A, the use of multi-function instrument matters needing attention
1. Before use, the instrument needs to be powered on 15 minutes.
2, pay attention to prevent vibration and impact, do not use in places where dust and harmful gases exceed the standard.
3. The input line cannot be too long. If the input end of the measured signal is long, please try twisted pair shielded wire.
4. If the signal is accompanied by high-frequency interference, try the low-frequency filter online.
5. When not used for a long time, please power on for at least 4 hours every three months.
6, long-term storage should avoid direct light, should be stored at ambient temperature-25 C ~ 55 C. 。
7. If it is not displayed on the instrument, check whether the auxiliary power supply and voltage are within the range.
8. If the display is abnormal, check whether the input signal is normal and whether the signal terminal is tightened.
9. Unless the PT has enough power, the PT signal cannot be used as an auxiliary power supply at the same time to ensure the normal operation of the instrument.
10, the current terminal screw in the CT loop must be tightened to ensure reliable contact between incoming and outgoing lines to avoid failure.
1 1. If the instrument is to be calibrated, the calibration instrument should be better than 0. 1 to ensure the calibration accuracy.
Second, the multifunctional dining table manufacturer recommended
1, Zhejiang Zhuoshuo Electric Technology Co., Ltd. is a high-tech enterprise specializing in the research, development, production, sales and service of power monitoring system, energy consumption management system, power multifunctional instrument and guideway watt-hour meter. "Always accurate, always meticulous." It is the unchangeable belief of Zhejiang Zhuoshuo Electric Technology Co., Ltd.
Zhejiang Zhuoshuo Electric Technology Co., Ltd. pays attention to the cooperation with major universities in China, and forms a Industry-University-Research consortium with some university single-chip computer centers, and has developed system software and communication? Protocol security and reliability operation test specification. We will turn the advanced technology of colleges and universities into productive forces, and with the help of young product development team and advanced test equipment, we will carefully develop a series of products such as multi-function ammeter, intelligent lighting control module and guide rail watt-hour meter. At the same time, we have a deep understanding of the characteristics of metallurgy, petrochemical, electric power, medical care, rail transit, municipal administration, environmental protection, national defense, water conservancy and other industries, and maintain good communication with major design institutes, constantly refine product classification and optimize product performance to truly meet the needs of different industries.
2、? Zhuzhou Sanda Electronic Manufacturing Co., Ltd. (formerly Liling Electronic Technology Research Institute), located in Liling, a famous manufacturing city with developed industry and outstanding people, is a modern high-tech enterprise dedicated to R&D, production and sales of intelligent series products of power system.
The main electrical products developed and produced are: multifunctional ammeter, intelligent control device of switchgear, switch status display, overvoltage protector, condensation controller, intelligent temperature and humidity controller, dry-type transformer thermostat, transformer cooling fan, online temperature monitoring device, motor protection controller, power transmitter, 0.5 kV ~ 0.66 kV low-voltage current transformer, etc.
3. Jiangsu Boyihui Intelligent Technology Co., Ltd. focuses on research and development, technical consultation, technical service and technology transfer of intelligent control systems; Sales, installation and maintenance of electrical equipment, electronic components, instruments and meters, distribution switch control equipment and security equipment; Mechanical equipment leasing; Sales of daily necessities, office supplies, communication equipment and equipment (excluding radio transmitting equipment), decoration materials, metal materials, packaging materials, rubber products and plastic products; Development of new energy technology; Landscaping engineering construction; Flower seedling sales and so on.
What we gave you as an example above is all kinds of information about multi-function meters, which is what we usually call multi-function power meters. They are instruments that can measure parameters such as current, electric power or voltage with high precision, and they are relatively small in size, convenient to install, small in engineering quantity and simple to use and operate, especially suitable for carrying around when going out to work. Multi-functional instruments on the market can be classified in detail according to different readings or different structures, and we should check them before buying. Choose according to your own needs and budget.