Leather softness testerHow to ensure the accuracy of test values

1、Leather softness testerPreparation of samples

1.1Sampling: Use a standard cutter or scissors to cut circular samples with a diameter of 60mm from different parts of the material to be tested (without scars, folds, or creases).

1.2Sample quantity: Take at least 3 samples from different parts of the tested material for testing.

1.3Before testing, place the sample in an environment with a temperature of 23 ± 2 ℃ and a relative humidity of 50 ± 5% for at least 24 hours before testing.

2、Leather softness testerThe testing steps and methods are as follows:

2.1Steps for zeroing an electronic watch using a metal circular plate calibration:

2.1.1Gently press down on the pressure handle and then release the upper arm release button outward to loosen the upper arm, causing it to bounce up.

2.1.2Place the metal circular plate on the test seat, press down on the pressure handle until the upper arm is locked, and only release it when you hear a sound. At this point, the electronic watch pointer indicates the "0" position. If there is a deviation, the electronic watch can be reset to zero key, and the scale can be reset to "0".

2.2Leather softness testerCorrection steps:

2.2.1Using the method described in section 2.1.1, lift up the upper arm and remove the metal circular plate. Place the calibration leather (a random accessory) into the test seat (which uses a 25mm metal ring).

2.2.2First, fold and press the handle to retract the probe * upwards, then press it downwards until the leather is clamped by the holder and the upper arm is locked. Only release it when you hear a sound. At this time, the electronic watch will read the softness index of the leather and record the value.

2.2.3Please refer to the attached inspection report for the calibration data. The allowable error for the test values is ± 0.1mm.

2.3Leather softness testerStart testing:

2.3.1After using the method described in section 2.1.1, lift up the upper arm and remove the calibration leather. Choose the appropriate metal ring according to the material and place it on the test seat (see note). Place the test leather on the test seat, first fold the pressure handle to retract the probe * upwards, and then press it downwards until the leather is clamped by the clamp and the upper arm is locked. At the same time, when a sound is heard, release the hand. At this time, the dial pointer will indicate the softness value of the leather and record it.

2.3.2Release the upper arm using the method described in section 2.1.1 and remove the sample.

3.Result judgment: Take the average of three different points on the test sample, mm。

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