Calibration Certificate Issuance

1. Calibration Documents

Documents Certifying Instrument Traceability

If you require documents certifying the traceability of a measuring instrument, a set of three documents is applicable: an inspection certificate, a calibration certificate, and a traceability diagram.

Approach to inspection certificates and related accuracy guarantee

At Hioki, we ensure product quality through design verification during development and process control during production. The inspection certificate lists representative inspection items, but may not include every point a customer requests. Even in such cases, if the overall judgment is marked as “PASS,” the product meets all specified accuracy requirements for its full range, so no additional designation of inspection points is required.

Accuracy guarantee when using multiple products together

When using two or more products together (for example, a power meter and a clamp sensor), an overall judgment of “PASS” on each product’s inspection certificate indicates that the combined accuracy (the sum of each product’s accuracy) is guaranteed. Even without calibrating the combination as a set, individual calibration of each product ensures that the combination continues to meet accuracy specifications.

2. Paper Document Issuance (Fee Applies)

If you require paper copies, a three-document set (Test Report, a Calibration Certificate, and a Traceability Chart) will be available for issuance starting January 2026, for a fee.

Test Report	Sample(Japanese, English) *The calibration result value with "####..." in the inspection report is abnormal data like the out of the measurement range, etc.
Calibration Certificate	Sample(Japanese, English)
Traceability Chart	Calibration Equipment Sample(Japanese, English) Model-Specific(Standard calibration data set) Sample(Japanese, English)

• *Customer name and customer record number are not indicated on the calibration documentation for general calibration documents.Learn more

Hioki can also issue the following documents upon request

Traceability Chart (overall)	Sample(English)
ISO/IEC17025（JCSS）Calibration Certificate	Sample(English)
Standard calibration data set (Japanese only)	Reference standard calibration data Set of calibration documentation for Hioki’s top-level standards (which are linked to standards at external organizations) Intermediate standard calibration data Set of standard calibration data lying between applied standards and comparative standards Utilized standard calibration data Set of calibration data for standards used to calibrate Hioki products *Some products may not have intermediate standard calibration data
Utilized standard calibration data (Japanese only)	Set of calibration data for standards used to calibrate Hioki products

• Traceability Chart