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Optical fiber communication technology has developed rapidly in the last 20 years. Since optical fiber communication transmits a large amount of information at a fast speed, and it can transmits digital signals, which makes it possible to transmit information such as broadband image signals and computer networking. Thus, optical fiber measurement has entered into a new period of digitization.

Ultrasonic distance sensors are designed to measure the distance to a remote object through the air without physically touching it. Distance sensors determine this value by emitting high-frequency or ultrasonic soundwaves toward the object being measured, receiving the reflected wave, and calculating the time between emission and reception. While this broad selection makes it possible for customers to find a ultrasonic distance sensor that suits their unique application, it can also make it more difficult to determine which one is right. When we choose ultrasonic distance sensors, we should consider several problems. Here is a brief introduction about what they are.

At present, with the continuous improvement of people's living, various industries pay more and more attention to the temperature and humidity management environment of product production, equipment and warehouse storage. Therefore, it is necessary to use the temperature data loggers. The temperature and humidity data logger measures the temperature and humidity parameters and stores them in the recorder according to predetermined time intervals or uploads them to the computer cloud platform through Bluetooth or USB. The data logger can be exported and analyzed to ensure that whether there are any incidents that endanger the safety of the product during the storage and shipping. However, which industries need temperature and humidity monitoring systems?

The realization of the overload protection function of the miniature circuit breaker is based on the principle that bimetals bend in a regular direction as the temperature rises. After the miniature circuit breaker is closed, it is in normal working condition. The inner bimetal is heated by a certain current passing through it. The two pieces of metal have different thermal expansion coefficients and cause bending.

A hydraulic motor is a mechanical actuator that converts hydraulic pressure and flows into torque and angular displacement (rotation). Hydraulic motors serve the electric power, construction, water conservancy, transportation, ships, automobiles, aerospace and military field. Hydraulic systems are widely used in papermaking, textile, plastics, rubber and other light industries. It also plays an important role in heavy industry, like mining, petroleum, metallurgy and pressure processing.

Variable Frequency Drive universal frequency converter is a power control device that controls the AC motor by changing the frequency of the working power supply of the motor, and converts the power frequency AC power with constant voltage and frequency into voltage or frequency by applying the principle of frequency conversion technology and microelectronic technology The working process of the variable AC power device is to first convert the power frequency AC power supply into a DC power supply through a rectifier, and then convert the DC power supply into an AC power supply with controllable frequency and voltage to supply the motor.

The full name of OTDR is Optical Time Domain Reflectometer. An optical time-domain reflectometer (OTDR) is an optoelectronic instrument used to characterize an optical fiber. It is the optical equivalent of an electronic time domain reflectometer. OTDR is widely used in the maintenance and construction of optical cable lines, and can measure optical fiber length, optical fiber transmission attenuation, joint attenuation and fault location.

Gas detectors are usually used to detect toxic, harmful or flammable gases. Toxic gas detectors are generally used in biochemical, pharmaceutical, construction and other industries, while combustible gas detectors are often used in coal mines, petroleum, chemical, fuel and other industries. With the rapid development of the industry, the monitoring of gas in the environment is essential, so how should we choose a gas detector? At present, there are portable gas detectors and fixed gas detectors provided by manufacturers and supplies. These two types of gas detectors are divided into 1 in 1, 2 in 1, 4 in 1 and other specifications, and these products with different specifications have different application functions for gases. The detection standards for different industries and occasions are different, and the detection standards for different gases are also different.

Electric chain hoist is a hoisting and transporting machine that is used to lift or lower heavy loads and can move in the horizontal direction. It has the characteristics of small lifting weight, simple result and convenient operation, and is widely used in the installation, lifting and maintenance of small equipment in industrial and mining enterprises. Generally, electrical power chain hoists have only one constant running speed.

A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. The main components are the primary coil, the secondary coil and the iron core (magnetic core). The main functions are: voltage transformation, impedance transformation, isolation, etc. According to different uses, transformers can be divided into several categories. Today we mainly introduce the applications and advantages of isolation transformers, toroidal Transformers, control transformers, and autotransformers, so that you can make better choices when purchasing.

The spindle motor is also called a high-speed motor, which refers to an AC motor with a rotational speed of more than 10,000 rpm/min. Mainly used in wood, aluminum, stone, hardware, glass, PVC and other industries, it has the advantages of fast speed, small size, light weight, low material consumption, low noise, low vibration, etc. It has attracted more and more attention in related industries. In the modern society with rapid technological progress, the spindle motor has been widely applied, and it couples with its meticulous workmanship, high speed and high processing quality of the motor. Besides, other ordinary motors cannot meet the technical requirements of the spindle motor or play a role as the spindle motor doe in the industrial production process.

A relay is an electrical control device, which is an electrical appliance that makes a predetermined step change of the controlled quantity in the electrical output circuit when the change of the input quantity meets the specified requirements. It has the interactive relationship between the control system and the controlled system. Usually used in automatic control circuits, it is actually an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit.

An encoder is a device that compiles and converts a signal (such as bit-stream) or data into a signal form that can be used for communication, transmission and storage. The encoder converts angular displacement or linear displacement into electrical signals. The former is called a code wheel, and the latter is called a code ruler.

Connector is an indispensable electronic component in human life. For ordinary people, connector is relatively unfamiliar, but for technicians like electronic engineering, connector is something they often come into contact with. Although the role of the connector is relatively simple, the role it plays in human life is irreplaceable! So today we will introduce what is a connector, and two types of connectors, so that you can make the best choice when purchasing.

Gearbox is an important part widely used in the rotation of the system. It consists of two or more gears, including at least one drive gear with a certain diameter, and one smaller gear connected to the drive mechanism (electric motor, wind turbine, diesel generator, and so on).

An induction motor or an asynchronous motor is an AC motor that works on the principle of electromagnetic induction. That is, the rotor obtains torque under the action of the rotating magnetic field generated by the stator, and then the rotor rotates. Since the rotor speed is not the same as the speed of the rotating magnetic field (synchronous speed), the induction motor is also known as asynchronous motor. Induction motors are popular in the industry, since they are simple to build and economical. The following are some essential things you need to consider when buying an induction motor.

Water chiller is a machine that removes heat from a liquid coolant via a vapor-compression, adsorption refrigeration, or absorption refrigeration cycles. Air cooled water chiller and water cooled water chiller are eh two types of the water chiller. How to choose the right chiller is a problem worth our attention. Because water chillers for sale in various websites. In the following, we will tell some tips to help you choose a suitable, high quality and cheap water chiller.

Hybrid stepper motor is a stepper motor designed by combining the advantages of permanent magnet and reactive. It is divided into 2 phase, 3 phase and 5 phase. The two phase stepping angle is generally 1.8 degrees, the three phase stepping angle is generally 1.2 degrees, and the five phase stepping angle is generally 0.72 degrees.

Digital timer relay has the advantages of accurate measurement, simple setting, multiple protection functions and high speed, etc. It is an ideal substitute for traditional electromagnetic and static relays. Digital time relay is generally used in automation equipment electrical cabinet, street lamp control, water pump timing operation control, equipment timing start and stop control and other occasions. In this article, we will experiment to see how it is set up and works.

Stepper motor is one of many motors. Although it is the same as other motors in terms of functional types, it is different from other types of motors in terms of working principle and structural design. The operation form, functional performance, applicable aspects and performance of different stepping motors are different from other types of motors.