ISO 4647-2010 pdf free download

ISO 4647-2010 pdf free download.Rubber, vulcanized Determination of static adhesion to textile cord H-pull test
Caoutchouc vulcanisé — Determination de I’adhérence statique au cãblé textile — Essal d’arrachement en H.
B.1 Inspection
Before any calibration is undertaken, the condition of the items to be calibrated shall be ascertained by inspection and recorded in any calibration report or certificate. It shall be reported whether calibration is made in the gas-received condition or after rectification of any abnormality or fault.
It shall be ascertained that the apparatus is generally fit for the intended purpose, induding any parameters specified as approximate and for which the apparatus does not therefore need to be formally calibrated. If such parameters are liable to change, then the need for periodic checks shall be written into the detailed calibration procedures.
B.2 Schedule
Verificationlcalibration of the test apparatus is a normative part of this International Standard. The frequency of calibration and the procedures used are, unless otherwise stated, at the discretion of the individual laboratory, using ISO 18899 for guidance.
The calibration schedule given in Table B.1 has been compiled by listing all of the parameters specified in the test method, together with the specified requirement. A parameter and requirement can relate to the main test apparatus, to part of that apparatus or to an ancillary apparatus necessary for the test.
For each parameter, a calibration procedure is indicated by reference to ISO 18899, to another publication or to a procedure particular to the test method which is detailed (whenever a calibration procedure which is more specific or more detailed than that in ISO 18899 is available, it shall be used in preference).
The verification frequency for each parameter is given by the code-letter S, i.e. the standard interval as given in ISO 18899.
In addition to the items listed, some standards assume the use of normal” laboratory apparatus. e.g. timers, beakers, etc. These may need calibrating In accordance with the appropriate procedure given in ISO 18899. Also, there may be items specified in the relevant cited standard which have a dimension, for example a 250 ml flask. Where the size has no particular significance, other than convenience of use, these items will not need to be calibrated.
Most standards for the testing of materials require the test piece to be conditioned. This implies the use of a thermometer and, possibly, a hygrometer, both of which will require calibration. Standard conditioning and test temperatures and humidities cited in the relevant standard have not been repeated in the schedule.
Test piece dimensions are usually specified. This implies the use of dimension-measuring instruments which will require calibration. Test piece dimensions cited in the relevant standard have not been repeated in the schedule.ISO 4647-2010 pdf free download.