_dataset for systems consuming the declared instrument
allowed_use	LCA with compatible function, architecture, performance, geography, technology, market state, period, packaging, and upstream datasets
excluded_use	Comparative assertions without functional equivalence; excluded instruments/devices; unmodelled use/maintenance/end-of-life claims; silent proxies
required_metadata	PCR id/version; product model/type; function/performance; architecture; sensing/display; power source; product/packaging mass; sites/geography; period; onsite/outsourced steps; electricity; component/waste identities and destinations; allocation; sources/upstream versions
required_quality_disclosure	Calibration/measurement evidence; BOM/mass-balance completeness; temporal/site coverage; conformity evidence; allocations; proxy/gap register; uncertainty/exclusions; unresolved range-evidence status
update_trigger	Material change in architecture, BOM, site, supplier/upstream dataset, route, test procedure, electricity mix, allocation, packaging, waste destination, conformity, or reporting period

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-0-structure-2025	Official guidance (official_guidance)	United Nations Statistics Division, CPC Version 3.0 Structure, code 48264, 2025. https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csv (retrieved 2026-09-07)	Classification identity and category boundary
eu-pef-method-2021	Official guidance (official_guidance)	European Commission, Commission Recommendation (EU) 2021/2279, Environmental Footprint methods. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02021H2279-20211230 (retrieved 2026-09-07)	Manufacturing boundary, upstream inputs, waste, allocation, collection, quality, validation
oiml-r21-2007-taximeters	Standard (standard)	International Organization of Legal Metrology, OIML R 21:2007, Taximeters. https://www.oiml.org/en/files/pdf_r/r021-e07.pdf/@@download/file/R021-e07.pdf (retrieved 2026-09-07)	Taximeter function, distance/time signal, calibration and testing
samr-compulsory-verification-catalogue-2020	Official guidance (official_guidance)	State Administration for Market Regulation, Catalogue of Measuring Instruments Subject to Compulsory Administration, Announcement No. 42 of 2020. https://www.samr.gov.cn/cms_files/filemanager/samr/www/samrnew/samrgkml/nsjg/jls/202010/W020201027321582061939.pdf (retrieved 2026-09-07)	Chinese terminology and verification/conformity disclosure for vehicle speed instruments and taximeters