How to distinguish the upper and lower layers of the anti-static rubber mat
The anti-static rubber mat needs to distinguish between the upper and lower layers when laying, because the resistance of the upper layer must be between 1*106~1*109 ohms, and the resistance of the lower layer needs to be less than 1*106 ohms, which is made of anti-static rubber mats The role of the decision.
First of all, distinguishing by color is the easiest way to distinguish the lower layer of the anti-static rubber pad. Due to the presence of conductive carbon black in the material, the color is black, while the color of the upper layer is mainly green, blue, or gray, and it may be other Customized colors. However, the upper and lower layers are both black. Generally, there is a certain color difference, and the obviously thinner layer is the upper layer. If even the color difference cannot be recognized, then you can only judge by testing the resistance. In the absence of a megohmmeter, you can detect the resistance of the two sides at the maximum range of the multimeter. If there is a reading on one side and no reading on the other side, then The lower layer has readings, and the upper layer has no readings. If there are no readings, you can only change to a multimeter with a larger range or check whether the anti-static rubber pad is a qualified product.
In order to avoid the situation where it is difficult to distinguish the upper and lower layers, Chuangxuanbao often does not recommend customers to customize the upper and lower layers of the products in black. If black products must be used, they will also be distinguished to avoid unnecessary trouble for customers as much as possible.