The function and technical index of static tester commonly used in anti-static industry
The function and technical index of static tester commonly used in anti-static industry
(1) Static electricity tester: a measure the amount of static electricity in the product or a certain location. b measure the static elimination performance of the static eliminator
(2) Wrist strap tester: Measure whether the wrist strap is effective (ie conductive effect).
(3) Wrist strap online monitor: monitor whether the wrist strap is damaged and worn well at any time.
(4) Human body comprehensive tester: It can be used to measure whether the wrist strap and anti-static shoes are effective, and it can also measure the comprehensive resistance of the human body.
(5) Surface resistance tester: used to measure the surface impedance or resistance of all conductive, antistatic and electrostatic discharge products.
(6) System monitoring alarm: It can monitor whether the work flow ground line is in good contact with the earth at any time.
Technical index requirements for anti-static in electronic product manufacturing
(1) The grounding resistance of the anti-static ground electrode is less than 10Ω.
(2) Anti-static floor or floor mat: The surface resistance value is 105-109Ω, and the friction voltage is less than 100V.
(3) Anti-static wall: resistance value 5×104-109Ω.
(4) Anti-static table mat (also called anti-static table mat:) The surface resistance value is 105-109Ω; the friction voltage is less than 100V; the ground system resistance is 105-109Ω.
(5) Anti-static chair: 105-109Ω facing the caster resistance.
(6) Anti-static clothing, hats, gloves: friction voltage <300V; shoe sole friction voltage <100V. The surface resistance is 105-109Ω.
(7) Anti-static wrist strap: the resistance of the connecting cable is 1MΩ; the system resistance when wearing the wrist strap is 750KΩ-10.5MΩ. The resistance of the heel strap (shoe harness) system is 105-108Ω.
(8) The resistance of the logistics vehicle platform facing the wheel system is 105-109Ω.
(9) Material box, turnover box, PCB turnover rack: The surface resistance value of the logistics transmission equipment is 103-109Ω, and the friction voltage is less than 100V.
(10) The friction voltage of anti-static shielding bags and boxes is less than 100V.
(11) The overall resistance of the human body is 105-109Ω.
Formulate an anti-static management system, and have a dedicated person responsible. Regularly check and maintain the effectiveness of anti-static facilities.
(1) Anti-static wrist strap: check once a day.
(2) Anti-static overalls: check once a month.
(3) Anti-static shoes: check once a week.
(4) Human body comprehensive resistance: check once a day.
(5) The anti-static performance of anti-static component racks, printed board racks, turnover boxes, and transport vehicles shall be inspected every six months.
(6) Anti-static floor:, table mats, floor mats are inspected every three months.
(7) Static elimination equipment: inspected every three months.
(8) The grounding of anti-static products is checked once a month.