Test methods are used for Phenolic Yellowing- 1. ISO 105-X18 2. M&S C20B 3. Tesco TM/137/01 4. Adidas Test Procedure 5.10 Test procedure- A standard test package consists of five test specimens and one control fabric - each separated by a glass plate - making a total of seven glass plates. Each package is wrapped in BHT-free polythene film. The packages are closed and sealed with ordinary adhesive tape. To ensure uniform contact between the test papers and the test specimens, the packages are placed in a Perspirometer. The pressure is standardised by the application of a weight. Place the persoirometer in incubator at a temperature of 50°C ± 3°C. The treatment time is 16 hours. At the end of the test, the Perspirometers are removed from the incubator, the test packages are taken out and are allowed to cool before unwrapping. The specimens are then compared with their originals, and the intensity of yellowing is assessed with a Grey Scale for Staining.
Calibration of Metal Detection Machine
Calibration of Metal Detection Machine Conveyor detectors should be calibrated to 1.0-1.2 mm/customer’s standard ferrous object detection. The 9 Point calibration ensures that the equipment is functioning correctly and operating at the correct sensitivity (1.0, 1.2mm or as per customer’s standard). • The 9 Point calibration must be done a minimum of 2 times per shift or every time when the machine is out of power/switched off by a certified and trained operator. It is recommended to do it every hour. • Proper documentation of calibration should be maintained. Tools Required For Calibration Metal/ needle detector test card and stand The procedure of Metal Detection Calibration 1. The 9 Point Calibration check on the detector is done by dividing the metal detector conveyor belt into 3 zones. 2. The Calibration Card, supplied by machine vendor, should be passed through each of these zones at three different height levels. ...
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