Overview The signal current of general instruments is 4-20mA, which means that the minimum current is 4mA and the maximum current is 20mA. When transmitting a signal, consider that there is resistance on the wire. If voltage transmission is used, a

:2008-12-13 (revised draft) Fund Project: (Yunnan Province Transportation Pipeline. For the visual adaptation process from light to dark or from dark to bright, it is difficult for the driver to identify the target or object on the road surface and thus produce vision Psychological barriers

When I get to the gas station, I always say dashingly: Fill up Have you ever wondered how does the fuel gun know that the fuel is full? The fuel gun is only placed in the fuel tank mouth, not deep enough, how do you know that it is full? Many f

Today, I will introduce a national invention authorized patent-a smart gas meter with automatic identification function module. The patent was applied for by Chengdu Qianfeng Electronic Instrument Co., Ltd. and was authorized and announced on February 27, 2018. Content descri

On the 8th, “Integration of Ecology to Create WE” Jinan Center Haier washing machine brand upgrade and 2019 sales promotion meeting will be held, Casa Di, Haier and the commander brand will be upgraded in an all-round way, with the integration of ecology to create “wa

The Google Brain team announced on July 12, 2018 that it had successfully developed a computer vision technology to identify protein crystals, with a success rate of about 94%. Protein crystallization determines the shape of cells, which has a grea

Fighting a tough battle against dust control is what the people want, the general trend, and an inevitable requirement for high-quality social and economic development. In our country's cities, especially the northern cities, the problem of atmospheric particulate pollution

Here, cloud computing has entered the second half, and giants have moved to the industry cloud market. The industrial Internet sector has just started over there. Although the recent policy support has been intensively released, and manufacturing giants have also entered the ga

There have been many major industrial information security incidents in the world in recent years. Some organizations or individuals seek to achieve political appeals or economic demands through cyber attacks on industrial facilities and industrial systems. At present, most of

Selection of range hoods, these misunderstandings Mo Zhongzhao (consumer connection) To solve the problem of kitchen fumes, a good range hood is a necessity. However, many users do not know how to buy when they are facing the range hoods of different models on the market, and even fall into the

EMC (Electro MagneTIc CompaTIbility)-Electromagnetic compatibility refers to the ability of electronic and electrical equipment or systems to work normally according to design requirements in the expected electromagnetic environment. It is also an important technical performanc

Balun (English as balun) is a three-port device, or a broadband RF transmission line transformer that realizes the connection between a balanced transmission line circuit and an unbalanced transmission line circuit by converting a matched input to