The role of clamp ammeter
The clamp meter is an instrument that combines a current transformer and an ammeter. It is an important branch of the digital multimeter. Its working principle is the same as that of the current transformer for measuring current. The clamp meter is composed of a current transformer and an ammeter. The iron core of the current transformer can be opened when the wrench is squeezed; the wire through which the measured current passes can pass through the gap opened by the iron core without cutting it, and the iron core closes when the wrench is released. The wire of the circuit under test that passes through the iron core becomes the primary coil of the current transformer, and the current passing through it induces current in the secondary coil. As a result, the ammeter connected to the secondary coil has an indication---the current of the measured circuit is measured.
The clamp meter can be changed to different ranges by switching the conversion switch. However, it is not allowed to operate with power on when switching. The accuracy of the clamp meter is generally not high, usually 2.5 to 5 levels. For ease of use, there are also conversion switches with different ranges in the meter to measure different levels of current and voltage.
The clamp meter was originally used to measure AC current, but now it has all the functions of a multimeter, and can measure AC and DC voltage, current, capacitance, diodes, transistors, resistance, temperature, frequency, etc.
The clamp ammeter can measure the photovoltaic DC current and the inverter output AC current. It should be noted that some clamp ammeters do not have DC function, the jaws must be closed tightly, and the range cannot be changed under power.
So the question is, what brand of clamp ammeter is better to use? The following are the top ten brands of clamp ammeter recommended by the editor, I hope it will be helpful to you.
What brand of clamp ammeter is good?
1. Capability
Guangzhou Zhengneng Electronic Technology Co., Ltd. is a high-tech enterprise integrating R&D, production and sales. The company is committed to the R&D and production of online monitoring equipment, portable electrical measuring instruments, etc. Based on the principles of technological innovation and people-oriented, it has been recognized by customers for many years. The company has strong technical strength and provides a large number of high-quality products and perfect after-sales services to the national power industry through extensive cooperation with major universities and scientific research institutes in Guangzhou.
The company's main products include power quality monitors, field calibrators, phase volt-ampere meters, relay protection testers, clamp-on power meters, ground resistance testers, ground fault testers, insulation resistance testers, high and low voltage clamp-on ammeters, high voltage ratio testers, loop resistance testers, leakage protection testers and other products.
The products are easy to use, stable in performance, safe and reliable, and have high precision. They have been recognized and recommended by the State Grid, China Southern Power Grid, China Electric Power Research Institute, China Meteorological Administration, etc. for many years. The products have been widely used in power, coal mining, petroleum, chemical industry, metallurgy, construction, railways, communications, national defense and other departments.
The company has a first-class technical team and a strict quality control system, and adheres to the entrepreneurial spirit of technological innovation, excellence, mutual benefit and win-win to seek greater development.
2. Fluke
Fluke Electronics is a world-leading manufacturer, distributor and servicer of electronic test tools.
Fluke Electronic Instruments was founded in 1948 and is a wholly owned subsidiary of Danaher Corporation. Fluke is a multinational company headquartered in Everett, Washington, USA, with factories in the United States, the United Kingdom, the Netherlands and China, and sales and service branches in Europe, North America, South America, Asia and Australia. Currently, Fluke's authorized distributors are located in more than 100 countries around the world, with about 2,400 employees.
3、VICTOR
Shenzhen Shengligao Electronic Technology Co., Ltd. is a technology enterprise specializing in the research and development, production and operation of "VICTOR" brand digital instruments and meters. Since the advent of "VICTOR" brand products in the 1980s, after many years of development, they have been recognized and loved by the majority of users, quickly occupied the market, and grew into a trustworthy brand, becoming a shining star in the electronic instrumentation industry.
In the process of entrepreneurship for many years, Shengli Gao Company has always aimed at the general direction of market demand, continuously introduced, absorbed, developed, innovated, and developed and produced electronic power testers, process instrument calibrators, various application instruments, power supplies, oscilloscopes, intelligent bridges, frequency meters, function signal generators and other electronic instruments and meters. A series of scientific and technological products mainly composed of three series of DMDTVC have been formed. Among them, the VC10 series process instrument calibrator products are the pinnacle of Shengli Gao Company's successful experience in handheld instruments for many years combined with modern advanced technology. She broke the situation that high-end products in the field of on-site calibration instruments were monopolized by "foreign goods" and filled the gap in China's instrument industry. Made outstanding contributions. Shengli Gao Company, product research and development is at the forefront of the industry, and product quality awareness is even ahead of its peers. While the "VICTOR" brand has won praise from the majority of users, the company has won the "Metrology Assurance Secondary Enterprise" of the Shenzhen Municipal Bureau of Technical Supervision and its products have been recommended as "Quality Trustworthy Products".
4. Xinling
Xinling Electric Co., Ltd. is located in Liushi, Zhejiang, the "China's Low Voltage Electrical Equipment Capital". It is a non-regional joint-stock enterprise integrating scientific research, development, production and sales.
The company mainly produces relays, instruments, motor protectors, circuit breakers, soft starters and other products, and has now expanded to Xinling Real Estate Development Company, Xinshun Shipbuilding Group Company and other diversified developments. The company's industrial park covers an area of 63,500 square meters and a construction area of 72,800 square meters. It has a number of joint ventures and holding companies. Its brands such as "Xinling", "Xinda" and "GKG" are highly favored in the industry. Among them, the "Xinling" trademark has been judicially recognized as a "well-known trademark in China", and its relay products have been rated as "national inspection-free products". The company's quality system has been in line with international standards. It was the first in the industry to pass the ISO9001:2000 international quality management system and the Dutch RVA certification, and its products have obtained CE, 3C, UL, TUV and other international certifications.
5. Huayi
Dongguan Huayi Instrument Technology Co., Ltd. was established in 1987. It is the world's largest instrumentation manufacturer and one of the main suppliers of electronic measuring tools in the world. It is a famous brand in China's testing instrumentation industry, a high-tech enterprise recognized by the Chinese state and a famous brand product in Guangdong Province. It is the main drafting unit of the national standards for the electrical instrumentation industry. Technological innovation is the driving force behind the development of MASTECH. MASTECH Engineering Technology R&D Center is a well-known design agency in the industry. The company has brought together a large number of high-quality R&D talents, first-class precision testing equipment, and with the professional design concepts accumulated over many years, it strives to design novel, high-quality, safe, durable, accurate and cost-effective technology products for global customers to meet the various needs of customers. At the same time, the outstanding ability of technological innovation has the ability to provide global customers with better ODM product design services.
6、HIOKI
Since its establishment in 1935, HIOKI has continuously grown and developed, and has now established an important international position in the field of advanced test and measurement process technology research and development and manufacturing. It was listed on the first section of the Tokyo Stock Exchange in December 2003. It is mainly engaged in the research and development, manufacturing, sales, calibration, and after-sales service of electrical measuring instruments. In recent years, it has further realized the integration of technology, manufacturing, and sales, and has developed new fields such as light, communication, and environmental measurement. HIOKI's goal is to promote social development while protecting the natural environment and become a trustworthy company.
HIOKI has gone through several eras since its founding. From the initial era of mass production of electrical indicating measuring instruments and circuit meters, to the era of modernization of management and promotion of research and development, it has now entered the third stage, an era of consolidating new foundations.
7. Uni-Tec Group
Uni-Tec Group Limited is one of the largest instrumentation companies in Asia and the largest brand in China's test instrumentation market. The Group develops and manufactures the most innovative, reliable, high-quality, safe and easy-to-use technology products in China, and sells products and provides related services to the global market.
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