In winter, the electrostaticphysical instrumentAnd equipment damage can not be ignored. Why?physical instrumentHow much money has been invested in anti-static measures? Afraid of being injured by static electricity! So how to avoid static electricity on the labphysical instrumentWhat about the damage?
1. How to generate static electricity?
Friction: Any two objects that touch different materials and then separate them by friction to generate static electricity;
Induction: For conductive materials, since electrons can flow freely on the surface of the conductive material, if they are placed in an electric field, the charges have the same properties. Repel, attract the opposite sex, transfer positive and negative charge, produce static electricity;
Conductive: Also used for conductive materials, because electrons can flow freely on its surface. If the electrons come into contact with a charged object, charge transfer will occur, resulting in static electricity.
2-Whyphysical instrumentEasily electrostatic breakdown?
physical instrumentProducts are usually required to meet the electromagnetic compatibility requirements of IEC61326-1 standards, including electrostatic immunity testing. According to the IEC61000-4-2, physical instrument products are required to meet the requirements of contact discharge 4KV and air discharge 8KV. Test level. 1. The higher the frequency of the physical instrument, the weaker the electrostatic protection ability, sophysical instrumentThe higher the frequency, the more attention to electrostatic protection. 2. Incorrect use and operation can also cause physical equipment to be damaged by static electricity.
3. What can we do to prevent static electricity? Althoughphysical instrumentIt has a certain antistatic ability, but if the environmental static electricity is higher than the standard requirements, the static electricity may still damage the instrument, so it is necessary to understand some basic electrostatic protection measures when using physical instruments. 1. Keep the instrument well grounded. 2. The environment is treated with static electricity before measurement. 3. Before connecting the signal, make sure that the instrument is grounded. 4. Try not to touch the exposed interface and wear anti-static suit.
So usephysical instrumentThe operator must pay attention to the protection of electrostatic suit, especially in the dry winter, to minimize the impact of electrostatic discharge onphysical instrumentof damage. And again: especially in the north, especially in winter.