Real-time monitoring of anti-static measures in the production workshop
From the current production workshops, many companies have continuously improved their anti-static requirements and formulated many anti-static measures. To achieve anti-static standards, companies must pass continuous inspection and monitoring to identify and quantify those that really need ESD protection. Area (EPA), where manpower and material resources are concentrated, and at the same time, which areas are electrostatically safe areas to save unnecessary expenses; to ensure the electrostatic safety of all people and turnover containers and equipment entering the EPA environment; to ensure the normal and normal ESD equipment Effective operation.
The electrostatic parameters concerned in the production process include electric field strength, electrostatic potential, charge and resistivity. The amount of electric charge is an essential physical quantity of static electricity, but on-site measurement is not convenient. It is usually used to measure the electrostatic potential on the surface of the object. The measurement often uses a non-contact electrostatic voltmeter, which does not contact the object under test, so the electrostatic effect on the object under test Very small. The anti-static performance of an object can be identified by detecting its surface resistivity or volume resistivity, and the electric field strength characterizes the energy accumulated by static electricity in the working environment, which is very important for the determination of EPA. Commonly used testing instruments include field strength meter, wrist strap and shoe tester (human body comprehensive tester), surface impedance tester, electrostatic voltage tester, charge meter, etc. The new comprehensive monitoring equipment can monitor the static electricity in the area Monitoring, if any parameter exceeds the standard, it will automatically alarm.
Detection is a necessary means of ESD control and should be carried out in real time in all links of production. Operators must test the performance of hand/ankle straps, anti-static shoes, and anti-static work clothes each time before entering the EPA; a special person must be responsible for EPA inspection and maintenance, and regularly check whether various ESD equipment, turnover containers, and grounding devices meet the requirements of anti-static equipment. The requirements of static electricity; management personnel should regularly check the anti-static grounding conditions of each work station, and if they find that they do not meet the requirements, they should make real-time rectification; the test results should be sorted and archived and checked as part of the quality management system certification.
Static electricity protection Static electricity elimination is a systematic project. It is necessary to implement the overall protection concept, comprehensively use equalizing, grounding, draining, shielding and clamping technologies to form a complete protection system in order to achieve obvious results.