Principle of use of static ring alarm
The wrist strap alarm is to continuously and real-time monitor whether the anti-static effect of the staff is at work. The purpose is to completely eliminate the static electricity on the staff. The anti-static of the staff is mainly affected by their own body resistance and the working environment (anti-static). Anti-static floor, anti-static work shoes, work clothes, table mats, chairs, etc.) electrostatic protection measures, the wrist strap alarm can be adjusted to completely eliminate the static electricity on the body, and at the same time detect whether it is complete, if there is an abnormality, immediately alarm.
The minimum measured resistance of the wrist strap alarm is 800K±10% ohm. The method to detect the wrist strap alarm is: adjust the fine-tuning of the online monitor to the right end, connect the ground wire and power supply (provided product: alarm host power supply), the red light flashes, and the alarm sound is accompanied by an adjustable resistance measurement Connect one end of the indicator to the ground wire, and the other end to the wrist strap jack, and then slowly slide the adjuster so that the red light turns to green, and the alarm sound disappears. At this time, the resistance value obtained is the minimum value of the online monitor Range.
The maximum measured resistance of the wrist strap alarm is 2M. Do not insert the wrist strap, directly connect the ground wire, adjust the fine adjustment to the left, and ignore it when the air shows the green light, because the body resistance of the human body is about 1M, the impedance of the wrist strap is 1M±5%, and other static electricity The impedance brought by the measures will not be greater than 1M. Under normal working conditions, the staff wears a wrist strap to adjust the fine adjustment. When the adjustment fine adjustment changes from the red light to the green light, the adjustment is completed. If there is a problem with this instrument, the fine adjustment will be out of control during the fine adjustment and will not work normally.