In life, people are now inseparable from electricity, TV, computer, refrigerator, air conditioner, washing machine, induction cooker, mobile phone, etc., these electrical appliances make our life very convenient. But at the same time, electricity is also an invisible tiger, everyone is afraid, if you are not careful, there will be a risk of electric shock, even life. Therefore, today Xiaobian teaches you how to use the electric pen correctly at home, let this gadget judge whether the object is charged, and give us early warning.
How to use:
1. Button description: (A key) DIRECT, directly measure the button (far from the LCD screen), that is, when using the blot to directly contact the line, please press this button; (B key) INDUCTANCE, the induction measurement button (closer to the LCD screen), that is, when the contact line is sensed with the blotch, please press this button. Note: No matter how the pen is printed, please identify the one that is far away from the LCD screen as a direct measurement key; Closer to the liquid crystal is the induction key!
2. This electric measuring pen is suitable for direct detection of AC and DC current of 12-250V and indirect detection of neutral line, phase line and break point of AC current. On-off of uncharged conductors can also be measured.
3. Direct detection
a. The last digit is the measured voltage value;
b. When the high break display value is not 70%, the low break value is displayed;
c. When measuring direct current, the hand should touch the other pole;
4. Indirect detection: hold down the B button, put the blot close to the power line, if the power line is charged, the display of the digital pen will display the high-voltage symbol
5. Breakpoint detection: hold down the B key, when moving vertically along the wire, there is no display in the display window that is the breakpoint;
Second, directly detect whether the wire is short-circuited
There is a button is breakpoint measurement, for a line, you can hold this end of the wire in one hand, the other hand touches the hotkey of breakpoint measurement with your finger, touch the other end of the line with the pen head, if the pen red light is on, indicating that the wire is on, not light up means that it is disconnected. Measure power if there are no breakpoints. With an electric pen, it is impossible to determine whether the wire is on or off.
Third, the voltage display: the above display: 12 24 36 110 220V. If you are on the line of fire, it will show 220, and the zero line will usually show 16 or 24V!
Fourth, after the zero line is broken, when the zero line of the power supply (front end of the breakpoint) is measured with an electric pen, the neon bubble is not bright, the digital display pen shows the symbol of electricity, and when the back end of the break point is measured with an electric pen, the neon bubble emits light normally, and the digital display pen displays 220 volts.
Fifth, the search for the short circuit of the two-core wire: plug in the power supply, use the indirect measurement of the digital display pen to find, if it is not found that the breakpoint may be on the zero line, reverse the plug to make the zero live wire adjust and retest.
Six? The electric pen will generally display 12V24V48V110V220V380V, but the actual reading should look at the maximum value of the digital display table, that is, the maximum value of the display data, such as displaying 12V, 36V, the approximate value of the measured voltage is 36V; Secondly, the voltage of the live wire, that is, the single-phase voltage, the rated value of 220V, the voltage of the neutral wire; Generally called the voltage of the neutral line, it is 0V when balanced; The ground wire, as the name suggests, is a wire directly grounded, which is 0V; The data of the last actual measurement shows that the live wire is generally between 210-230, and the neutral line is generally an unbalanced load, so it is generally within 0-24V, and the ground wire must be 0V, otherwise it will definitely be electrocuted (generally connected to the shell, also known as the protection wire).
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After reading it, I think it is helpful to everyone to repost and collect, so that more people can learn these professional knowledge, thank you very much, if there are better suggestions and opinions trouble comment area message, I will reply one by one, thank you.
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