Vehicle inspection departments and organisations rely on accurate equipment to assess reliability and driving safety. Regular verification and calibration are needed, but their purposes differ.
Definitions
Periodic verification
The historical source describes verification as a metrological examination under the relevant laws and regulations, keeping instrument accuracy within permitted limits. Inspection lines must be verified and calibrated before service and verified periodically thereafter. Equipment is placed in service after a satisfactory verification result.
Calibration
Calibration may be scheduled or unscheduled. Scheduled internal or external calibration follows the organisation's prescribed timetable. Internal calibration uses available inspection equipment; external calibration uses master standards, high-accuracy gauges or an instrument calibration organisation. Unscheduled calibration is performed when equipment develops faults or changes during operation. Newly purchased equipment also requires timely calibration and acceptance.
Differences
Purpose
Verification is a comprehensive assessment of whether inspection and measuring instruments meet the specified requirements. The source describes it as part of top-down dissemination of measurement values. Calibration evaluates indication error against a measurement standard, described as a bottom-up process supporting accurate measurement values.
Scope
Verification comprehensively examines the measurement device and relevant prescribed items. Calibration focuses on indication error, with its scope selected according to actual circumstances and needs.
Nature
The article describes verification as a compulsory legal-metrology activity whose procedures and intervals follow applicable requirements and legislation. Calibration is described as voluntary, allowing an inspection organisation to establish its own rules, procedures, intervals and methods in line with its needs.
Maintaining verification and calibration supports reliable and safe inspection results. Luoyang Naiou Electric designs and manufactures accurate vehicle performance equipment. Please leave an enquiry or contact customer service.