How to use the test pen and matters needing attention
Master the two-grip test technique and a commonly used low-voltage test pen. The palm makes contact with the metal clip of a test pen. Pinch the pencil holder's centre with your thumb, index finger, and middle finger. The index finger presses the metal cover on the tail of the rotary chisel test pen. Pinch the plastic rod's centre with your thumb, middle finger, and ring finger. You can look inward through the lighted little window with neon tubes.
Precautions for the use of the induction test
1.Verify that the test pen contains a safety resistor before using it, and then visually inspect it to see if it is damaged or wet. The test pen can only be used after passing the examination.
The test pen contains both a light-emitting body, a neon tube, and a resistance. The neon tube contains the key. A voltage is created at one end of the neon tube once the resistance is decreased, creating a high potential. You become the ground wire once your hand touches the metal end of the electric pen. The neon tube contains two thin metal wires that are quite close to one another but are not linked. Since neon gas is already present inside the neon tube, a suitable potential difference can cause a glow discharge to occur. The neon tube will suddenly fail if the voltage is too high.The neon tube will serve as insurance at this time and won't hurt you too badly. Because the conventional electric pen, the neon tube electric pen, only functions at voltages above 100V, low voltage will be more harmful. If you are irresponsible and accidentally let water into the electric pen, it will light up and you will experience an electric shock.
2. Avoid touching the metal probe at the front of the electric test pen with your hands while using the device. The result will be an incident involving electric shock.
3. When using the test pen, make careful to touch the metal portion of the end with your hand; otherwise, the neon bubble inside the test pen won't emit light, leading to incorrect judgment since the charged body, the test pen, the human body, and the earth do not create a circuit. It is extremely risky for a charged body to not be charged.
4. Find a known power source to verify whether the electric pen's neon bulb can emit light normally and whether it can be used normally before determining whether the electrical equipment is electrified.
5. Pay close attention to whether the neon bulb actually glows (or not) when evaluating a charged body in strong light, and if required, use another hand to block the light to make a careful assessment. Avoid making a mistake; determine that the neon bulb is not producing light and that there is no electricity.
