Things that electronics factories must pay attention to when measuring static electricity
Static electricity measurement is to use corresponding measuring devices to measure the physical parameters related to static electricity. The main static electricity parameters are: static electricity potential, mass charge density and volume charge density of the medium; discharge charge, discharge energy, discharge current of static electricity discharge sparks; resistance, capacitance, inductance; surface resistivity and volume resistivity of the medium, dielectric constant; discharge time constant, etc. The instruments and equipment used for measurement are: static electricity potentiometer, high resistance meter, capacitance bridge, inductance bridge, galvanometer, oscilloscope, static electricity decay meter, Faraday, static electricity sensitivity measuring device, etc.
Precautions for measuring static electricity:
(1) Use easy-to-use and reliable measuring instruments. In explosion-hazardous areas, explosion-proof measuring instruments should be used.
(2) Read the instrument instructions carefully before measuring to understand its measurement principle and scope of use.
(3) Adjust the sensitivity and select the range before measuring.
(4) Measure and analyze the risk of detonation caused by measurement. Measure after eliminating the risk of ignition; and consider emergency measures in advance in case of accidents.
(5) To prevent discharge during measurement, the probe of the measuring instrument should be slowly brought close to the charged object. This applies even to explosion-proof instruments.
(6) The same item should be measured several times, and the average and maximum values should be taken when reproducibility is good.