Hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers

1. Scope and Applicability

This PCR governs foreground manufacturing data packages for finished hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers, and psychrometers. It covers analogue, liquid-in-glass, mechanical, electrical, and electronic variants when the declared product is within this semantic category. The data package shall identify the instrument family and sensing principle rather than treating the category-level production mix as a claim that all variants have the same bill of materials or manufacturing route.

The default foreground boundary ends at the manufacturing-plant gate after assembly, calibration or performance testing, and packaging. Distribution, installation, use, maintenance, and end-of-life are excluded from this foreground package unless a study explicitly extends the boundary. Upstream production of purchased materials, components, energy carriers, packaging, and treatment services is represented by linked upstream datasets.

This PCR excludes instruments for measuring or checking flow, level, pressure, or other variables of liquids or gases that fall outside the named instrument families; physical or chemical analysis instruments; medical sphygmomanometers; automatic regulating or controlling equipment; and separately supplied parts and accessories. A product crossing one of those boundaries requires a separately reviewed PCR or explicit proxy disclosure.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.medical-appliances-precision-and-optical-instruments-watches-and-clocks.hydrometers-and-similar-floating-instruments-thermometers-pyrometers-barometers-hygrome-9da9d72c
classification_refs	CPC 3.0: 48251 (exact classification reference; mapping acceptance is governed separately)
covered_products	Hydrometers and similar floating instruments; contact and non-contact thermometers; pyrometers; barometers; hygrometers; psychrometers; analogue, mechanical, electrical, and electronic variants within this semantic category
excluded_products	Flow, level, and general pressure measuring instruments outside the named families; physical or chemical analysis instruments; medical sphygmomanometers; automatic controllers; navigational instruments; parts and accessories sold separately
representative_product	Declared production mix of finished instruments in the covered families, with product-family and sensing-principle composition reported
production_route	Purchased or on-site fabricated sensing elements, housings, displays, electronics, glass or metal bodies, and filling media; assembly; calibration and performance testing; finishing where applicable; packaging
market_state	Finished product, manufactured; production mix, at plant

3. Reference Flow

Field	Value
What	Finished instrument within the covered category, at the manufacturing-plant gate
How much	1 kg net mass of conforming finished instrument, excluding separately inventoried packaging
How well	Declared instrument family, sensing principle, measuring interval, accuracy or maximum permissible error, resolution, calibration or verification status, and applicable product specification
How long or cycle	Production represented by the declared reporting period or production campaign; use-stage service life is outside the default foreground boundary
reference_flow_link	1 kg of the declared reference product flow

Field	Value
Reference amount	1 kg
Reference product flow	Hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers 7d4fdf4e-5846-4fc5-b373-e360c312974b
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 family; sensing principle and measuring medium; analogue or electrical/electronic design; measuring interval; declared accuracy or maximum permissible error and resolution; calibration or verification status; mercury-added status; net product mass; production geography and reporting period; packaging inclusion status

When constructing a foreground data package, the items listed in Required qualifiers must be declared in dataset metadata, process notes, reference flow comment, product description, or an equivalent data package field. Missing required qualifiers make the reference flow definition incomplete for that data package.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_mass_basis	reference product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Normalize the inventory to 1 kg net mass of conforming finished instruments. Exclude separately inventoried packaging from the reference-product mass.
item_to_mass_conversion	production and shipment records stated in pieces	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Convert item counts using measured net mass by product family and lot. Retain count, sampling method, weighed sample, and conversion factor; do not use an uncited category-average item mass.
energy_conversion	purchased electricity and fuels	Energy	kWh or MJ	Preserve the metered or invoiced unit and conversion factor. Use 1 kWh = 3.6 MJ only when a common energy unit is required, and do not mix fuel mass or volume with energy without a documented factor.
calibration_result_identity	calibration and performance-test records	Declared measurand and measurement unit	product-specific	Record the measurand, measuring interval, test points, reference standard, indication or error result, measurement uncertainty where reported, acceptance criterion, and pass/rework/reject decision for the tested instrument family.

5. System Boundary

rule_id	Applies to	Rule	source_ids
boundary_manufacturing_gate	foreground manufacturing system	Include on-site component fabrication when performed, instrument assembly, filling or charging where applicable, cleaning and finishing where applicable, calibration and performance testing, rework, packaging, on-site utilities, direct emissions, and waste handling through transfer at the manufacturing-plant gate.	eu-pef-2021
boundary_upstream_inputs	purchased products and services	Link purchased materials, components, energy carriers, packaging, calibration media, and waste-treatment services to upstream datasets with technology, geography, and time representativeness disclosed. Do not absorb their upstream burdens into an undocumented cut-off.	eu-pef-2021
boundary_completeness	all foreground processes	Record all material and energy inputs, product and co-product outputs, waste, wastewater, and measured or reportable direct emissions that cross each foreground process boundary. Document exclusions and their justification.	eu-pef-2021
boundary_mercury	mercury-added instruments or components	Identify intentionally added mercury and mercury compounds. Include mercury input, contained product output, spills or losses, and mercury-containing waste as separate records where such manufacture is lawful and applicable; this PCR does not authorize manufacture, import, export, or an exemption.	minamata-mercury-2024
boundary_electronic_variants	electrical or electronic instruments	For electrical or electronic variants, retain a bill of materials and applicable restricted-substance or exemption declarations for monitoring and control instruments; record actual material masses rather than treating legal concentration limits as inventory amounts.	eu-rohs-2011-65

Boundary Abstraction

Field	Value
declared_starting_condition	Purchased materials and components at the manufacturing-site receiving gate, plus on-site fabricated components whose upstream material inputs enter the foreground boundary
starting_condition_role	Upstream product inputs to foreground instrument manufacturing
product_classification_scope	Finished hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers, and psychrometers within the declared product-family mix
recursive_input_rule	A purchased finished or partly finished instrument within the same semantic category is recorded as a product input with its own upstream dataset and declared processing state; do not recursively reconstruct it as another instance of this foreground package.
upstream_dataset_requirement	Use specific upstream datasets for major materials, sensing elements, electronics, batteries where included, glass or metal bodies, filling media, packaging, energy, transport to site when in scope, and treatment services; disclose any proxy.
disclosure	Declare product-family shares, sensing principles, on-site versus purchased component scope, mercury-added status, electronic content, calibration basis, reporting period, geography, packaging treatment, exclusions, and allocation choices.

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
p_component_fabrication	On-site component fabrication and finishing	conditional	Include when sensing elements, glass or metal bodies, housings, scales, electronic assemblies, filling operations, coatings, or other components are fabricated or finished on site.	foreground component production	mass of accepted components transferred to assembly
p_instrument_assembly	Instrument assembly	required	Always include final mechanical, glass, electrical, or electronic assembly and any associated cleaning or filling operation.	foreground product assembly	mass of assembled instruments transferred to calibration and testing
p_calibration_testing	Calibration, verification, and performance testing	required	Always include the product-specific calibration or verification and final acceptance testing used to release conforming products.	foreground quality assurance	net mass of conforming instruments released
p_packaging	Product packaging and factory-gate release	required	Always include primary, secondary, and transport packaging applied before the declared plant gate.	foreground packaging and release	1 kg net finished instrument output, with packaging reported separately

Process: On-site component fabrication and finishing (p_component_fabrication)

Inputs

Product flows

Materials and purchased component inputs (component_material_inputs)

Record each material or purchased component separately by product family, including glass, metals, polymers, sensing elements, electronics, displays, wiring, batteries where included, filling media, coatings, adhesives, and fasteners that cross this process boundary.

• Selected flow: Select the matching Tiangong product flow for each recorded material or component; no category-wide UUID is fixed by this PCR
• Flow property / unit: Mass / kg
• Amount rule: measured issue minus documented return for accepted production, with inventory change reconciled
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg of accepted components transferred to assembly
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_component_records
• Sources: eu-rohs-2011-65 when restricted-substance declarations apply

Mercury or mercury-added component input (mercury_input)

Record intentionally added mercury or a mercury-containing component separately only for an applicable and lawful product route. Do not infer zero mercury from the absence of a purchasing line.

• Selected flow: Select the matching Tiangong mercury or mercury-containing component product flow after identity review; no UUID is fixed by this PCR
• Flow property / unit: Mass / kg
• Amount rule: measured or supplier-certified mercury mass entering the process, reconciled to product, loss, and waste records
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg of accepted components transferred to assembly
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_component_records
• Sources: minamata-mercury-2024

Fabrication electricity (component_fabrication_electricity)

Record metered electricity used by forming, machining, glass working, electronics manufacture, cleaning, filling, finishing, and local auxiliaries included in this process.

• Selected flow: Select the matching location- and voltage-specific electricity product flow
• Flow property / unit: Energy / kWh
• Amount rule: process-metered electricity or a documented allocation from facility meters
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg of accepted components transferred to assembly
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_energy_records
• Sources:

Process water and fabrication chemicals (component_fabrication_water_chemicals)

Record water and each material process chemical separately when used for cleaning, etching, plating, coating, glass working, filling, or other on-site component operations.

• Selected flow: Select the matching Tiangong product flow for water and for each process chemical
• Flow property / unit: Mass or volume / kg or m3, preserving the source record unit
• Amount rule: metered, weighed, or purchasing-and-inventory-reconciled consumption by process
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg of accepted components transferred to assembly
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_component_records
• Sources:

Waste flows

Fabrication scrap and hazardous residues (component_fabrication_waste)

Record metal, glass, polymer, electronic, coating, chemical, and mercury-containing wastes separately by treatment route. Mercury-containing waste shall not be combined with ordinary scrap.

• Selected flow: Select the matching Tiangong waste flow for each material and treatment route
• Flow property / unit: Mass / kg
• Amount rule: measured transferred waste plus documented inventory change, split by waste type and destination
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg of accepted components transferred to assembly
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_emission_records
• Sources: minamata-mercury-2024 for mercury-containing waste segregation

Elementary flows

Outputs

Product flows

Accepted fabricated components (accepted_components)

Record the measured mass of accepted components transferred to assembly, split by component family when internal mass balance requires it.

• Selected flow: Internal intermediate product flow matching the fabricated component identity
• Flow property / unit: Mass / kg
• Amount rule: measured accepted component mass transferred to assembly
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg of accepted components transferred to assembly
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_production_output_records
• Sources:

Waste flows

Elementary flows

Reportable fabrication emissions (component_fabrication_emissions)

Record measured, monitored, or permit-reported emissions from on-site combustion, coating, plating, glass working, filling, and cleaning operations. Keep pollutant identities and measurement bases separate.

• Selected flow: Select the matching Tiangong elementary flow for each emitted substance and compartment
• Flow property / unit: Mass / kg
• Amount rule: measured or calculation-supported site emission attributable to the process
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg of accepted components transferred to assembly
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_emission_records
• Sources:

Process: Instrument assembly (p_instrument_assembly)

Inputs

Product flows

Fabricated and purchased components for assembly (assembly_component_inputs)

Record accepted on-site components and purchased components entering final assembly, split by product family and component identity.

• Selected flow: Select the matching Tiangong product flow for each component; use the internal accepted-component flow for on-site transfers
• Flow property / unit: Mass / kg
• Amount rule: measured component issue minus documented returns, reconciled to assembled product and assembly waste
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg of assembled instruments transferred to calibration and testing
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_component_records
• Sources:

Assembly electricity and consumables (assembly_energy_consumables)

Record assembly electricity and material consumables such as solders, adhesives, seals, fasteners, cleaning agents, and protective gases separately when they cross the process boundary.

• Selected flow: Select the matching Tiangong product flow for electricity and each consumable
• Flow property / unit: Energy or mass / kWh or kg
• Amount rule: metered electricity and measured or inventory-reconciled consumable use
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg of assembled instruments transferred to calibration and testing
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_energy_records
• Sources:

Waste flows

Elementary flows

Outputs

Product flows

Assembled instruments awaiting calibration (assembled_instruments)

Record the net instrument mass transferred to calibration and testing, excluding packaging.

• Selected flow: Internal assembled-instrument product flow
• Flow property / unit: Mass / kg
• Amount rule: measured net mass of assembled instruments transferred to calibration and testing
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg of assembled instruments transferred to calibration and testing
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_production_output_records
• Sources:

Waste flows

Assembly rejects and scrap (assembly_waste)

Record rejected components, spilled filling media, offcuts, cleaning residues, and failed assemblies separately by material and treatment destination.

• Selected flow: Select the matching Tiangong waste flow for each waste identity and treatment route
• Flow property / unit: Mass / kg
• Amount rule: measured waste transferred from assembly, net of documented internal rework returns
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg of assembled instruments transferred to calibration and testing
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_emission_records
• Sources:

Elementary flows

Process: Calibration, verification, and performance testing (p_calibration_testing)

Inputs

Product flows

Assembled instruments for testing (instruments_for_testing)

Record the net mass and item count by product family entering calibration, verification, and final performance testing.

• Selected flow: Internal assembled-instrument product flow
• Flow property / unit: Mass / kg
• Amount rule: measured net mass entering testing, with item counts retained by product family
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg of conforming instruments released
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_calibration_test_records
• Sources: wmo-no-8; ilac-p10-2020

Calibration and test energy and media (calibration_test_inputs)

Record electricity, controlled-temperature or humidity utilities, calibration liquids, reference media, and consumed test materials when they cross the process boundary.

• Selected flow: Select the matching Tiangong product flow for each energy or material input
• Flow property / unit: Energy, mass, or volume / kWh, kg, or m3
• Amount rule: metered or measured use attributable to calibration and testing
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg of conforming instruments released
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_calibration_test_records
• Sources: wmo-no-8

Waste flows

Elementary flows

Outputs

Product flows

Conforming calibrated or verified instruments (conforming_instruments)

Record instruments released after product-specific acceptance testing. Retain test points, reference standards, results, uncertainty where reported, and the acceptance decision.

• Selected flow: Internal conforming-instrument product flow
• Flow property / unit: Mass / kg
• Amount rule: measured net mass of instruments with a documented pass decision
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg of conforming instruments released
• Basis kind: Process output (process_output)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_calibration_test_records
• Sources: wmo-no-8; ilac-p10-2020

Waste flows

Test rejects and non-recoverable failures (calibration_test_rejects)

Record failed units sent to waste treatment separately from units returned to a documented rework loop.

• Selected flow: Select the matching Tiangong waste flow by failed product material and treatment route
• Flow property / unit: Mass / kg
• Amount rule: measured net mass of failed units transferred to waste treatment
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg of conforming instruments released
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_calibration_test_records
• Sources:

Elementary flows

Process: Product packaging and factory-gate release (p_packaging)

Inputs

Product flows

Conforming instruments to packaging (conforming_instruments_to_packaging)

Record the net mass of conforming instruments transferred from final acceptance to packaging.

• Selected flow: Internal conforming-instrument product flow
• Flow property / unit: Mass / kg
• Amount rule: measured net mass transferred to packaging
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg of finished reference product released
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_production_output_records
• Sources:

Packaging material inputs (packaging_material_inputs)

Record primary, secondary, and transport packaging separately by material and reusable status. Packaging mass is not included in the 1 kg reference-product mass.

• Selected flow: Select the matching Tiangong packaging material product flow
• Flow property / unit: Mass / kg
• Amount rule: measured or purchasing-and-inventory-reconciled packaging consumption
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg of finished reference product released
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_records
• Sources: eu-pef-2021

Waste flows

Elementary flows

Outputs

Product flows

Finished instruments at plant gate (finished_instrument_output)

This is the reference product output. Report net instrument mass excluding separately inventoried packaging and retain the product-family mix and required qualifiers.

• Selected flow: Hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers 7d4fdf4e-5846-4fc5-b373-e360c312974b
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: 1 kg net mass of conforming finished instrument output
• Value mode: Fixed value (fixed_value)
• Specificity: Generic (generic)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Identity reference (identity_reference)
• Collection protocol:
• Sources:

Waste flows

Packaging process waste (packaging_waste)

Record offcuts, damaged packaging, and discarded protective materials separately by material and treatment route.

• Selected flow: Select the matching Tiangong waste flow for each packaging waste and treatment route
• Flow property / unit: Mass / kg
• Amount rule: measured packaging waste transferred to treatment
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg of finished reference product released
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_emission_records
• Sources:

Elementary flows

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_avoid	shared foreground processes and mixed product families	First avoid allocation through process subdivision, separate metering, separate production records, or expansion of the recorded process boundary where justified.	eu-pef-2021
allocation_physical	remaining shared utilities, equipment time, and consumables	When subdivision is not practicable, use a documented causal physical driver such as machine time, metered energy, processed mass, test duration, or item count only when that driver represents resource use. Do not default to mass for calibration or test activities whose burden is driven by time or test protocol.	eu-pef-2021
allocation_economic	multifunctional processes without a defensible physical relation	Use economic allocation only when no defensible physical relation is available. Record prices, currency, geography, time basis, and sensitivity to the allocation choice.	eu-pef-2021
allocation_scrap_rework	scrap, recovered material, and reworked instruments	Report gross material input, internal rework return, externally recovered material output, and treatment separately. Apply one declared recycled-content and end-of-life convention consistently and do not credit internal scrap twice.	eu-pef-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	p_component_fabrication; p_instrument_assembly	materials, components, filling media, chemicals, and mercury where applicable	purchasing, BOM, stores issue/return, supplier declaration, batch record	material or component id; product family; lot; issued mass; returned mass; inventory change; supplier; composition; mercury status; restricted-substance status	reconcile BOM and lot records to stores and supplier documents	kg, with original unit retained	each lot; aggregated for the reporting period	full declared reporting period or representative campaign	each included manufacturing site	sum net consumed quantities by material/component and product family, then allocate only under section 7	approved BOM; weigh records; inventory reconciliation; supplier composition or compliance declaration
cp_energy_records	p_component_fabrication; p_instrument_assembly; p_calibration_testing	electricity and fuels	meter, submeter, invoice, fuel issue log	meter id; start/end reading; fuel quantity; unit; process; downtime; allocation driver	prefer process meters; otherwise reconcile facility totals and document allocation	kWh, MJ, kg, or m3 as recorded	continuous or each billing period	full declared reporting period or representative campaign	each included site and process	subtract excluded uses and normalize allocated process totals to the applicable process output	meter calibration or invoice; reconciliation to site total; allocation worksheet
cp_production_output_records	p_component_fabrication; p_instrument_assembly; p_packaging	accepted components, assembled units, and finished output	production, transfer, weighing, and shipment record	product family; sensing principle; lot; item count; gross mass; tare; net mass; accepted, rework, and reject status	weigh by lot or apply a documented lot-specific item-to-mass conversion	kg and item	each lot	full declared reporting period or representative campaign	each included production and release point	sum accepted net mass by product family; exclude packaging from reference-product mass	calibrated scale record; lot genealogy; release and shipment reconciliation
cp_calibration_test_records	p_calibration_testing	calibration, verification, test inputs, releases, rework, and rejects	calibration certificate, test report, equipment log, acceptance record	instrument family; serial/lot; measurand; measuring interval; test points; reference standard; reference certificate; indication/error; uncertainty where reported; criterion; decision; test duration; energy/material use	execute the declared product-specific procedure and retain traceability evidence	measurand-specific unit, kg, item, kWh	each tested unit or statistically justified lot	full declared reporting period or representative campaign	each included calibration/test line	aggregate pass, rework, and reject mass and resource use by product family without averaging incompatible measurands	procedure revision; reference-standard identity; calibration status; traceability chain; reviewer approval
cp_packaging_records	p_packaging	packaging materials	packaging BOM, purchasing, issue/return, reusable-packaging log	packaging material; supplier; lot; issued and returned mass; recycled content where evidenced; reusable cycles; product family	reconcile packaging BOM and inventory to released product	kg	each lot; aggregated for reporting period	full declared reporting period or representative campaign	each included packaging line	sum net packaging consumed by material and reusable status per kg reference product	packaging specification; weigh record; inventory reconciliation
cp_waste_emission_records	all included processes	waste, wastewater, and direct emissions	waste transfer note, weighbridge, wastewater meter/sample, emission monitor, permit report	waste or pollutant identity; hazardous status; mercury content where applicable; mass/volume; compartment; destination; treatment; date; process	use measured transfer or monitoring data; use a documented calculation only when direct measurement is unavailable	kg, m3, or pollutant-specific unit	each transfer or monitoring interval	full declared reporting period or representative campaign	each included site and process	sum by identity, compartment, hazardous status, and destination; reconcile mercury and major material balances	transfer document; laboratory result; monitor calibration; permit report; mass-balance reconciliation

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_net_reference_mass	finished reference product	Sum measured conforming net instrument mass; where item counts are converted, multiply count by the measured lot-specific mean net mass; exclude packaging mass.	conforming item count; lot-specific net mass; direct lot weights; packaging tare	kg net finished reference product
calc_normalized_inventory	every foreground inventory row	Divide the allocated reporting-period quantity by reporting-period kg net finished reference product, preserving the original record and conversion factor.	collected quantity; allocation result where applicable; net reference mass	quantity per kg reference product	eu-pef-2021
calc_process_mass_balance	fabrication, assembly, testing, and packaging	Reconcile opening inventory plus inputs with accepted output, rework transfer, waste, emissions, closing inventory, and documented measurement difference for each material family. Investigate rather than silently distributing an unexplained difference.	inventory; input; output; rework; waste; emission records	disclosed process mass balance and unexplained difference
calc_product_family_mix	category production mix	Divide conforming net output mass for each instrument family and sensing principle by total conforming net output mass; retain zero-production families as out of scope for the period.	family-level conforming net masses	declared production-mix shares
calc_allocation	shared foreground quantities	Apply the declared section 7 hierarchy and driver to the reconciled shared total, then verify allocated quantities sum to that total.	shared quantity; driver values; product-family outputs	allocated foreground quantities and allocation residual	eu-pef-2021

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_identity	reference product and product-family mix	Product names, instrument families, sensing principles, UUID references, and CPC context shall be internally consistent; CPC 48252/48253 instruments or separate parts shall not be silently included.	product specifications; BOM; classification review; release records
dq_temporal	all foreground data	State the reporting period and demonstrate that production, materials, utilities, waste, and output records cover the same period or document reconciled exceptions.	dated source records; production calendar; reconciliation
dq_completeness	all included processes	Demonstrate process and input/output completeness against the declared boundary, including rework, rejects, packaging, wastewater, direct emissions, and mercury-containing streams where applicable.	process map; mass and energy reconciliation; exclusion log; eu-pef-2021
dq_measurement	meters, scales, and test equipment	Retain equipment identity, unit, calibration status, data gaps, substitutions, and uncertainty information where available. Calibration evidence used to claim metrological traceability shall identify the documented chain and stated uncertainties.	calibration certificates; meter register; uncertainty or data-gap record; ilac-p10-2020
dq_calibration_performance	finished instrument acceptance	Retain product-specific measurand, range, test points, reference standard, result, criterion, and decision; do not merge incompatible instrument families into one performance claim.	calibration/test report; release approval; wmo-no-8
dq_supplier_upstream	purchased materials, components, and services	Record supplier, geography, technology, data period, product state, and proxy rationale for major upstream datasets.	supplier records; dataset metadata; proxy review
dq_mercury_electronics	mercury-added or electrical/electronic variants	Declare mercury-added status and applicable restricted-substance or exemption evidence. Treat legal applicability as jurisdiction- and date-specific and do not infer inventory mass from a legal limit.	supplier declarations; composition records; legal applicability review; minamata-mercury-2024; eu-rohs-2011-65

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_reference_identity	reference flow	The product flow UUID shall be 7d4fdf4e-5846-4fc5-b373-e360c312974b, the reference flow property UUID shall be 93a60a56-a3c8-11da-a746-0800200b9a66, the unit group UUID shall be 93a60a57-a4c8-11da-a746-0800200c9a66, and the reference unit shall be kg.
validate_required_qualifiers	foreground data package	Reject as incomplete any package that omits instrument family, sensing principle, measuring interval, accuracy or error declaration, calibration or verification status, mercury-added status, net mass basis, geography, reporting period, or packaging inclusion status.	wmo-no-8
validate_scope	product-category identity	Confirm that each included finished product is within the named instrument families. Flag flow/level/general pressure instruments, physical or chemical analysis instruments, medical sphygmomanometers, controllers, and separate parts for manual scope review.	un-cpc-3-0
validate_process_coverage	process inventory	Require assembly, calibration/testing, and packaging records; require component fabrication/finishing records when those operations occur on site; require upstream datasets for purchased components.	eu-pef-2021
validate_inventory_reconciliation	foreground totals	Confirm output mass, material balances, energy totals, waste transfers, and allocation totals reconcile to source records. Report unexplained residuals and data gaps; do not force them to zero.	eu-pef-2021
validate_calibration_traceability	calibration and performance testing	Confirm that claimed metrological traceability is supported by a documented unbroken calibration chain with stated uncertainties and a suitable reference service or documented accepted alternative.	ilac-p10-2020
validate_mercury_status	mercury-relevant products	Require an explicit mercury-added declaration. If mercury is present, require separate input, contained output, loss, waste, treatment, and jurisdiction/date applicability records; do not interpret this PCR as regulatory authorization.	minamata-mercury-2024
validate_electronic_variant	electrical or electronic products	Require the electrical/electronic applicability decision, material or supplier declaration, and any relied-on exemption identifier; do not convert substance limits into foreground quantities.	eu-rohs-2011-65

10. Published Dataset Profile

Field	Value
dataset_role	Foreground manufacturing dataset for a declared instrument family or disclosed category production mix
downstream_use	secondary_dataset; background_dataset
allowed_use	Manufacturing-footprint modelling at the declared plant gate; supply-chain inventory for a specified instrument family or disclosed production mix; downstream lifecycle models that add distribution, use, maintenance, and end-of-life explicitly
excluded_use	Unsupported comparison between instrument families or sensing principles; performance or legal-conformity certification; use-stage measurement claims; undisclosed proxy for CPC 48252/48253 instruments or parts; regulatory authorization for mercury-added products
required_metadata	canonical PCR id; reference UUIDs; instrument family and sensing principle; product-family mix; measuring interval; accuracy/error and resolution; calibration/verification status; mercury-added and electronic status; net mass basis; site geography; reporting period; technology route; packaging treatment; allocation; upstream datasets; exclusions
required_quality_disclosure	primary-data coverage; meter and scale status; calibration traceability; BOM and supplier-data completeness; mass, energy, waste, and allocation reconciliation; proxy use; data gaps; uncertainty information where available; legal-applicability date and jurisdiction for mercury or electronic restrictions
update_trigger	Change in product-family mix, sensing principle, mercury-added status, electronic architecture, major material or supplier, on-site fabrication scope, calibration/test procedure, energy system, packaging, allocation method, production geography, or applicable substance-control requirements

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-0	official_guidance	United Nations Statistics Division, Central Product Classification Version 3.0 structure and explanatory notes, https://unstats.un.org/unsd/classifications/Econ/CPC (retrieved 2026-08-10)	CPC 48251 category identity and exclusions from adjacent product scopes
eu-pef-2021	official_guidance	European Commission Recommendation (EU) 2021/2279 on the use of the Environmental Footprint methods, https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32021H2279 (retrieved 2026-08-10)	Functional-unit and reference-flow framing; manufacturing boundary; inventory completeness; primary data, allocation, packaging, and data-quality rules
wmo-no-8	official_guidance	World Meteorological Organization, Guide to Instruments and Methods of Observation (WMO-No. 8), 2021/2018 edition, https://community.wmo.int/site/knowledge-hub/programmes-and-initiatives/instruments-and-methods-of-observation-programme-imop/guide-instruments-and-methods-of-observation-wmo-no-8 (retrieved 2026-08-10)	Temperature, atmospheric-pressure, and humidity instrument qualifiers; testing, calibration, intercomparison, and quality-management records
ilac-p10-2020	official_guidance	ILAC-P10:07/2020, ILAC Policy on Metrological Traceability of Measurement Results, https://ilac.org/?ddownload=123220 (retrieved 2026-08-10)	Calibration traceability chain, stated uncertainty, suitable calibration service, and retained evidence
minamata-mercury-2024	standard	Minamata Convention on Mercury, Text and Annexes, October 2024 booklet, https://minamataconvention.org/en/documents/minamata-convention-mercury-text-and-annexes (retrieved 2026-08-10)	Identification and separate accounting of mercury-added barometers, hygrometers, thermometers, and related mercury-containing inputs and wastes; regulatory-applicability disclosure
eu-rohs-2011-65	standard	Directive 2011/65/EU on restriction of certain hazardous substances in electrical and electronic equipment, https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32011L0065 (retrieved 2026-08-10)	Conditional BOM, restricted-substance, and exemption declarations for electrical/electronic monitoring and control instrument variants