1.0 OBJECTIVE
To calibrate the equipment for reliable and accurate results.2.0 SCOPE
This procedure is applicable to calibrate box compression strength tester, installed in packing material testing area.
3.0 RESPONSIBILITY
3.1 Doing : Technical Assistant / Executive3.2 Checking : Executive /Manager
4.0 ACCOUNTABILITY
Head of the department.5.0 PROCEDURE
5.1 Frequency : Once in a monthSemi auto calibration :
5.1.1 Operate the instrument as per S.O.P.
5.1.2 On zero load, press ‘ZERO’ on the digital indicator.
5.1.3 Press and hold the ‘CAL’ button, situated at the rear of the indicator. The display will show 100 kg. Now slowly place 100 kg cast iron weight in any combination.
5.1.4 Press the ‘CAL’ button again. The display will show CAL – F. This denotes completion of calibration. Press the ‘CAL’ button once again. The display should show 100 ± 1kg.
5.1.5 Note down the observation in Annexure – I.
5.1.6 Remove the cast iron weights carefully.
5.2 Manual check calibration.
5.2.1 After completion of semiauto calibration take out 20 kg each cast iron weight from 100 kg & note the weight for 80 kg calibration. Similarly take out gradually each 20 kg of weight one after other & note the weight for 60, 40 & 20 kgs calibration.
5.2.2 Note down the observation in Annexure – I.
5.3 If instrument found out of calibration follow the SOP for Out of Calibration.
Related: SOP for Cleaning of Box Compression Strength Tester
6.0 ABBREVIATIONS
6.1 SOP - Standard Operating Procedure6.1 kg - kilogram
ANNEXURE-I
QUALITY CONTROL LABORATORY
CALIBRATION REPORT OF BOX COMPRESSION STRENGTH TESTER
PERFORMANCE DATE
|
DATE OF LAST PERFORMANCE DONE
|
NEXT DUE FOR
PERFORMANCE
|
INSTRUMENT DETAILS
| ||
INSTRUMENT NAME
| INSTRUMENT MAKE |
INSTRUMENT
IDENTIFICATION NO.
|
OBSERVATION
|
SEMI AUTO CALIBRATION
STANDARD WEIGHT
|
WEIGHT OBSERVED
|
LIMITS
|
100 Kgs
|
± 1 Kg
|
MANUAL CHECK CALIBRATION
STANDARD WEIGHT
|
WEIGHT OBSERVED
|
LIMITS
|
20 Kg
40 Kg
60 Kg
80 Kg
|
± 1 Kg
|
REMARK :
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