Interpretation of Traceability andChange of Documents To Be Issued

ISO Office1

1 What is Metrological Traceability● Introduction
Traceability documents have been recognized and established as the essential
documents that “certify traceability”, which are now widespread in industries.
Documents Issued by Cosmo to “Certify Traceability”

Traceability Certificateof the standard(Charge-free)

Traceability Certificateof the product(Charged)

Calibration Certificateof the product(Charged)

Calibration Certificateof the standard(Charge)

These documents show that the standards with establishedtraceability were used or were used for calibration.

ISO Office2

1 What is Metrological Traceability
It's a mechanism to certify that measurement results are accurate.

It's an approach to conduct accurate calibrations by ILAC MRA-accredited
calibration laboratories with reference to the national meteorologicalstandards to determine where the measurement results stand whencompared with the references.

“Metrological Traceability” is defined as below in the ISO/IEC Guide 99:2007 International
vocabulary of metrology - Basic and general concepts and associated terms (VIM).

Property of a measurement result whereby the result can berelated to a reference through a documented unbroken
chain of calibrations, each contributing to the measurement
uncertainty.
ISO Office3

1 What is Metrological Traceability
It is realized by “6 elements”.

*Refer to NOTE 7 in 2.41 of the ISO/IEC Guide 99: 2007

(1) Unbroken calibration chain(2) Measurement uncertainty

Documented
measurement
procedure(3) Technical competence(Calibration technique)(4) Calibration intervals(5) Documented measurement
procedure

Metrologicaltraceability
to the SI(6) Metrological traceability to the SIISO Office

Unbrokencalibration
chain

MetrologicalTraceabilityCalibrationintervals

Measurement
uncertainty

Technicalcompetence(Calibrationtechnique)4

1 What is Metrological Traceability
It is becoming important to document and demonstrate the ability of
tracing the measurement result to higher standards through an
unbroken chain of calibrations.
These “6 elements” are most reliably and reasonably realized bycalibrations by ISO/IEC 17025-accredited “calibration laboratories”.
“Calibration certificates with ilac MRA mark”

issued by the calibration laboratories are the evidenceof “Metrological Traceability”.

Therefore, explanatory papers will no longer be required

ISO Office5

2 Change of Documents To Be Issued
Accordingly,

we will change the traceability
documents to be issued
as follows:ISO Office6

2 Change of Documents To Be Issued
Documents We Currently Provide with the Product(1) Traceability Certificate of the standard: Charge-free(2) Traceability Certificate of the product: Charged(3) Calibration Certificate of the product: Charged(4) Inspection Record of the product: Charge-free* (2) and (3) are charged and available when requested.

(1) Traceability Certificate of the standard(2) Traceability Certificate of the product(3) Calibration Certificate of the product

ISO Office

To Be
Discontinued
7

2 Change of Documents To Be Issued
Documents We Will Provide with the Product(1) Traceability Certificate of the standard(With the iLac MRA mark) :Charge-free(2) Inspection Record of the product:
Charge-free

Simplified diagrams areavailable.

For the customers who needtraceability system diagrams:

We will post the traceability
system diagrams on our website.

ISO Office8