The importance of static detection
Electrostatic testing data is a valuable and important parameter for studying static electricity and preventing electrostatic hazards. In order to grasp the law of static electricity, understand the situation of static electricity in the electronic manufacturing industry, judge the danger caused by static electricity in the production process, and inspect static electricity The effectiveness of the arrangement measures must be measured by precision instruments. Although some electrostatic parameters seem to be understandable in theory, because the actual conditions are more complicated, it is often difficult to obtain satisfactory results based on empirical calculations and must be relied on In addition to directly considering the safety issues in production, the measurement of static electricity detection instruments requires on-site inspection. In the research work on static electricity and the production process using static electricity, it is also necessary to measure the effective data of static electricity.
Electrostatic detection mainly includes several aspects, the detection of electrostatic parameters and the measurement of the electrical characteristic parameters of related materials and articles of the product. The measurement of electrostatic indicators includes: electrostatic voltage, electric field strength, charge amount, weak current, flame discharge energy, electrostatic discharge current Waveform, electrostatic discharge radiation electromagnetic field and other parameters that represent charging characteristics. The electrical characteristics of materials or objects include resistance or resistivity, dielectric constant, capacitance and other characteristic parameters. Under certain specific conditions, for the purpose of safety, it is also necessary to measure process parameters and environmental conditions such as dynamic rotation speed, pressure, mixture concentration, temperature and humidity in the flow bandwidth.
In fact, in the process of static protection, there is a problem that everyone is using anti-static consumables, static elimination equipment, and static grounding systems without a complete management system. It is often found that some customers use static protection equipment in all processes on the surface. It seems that it is very in place, but in fact it has failed to achieve good results. It is necessary to constantly find problems in electrostatic protection, check some electrostatic consumables from time to time or regularly, update and replace non-compliant or invalid electrostatic products, and eliminate static electricity. The equipment must be tested regularly and at fixed points. Conditions permitting can effectively and intelligently monitor the equipment, and remove the equipment that cannot neutralize static electricity.
Personnel management implements a multi-pronged approach. While protecting the human body, it is necessary to cultivate the awareness of electrostatic protection of employees, conduct static electricity knowledge from time to time, and make static warning signs, ESD protection signs, and ESD grounding points at obvious entrances and exits. Logo, EPA post ESD control level logo, always remind workers to do electrostatic protection work.
The containers, tools, and operating equipment used by workers in the production and operation process must be prepared for the changes in the data during the electrostatic detection process, and keep abreast of the details at any time. If necessary, compare different stages to ensure the meaning of the measurement parameters.
There are many cases where measurement may be problematic, for example: How high is the human walking voltage? Anti-static shoes and anti-static wrist straps need to measure parameters during use. How long does it take for ion fans to eliminate static electricity? Is the electrostatic grounding system up to standard? System resistance of anti-static chair? Is the anti-static floor well grounded? Is the human body protective grounding system OK, anti-static packaging materials, surface resistance of the workbench? .......