1

MEASURING AND TEST EQUIPMENT

CALIBRATION

Approved for Public Release

Calibration 2

Definitions

• Metrology

• Measuring & Test Equipment (M&TE)

• Calibration

• Measurement Standard

• Accuracy and Precision

Approved for Public Release

Calibration 3

Calibration System

• MIL-STD-45662 Military Standard – Calibration System Requirements.

• ISO 10012 – Measurement Management Systems – Requirements For Measurement Processes And Measuring Equipment.

• ANSI Z540 – Calibration & Measurement & Test Equipment – General Requirements

• Must Be An Integral Part Of The Quality System

Approved for Public Release

Calibration 4

Suggested Practices

• Written Description Of The Calibration System

• Listing Of All Standards Used

• Established Calibration Intervals

• Mandatory Recall Of Inspection And Test Equipment

• Measuring And Test Equipment Properly Identified To Reflect Calibration Status

Approved for Public Release

Calibration 5

Suggested Practices (cont’d)

• Maintain Historical Records Of Inspection And Test Equipment Calibration

• Utilize Standards Whose Accuracy Is Certified As Traceable To U.S. Or International Standards

• Written Calibration Procedures, Which Specify The Accuracy Of The Equipment Being Calibrated And The Accuracy Of The Standards Used

Approved for Public Release

Calibration 6

Sample Calibration Record2007 GAGE CALIBRATION RECORD

 

Gage Asset No. Location

Operator Number

Significant Dimensions Cycle Source

Date Due

Date Complete

CALIPERS C12456#1

Extruder 108 6 inch 6 moGage Block N-07 10/15/07

  C12458#1

Extruder 12 12 inch 6 moGage Block N-07 10/17/07

  C12462#2

Extruder 320 6 inch 6 moGage Block N-07 10/21/07

CNC N11052CNC house 12 0 to 12' 12 mo Outside J-07 5/22/07

MICROMETERS M13465 Press #1 119 0 to .385" 9 moGage Block D-07 11/14/07

  M13466 Press #2 318.500

to .750" 9 moGage Block D-07 11/22/07

  M13467 Press #3 289 0 to .385" 9 moGage Block D-07 11/9/07

  M13466 Press #2 318.500 to .750" 9 mo

Gage Block D-07 11/22/07

Calibration 6Approved for Public Release

Calibration 7

Suggested Practices (cont’d)

• Utilize Standards That Have A Higher Accuracy Level Than The Accuracy Requirements Of The Equipment Being Calibrated

• Control Of Outside Calibration Sources• Environmental Controls• Out Of Tolerance Conditions• Control Of Inactive M&TE

Approved for Public Release

Calibration 8

Suggested Practices (cont’d)

• Use Of Tamper Proof Seals

• Storage And Calibration Facilities

• Customer Furnished M&TE

• Employee Owned M&TE

• M&TE Must Be Adequate To Permit Reliable Inspections

Approved for Public Release