When it comes to multimeters, in fact, most people are no strangers, multimeters are also called three-purpose meters, multi-purpose meters, etc., which are divided into pointer multimeters and digital multimeters. It can be used to directly measure DC voltage, AC voltage resistance and DC current, etc. In addition, some multimeters can also be used to measure capacitance, inductance, semiconductors and diodes.
It can be seen that the main functions of the multimeter are DC current, voltage detection and AC AC DC current detection, resistance detection, diode on-off detection and capacitance C detection, live wire identification test detection, etc., which is a multi-purpose and multi-range detection tool.
Among them, when the DC AC voltage is detected, the jack must be inserted accurately and not loosened. In the process of operation, if the measured voltage range is not known in advance, the range switch should be turned to the highest gear, and then transmitted to the corresponding gear according to the displayed valueSecondly, if there is still a residual number in the small voltage gear when it is not measured, this is generally a normal phenomenon and does not affect the test, but if "1" is displayed when measuring the high grade, it means that the range has been exceeded, and the range switch must be turned to a higher gear. At present, the traditional multimeter, in the process of operation, the input voltage can not exceed 1000 volts, if it exceeds, it will damage the instrument circuit, and when measuring the high-voltage circuit, it must avoid touching the high-voltage circuit.
In addition to measuring current and voltage, the multimeter can also detect resistance. You need to insert the black pen into the COM hole and the remaining red punctuation point into the "V" jack, then turn the range switch above the corresponding resistance range, and then connect the two pen to the resistance under test, so that the operation is completed.
During the operation, it is necessary to pay attention to the resistance value, if the selected range is exceeded, "1" will be displayed, and the switch should be turned to a high gear. If the measured resistance value is more than 1 m, it will take a few seconds for the reading time to be more stable, especially when measuring high resistance. Secondly, when measuring the first resistance, all the power supplies in the circuit under test must be turned off, and all the capacitors have been completely dischargedFinally, do not input voltage in the resistor range.
Of course, in addition to these precautions, the precautions for the various functions corresponding to the multimeter are also different, and if you want to ensure that the values are more stable and safer, you must follow the rules of operation. In addition, choosing a handy multimeter can make the operation process smoother.
As a well-known provider of test and measurement products and comprehensive solutions in China, UNI-T has been deeply engaged in the industry for 35 years, providing customers with efficient application of powerful measurement and test instruments, as well as practical industry solutions. Although imported instruments and equipment still occupy a certain share in the market, with the continuous development of science and technology, as well as the country's strong support and encouragement for independent innovation of enterprises, domestic instruments are gradually emerging. Unilead's UT15B MAX, UT17B MAX AND UT18B Max are three true rms digital multimeters, which significantly demonstrate their advantages in domestic substitution with their excellent performance and diversified functions.
Compared with other similar products, Uni-T's latest masterpiece has been upgraded with a full-gear 1000 volt anti-burning, so you don't have to worry about burning out the multimeter circuit due to high current during the measurement process. The most important thing to pay attention to in circuit work is safety, so when choosing a multimeter, the most important thing to pay attention to is its operational safety. In order to solve this pain point, Unilead has upgraded the current block misoperation alarm in the latest masterpiece, and if the misoperation occurs, the alarm sound will be sounded, which greatly improves the safety of the operation. Those who have used a multimeter know that the multimeter needs to have a specific switch when it is turned on, and the waiting time is not short, and the latest masterpiece of Unilead is equipped with a more one-button wake-up to shorten the boot time and improve the operation efficiency. At the same time, in order to be able to adapt to more inspection scenarios, two sets of gold-plated watch pens are equipped.
With 35 years of experience in the industry, Uni-T products have fully demonstrated the significant advantages of its products in domestic substitution, and have been trusted by many engineers.