It is used to test the low-pressure electroscope to ground voltage 250V and below the low-voltage electrical equipment, it is commonly used in household electrical safety tool. It mainly consists of working contacts, dropping resistor, neon bulbs, springs and other components. This electroscope electroscope it is the use of electric current through the human body, the earth form a loop, its leakage current to emit light neon bulb starter work. As long as the potential difference between the body and the earth charged more than a certain value (36V or less), the electroscope will glow, a value lower than the over, do not emit light, thereby to determine whether low-voltage electrical equipment with voltage. Before use, first check the integrity of the electrical inspection pen, the four part is missing, the neon bulb is damaged, then there is power in place to test only confirmed a posteriori electric pen intact, electrical inspection can be conducted. When in use, be sure to grip the cap screws or tail end of the metal hooks, metal probe tip contact with energized equipment, electrical inspection wet hands do not go, do not touch the metal probe tip. In addition to low-voltage electric pen test is mainly used to check the low-voltage electrical equipment and wiring, but it can also differentiate phase line and the zero line, as well as AC and DC voltage level. Usually neon bulb emitting who is FireWire, zero line is not bright person; but when the neutral point is displaced to note, at this time, the zero line will also make neon bulb light; for alternating current through the neon bulb, neon bulbs are light poles , DC by just over a shiny vicinity of the electrode; when the voltage level used to determine when the neon light bulb dark light, low voltage; neon bulb yellow red, strong brightness when voltage is high. High-pressure high-pressure electroscope electroscope is mainly used in the test equipment on the ground voltage above 250V high-voltage electrical equipment. Currently, there are emission type sound and light pressure electroscope type windmill three types of widely used. Pressure electroscope usually detected by section (indicator section or windmill), insulation parts, handshake part of three parts. Insulating portion from the indicator means lower metal screw until the cover engaging portion grommet ending handshake section refers to retaining part of the ring below the cap. Wherein the insulating part, handshake different voltage levels based in part on the length is not the same. When using high-pressure electroscope conduct electrical inspection, it must first perform the operation carefully monitoring system, one person, one person guardianship. The former operator, the guardian in the post. When using the electroscope, we must pay attention to its rated voltage and the measured voltage electrical equipment to adapt, as this may endanger the safety of operating personnel or cause misjudgment. When electrical inspection, the operator must wear insulated gloves, wear insulated boots to prevent step voltage or touch voltage on the human body injury. The operator should hand guard cover part of the ring following the handshake, the first in an electric device for inspection. When the test should be gradually moved closer to the charging device to light or sound only, in order to verify the integrity of the electroscope. Then on the need to examine the electrical equipment testing. When the same multi-pole electrical line test set up, should a priori low pressure, high pressure posteriori, a priori lower, upper posterior Contact: Qi Shuo; Tel: 18332463496; QQ: 3260520587