MEASURING AND TEST EQUIPMENT CALIBRATION

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Definitions

• Metrology • Measuring & Test Equipment (M&TE) • Calibration • Measurement Standard • Accuracy and Precision Calibration 2

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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 Calibration 3

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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 Calibration 4

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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 Calibration 5

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Sample Calibration Record

CALIPERS CNC MICROMETERS

2007 GAGE CALIBRATION RECORD

Gage Asset No.

C12456 C12458 C12462 N11052 Location #1 Extruder #1 Extruder #2 Extruder CNC house Operator Number 12 108 12 320 Significant Dimensions 6 inch 12 inch 6 inch 0 to 12' Cycle 6 mo 6 mo 6 mo 12 mo M13465 M13466 M13467 M13466 Press #1 Press #2 Press #3 Press #2 119 318 289 318 0 to .385" .500 to .750" 0 to .385" .750" 9 mo 9 mo 9 mo Source Gage Block Gage Block Gage Block Outside Gage Block Gage Block Gage Block Gage Block Date Due N-07 N-07 N-07 J-07 D-07 D-07 D-07 D-07 Date Complete 10/15/07 10/17/07 10/21/07 5/22/07 11/14/07 11/22/07 11/9/07 11/22/07

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 Calibration 7

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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 Calibration 8

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