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SOE signal: sequence of events (resolution not greater than 2ms), record the time of occurrence of events ( switch or protection action) one by one in order, this is the sequence of events record. COS signal (non-SOE): remote signal displacement (without time stamp). The SOE signal is sent with a ti...
Nitrogen, with the chemical formula N₂, is usually a colorless and odorless gas, accounting for about 78% of the volume of air (about 21% of oxygen). Only about 0.02 volume of nitrogen is dissolved in 1 volume of water. High-purity gases play an important role in modern industry. High-purity nitroge...
Part.1 Given the capacity of the three-phase motor, find its rated current Formula: Divide the capacity by the number of kilovolts and multiply the quotient by the coefficient of seventy-six. Three-phase 220 kW motor , 3.5 amps. Commonly used 380 motors, one kilowatt and two amps. Low voltage 660 kW...
Before entering work in closed space pipelines and other places, the measurement of oxygen concentration is a necessary detection step to ensure the safety of personnel. Therefore, industrial pipeline oxygen content detectors are often used, because oxygen is necessary for our human body. If the oxy...
Heat flux, also known as heat flow density, refers to the heat energy passing through unit area per unit time. It is a directional vector. The unit in the International System of Units is W/ ㎡, that is, watts per square meter. Heat flux, sometimes called heat flux density or heat flow density, is th...
(1) Understand the variable frequency load type . The correct selection of the inverter is very critical for the normal operation of the control system. When selecting an inverter, you must fully understand the characteristics of the load driven by the inverter. In practice, people often divide prod...
With the development of IoT and 5G technology, the era of intelligent sensing and interconnection has arrived. Smart sensors are the front-end equipment of smart sensing and are the only way for China's industry to "grow from large to strong". Smart sensors refer to sensors that combine sensors with...
The high sealing of modern residences makes life more comfortable, private and energy-saving, but carbon dioxide and water vapor produced by human breathing; formaldehyde and MOM produced by building materials, furniture, curtains, etc.; dust produced by clothes and bedding; human body, The odors ge...