DAHO (주)다호 트로닉

What is Calibration?

The process of establishing the relationship between the measuring instrument and the standard by comparing the displayed value of the measuring instrument with the calibration standard.

It refers to a series of operations that establish the relationship between a value determined by a standard and a value determined by a measuring instrument, standard, material scale, or measurement system under specific conditions.

Under specified conditions,

  1. The first step is to establish a relationship between the positive value provided by the measurement standard (including the uncertainty of measurement) and the corresponding indication (including the associated measurement uncertainty).
  2. The second step is to use the information from the first step to establish a relationship to obtain the measurement results from the readings (measurement glossary).

Why is the calibration necessary?

Periodic calibration of the weighing / measuring instrument reduces the defect of the products you produce and improves the product performance.

How does measurement benefit the enterprise?

  • It enables efficient quality control in the production process.
  • It enables the development of new products with high functionality.
  • It guarantees the reliability for manufacturers and products.
  • It ensures the compliance with various standards and regulations.

Why is periodic calibration necessary?

  • Measurements are already part of our lives and must be performed accurately, and periodic calibration of weighing / measuring instruments is essential.
  • The use of accurate weighing / measuring instruments is directly linked to the benefits of manufacturers and consumers.

Negative effects from an inaccurate measuring instrument

  • For manufacturer: Causes additional costs due to mass production of defective products
  • For consumer: May purchase foods/groceries with inaccurate NET weight, frequent breakdown and insufficient stability of various products
  • For medical field: Suffering and additional burden of medical expenses from misdiagnosis

Operating standards of accreditation scheme(conformity assessment system team of the Korea Standards Institution)

ISO / IEC 17011: Conformity assessment - General requirements for accreditation scheme performing accreditation of conformity assessment organization

Accreditation standards of the calibration laboratory

Document Code Description
ISO/IEC 17025 Manual/ Guidance
KOLAS-G-009 Guidance for Interpretation on KS Q ISO/IEC 17025
KS Q ISO/IEC 17025 General requirement for test and calibration institute
KOLAS SR-008 Guidance for conducting on-site calibration
KOLAS G-001 Guidelines for the Use of Accreditation Mark and Expression of Accredited Organizations
KOLAS G-002 Guidelines for Estimating and Expressing the Uncertainty of Measurement Results
KOLAS G-004 Guidelines for Calculating, Maintaining and Managing Calibration and Measurement Capability (CMC)
KOLAS G-005 Guidelines for Estimation of Uncertainty of Measurement in the Testing
KOLAS G-007 Guidelines for Internal Audit
KOLAS G-008 Guidelines for Management Review
KOLAS R-002 Regulations for Accreditation of Testing Laboratories and Inspection Bodies
KOLAS R-003 Regulations for Accreditation of Testing Laboratories and Inspection Bodies
KOLAS R-004 Regulations for Accreditation and Assessment of CABs
KOLAS R-005 Regulations for Registration and Qualification of Assessor and Technical Expert
KOLAS R-006 Regulations for Accreditation of Proficiency Testing Providers
KOLAS R-007 Regulations for Designation of Training Institute and Management of Curriculum
KOLAS R-008 KOLAS Policy on Traceability of Measurement Result