Digital display voltage tester usage, how to measure voltage of digital display electric pen?

1. Button description:

A key) direct, directly measure the button (far away from the LCD screen), that is, when you use the bit to directly contact the line, please press this button;

B key) inductance, inductive measurement button (close to the LCD screen), that is, when using the bit bit to sense the contact line, please press this button.

Note: No matter how the words are printed on the electric pen, please identify the one far away from the LCD screen as a direct measurement; The one closer to the liquid crystal is the induction key!

2. This voltage tester is suitable for direct detection of AC and DC power of 12-250V and indirect detection of neutral line, phase line and break point of AC power. It is also possible to measure the on/off of uncharged conductors.

3. Direct detection.

a.The last digit is the measured voltage value;

b.When the display value of high break is less than 70%, the low break value is displayed;

c.When measuring direct current, touch the other pole with your hand;

4. Indirect detection: press and hold the B button, put the bit close to the power line, if the power line is live, the display of the digital display pen will display the high-voltage symbol.

5. Breakpoint detection: When you hold down the B button and move longitudinally along the wire, there is no display in the display window that is the breakpoint.

1. Button description:

A key) direct, directly measure the button far away from the LCD screen}, that is, when you use the pen tip to directly contact the line, please press this button.

B key) inductance measurement button is close to the LCD screen).That is, the tip of the pen is used to sense the contact line. Time. Please press this button.

2) The digital display electric pen is suitable for direct detection 12 250

v of AC and DC and indirect detection of neutrals, phase wires and breakpoints of AC current. It is also possible to measure the on/off of uncharged conductors.

3. Direct detection.

The last digit is the measured voltage port.

When the display value of the high break is not 70%. Displays a low break value.

When measuring direct current, touch the other pole with your hand;

The digital pen has the function of measuring the opening value of the voltage number, which is normally divided into 12 36 55 110 220 gears.

If only 12 is displayed, it means that the measured voltage is about 12V, and if all these numbers are displayed, the maximum value on the far right is 220V, indicating that the measured voltage should be about 220V.

The digital display voltage tester pen body has an LCD display, which can intuitively read the test voltage number. When measuring the fire wire, there is a voltage between the lighting circuit and the ground U=220V, and the resistance of the human body is as small as a few hundred to thousands of ohms.

The resistance inside the voltage tester is usually about a few trillion ohms, and the current through the voltage tester (that is, the current through the human body) is very small, usually less than 1 milliampere, when such a small current passes through the human body, there is no harm to people, and when such a small current passes through the neon bubble of the voltage tester, the neon bubble will glow.

Speaking of voltage testers, there is a little story. At first, I didn't know much about the voltage tester, when I saw the pen clip on my friend's chest, I thought it was an ordinary fountain pen, but I didn't think it was a pen clip design SATA Shida 62603 multi-function voltage tester.

In fact, the use of the voltage tester is very simple, taking the SATA Shida 62603 multi-functional digital display voltage tester used by a friend as an example, this voltage tester is purchased by the power company where he works. The pen body is divided into a direct measurement button and an induction button, if you want to directly detect the AC and DC voltage of 12V 250V when using, gently press and hold the direct measurement button with your thumb (the one farthest from the pen tip), and at the same time the metal pen tip can touch the object, and the data displayed on the screen at this time is the voltage value.

If you want to know whether there is electricity inside the object or inside the wire with insulated skin, just touch the inductance button (the closest inductance to the tip of the pen) with your thumb, close to the detection object, if the lightning symbol is displayed, it means that the object is charged inside, otherwise it is not charged, relying on this button to clearly distinguish the neutral wire, live wire, and ground wire. However, it should be noted that when using this digital display electric tester, you cannot press and hold two buttons at the same time, otherwise the measurement results will not be accurate.

Of course, the use of voltage tester can not be ignored, that is, you must choose a high-quality brand, after all, the quality of the quality is directly related to the accuracy and safety of the measurement, if you don't know how to choose, you can refer to the power company to purchase the Star brand.

The method of use is to touch one end of the cap of the pen with your hand, and the other end touches the object to be measured, if the window of the pen is red, it means that the object to be measured is charged.

1. The voltage tester is sold in supermarkets or hardware and electrical stores, you can buy one, whether it is a digital display or a physical one, do not draw cheap, and ensure the quality is the most important.

2. When holding the pen, press the tail of the tester with your fingers, and hold the pen with the rest of your fingers.

3. If the light is not obvious in the daytime or in a place with strong light, you can use your hands to block the light and observe carefully.

4. If you want to measure the contact object measurement, gently press and hold the direct measurement button (the one farthest from the pen tip) with your thumb, and the metal pen tip touches the object to measure;

If you want to know whether there is electricity inside the object or inside the insulated wire, touch the inductance button with your thumb (the one closest to the tip of the pen), if the voltage tester shows the lightning symbol, it means that the object is charged inside; Otherwise, it is not electrified.

5. Do not hold down both buttons at the same time when using the digital voltage tester, so that the measurement results are not accurate and have no reference significance.

The function of the low-voltage electroscope: In addition to detecting whether the measured object is live, the low-voltage electroscope also has the following functions.

Before testing whether the electrical appliances and circuits are electrified, you should try it in a place where there is electricity to see if the voltage tester is in good condition to prevent electric shock due to misjudgment.

When measuring electricity, the tip of the pen touches the test body, and the hand touches the tail of the tester. If the test body is electrified, the neon tube of the voltage tester will glow; If the neon tube does not emit light, the test body is not charged.

Voltage testers with an insulation resistance of less than 1 trillion ohms cannot be used.

Ingredients: 400g of dried fragrant ingredients: appropriate amount of vegetable oil, 3g of salt, 4g of chili powder, 3g of Sichuan pepper powder, 4 teaspoons of sesame pepper red oil, 2g of sugar, 2g of dark soy sauce, 5g of white sesame seeds, 3g1 of pepper, prepare raw materials.

2. Cut the dried incense into strips. 3. Heat the pan with cold oil, and the oil is hot for 8 into fragrant dry. 4. Fry until the skin is golden and 8 mature, remove and drain the oil.

5. Leave the bottom oil at the bottom of the pot, add sugar and fry over low heat to melt. 6. Add Sichuan pepper powder, chili powder and pepper and stir-fry evenly. 7. Add the fried fragrant dried.

8. Add dark soy sauce and salt. 9. Stir-fry the pepper and red oil evenly. 10. Add white sesame seeds.

11. Wrap the seasoning around each dried incense. 12. a finished product.

Here's how to use the digital pen:

1. It can be used for low-voltage nuclear phase to measure whether any wire in the line is in phase or out of phase. The specific method is: standing on an object insulated from the earth, holding a voltage tester in each hand, and then testing on the two wires to be measured, if the two voltage testers are very bright, the two wires are out of phase;

On the contrary, it is in-phase, which is judged by the principle that the voltage difference between the two poles of the neon bubble in the voltage tester is proportional to its luminous intensity.

2. It can be used to distinguish alternating current and direct current. When testing with a voltage tester, if both poles in the neon bubble of the voltage tester emit light, it is alternating current; If only one of the two poles emits light, it is direct current.

3. The positive and negative poles of direct current can be judged. The voltage tester is connected to the DC circuit for testing, and the pole where the neon bubble shines is the negative pole, and the pole that does not shine is the positive pole.

4. It can be used to judge whether DC is grounded. In the DC system with ground insulation, you can stand on the ground and use the voltage tester to contact the positive or negative electrode in the DC system, if the neon bubble of the voltage tester is not bright, there is no grounding phenomenon.

5. If the neon bubble is shiny, it means that there is a grounding phenomenon, and if it shines like the tip of the pen, it means that the positive electrode is grounded. If it shines on the finger end, the negative electrode is grounded. However, it must be pointed out that in a DC system with a grounding monitoring relay, this method cannot be used to determine whether the DC system is grounded.

It is a new digital display tester, which can test 12v 24v 36v 110v and 220v, generally according to the test pen above the point is the voltage test, with the highest display as the test voltage value at that time; Below is the inductive test to detect the broken circuit of the insulator line, which is based on experience.