Several Measuring Methods of Digital Display Electric Measuring Pen
The test pen is marked with 12-240vAC.DC, which means that the test pen can measure AC or DC voltage within the range of 12-240v. The two buttons on the test pen are made of metal materials. When measuring, the hand should hold down the button. To form a current loop, usually the direct measurement button is far away from the display screen, and the induction measurement is close to the display screen.
How to use the digital display test pen
1. Direct measurement method
The direct measurement method refers to the measurement method that directly touches the probe of the test pen to the measured object to determine whether it is charged. When using the direct measurement method, touch the metal probe of the test pen to the object under test, and hold down the direct measurement button (DIRECT) at the same time. If the test object is charged, the indicator light on the test pen will light up and the display will display Measure the value of the voltage. General test pen can display 12v, 36v, 55v, 110v and 220v. Generally, the last displayed value on the display is the measured voltage value.
2. Induction measurement method
The induction measurement method refers to the measurement method in which the probe of the test pen is close to but not in contact with the measured object, and the voltage induction is used to determine whether the measured object is charged.
Inductive measurement
If the wire is electrified, the display of the test pen will display the symbol of the voltage. If the indicator light of the disconnection in the middle of the wire is off, the symbol of the voltage will disappear, indicating that there is a disconnection at the current position. The inductive measurement method can find out the broken wire position of the insulated wire, and can also judge the live wire and the neutral wire of the insulated wire.
Electricity provides convenience to our life, but it is also dangerous. Therefore, it is recommended to leave it to professionals to deal with electricity issues, and we must not be brave
