Tag: working principle

A spectrophotometer is a scientific instrument that decomposes light with complex components into spectral lines. The measurement range generally includes the visible light region with wavelengths ranging from 380nm to 780 nm and the ultraviolet region with wavelengths ranging from 200nm to 380 nm. Different light sources have their own unique emission spectrum, so different luminous bodies can be used as the light source of the instrument.

Static eliminator is composed of high voltage power generator and discharge electrode (generally made of ion needle), through the tip of high voltage corona discharge ionization of air into a large number of positive and negative ions, and then the wind blows a large number of positive and negative ions to the surface of the object to neutralize static electricity, or directly put the static eliminator near the surface of the object to neutralize static electricity.

Linear servo motors, also called permanent magnet linear servo motors, generate thrust and speed based on supply current and voltage, and perform linear motion along the driven axis. A linear servo motor is an integral part of a closed-loop system, providing thrust and speed based on commands from the servo controller using a feedback device to achieve a closed-loop.

The three-piece ball valve is a relatively new type of ball valve. It has some unique advantages of its own structure, such as no friction on the switch, the seal is not easy to wear, and the opening and closing torque is small. This reduces the size of the mounted actuator. Equipped with a multi-turn electric actuator that adjusts the medium and closes tightly. ATO 3 piece ball valve sizes are available in 1", 1/2" and 3".

LED indicator light control system, X-ray collimator is an important component of X-ray machine. Two sets of adjustable screen lead plates are used to define the X-ray exposure field in X-ray emission.Lies in its features, including PC and single chip microcomputer system, camera, motor drive circuit, two dc motors, camera installed in the led indicator light out of the mouth on the shell of light, and make your camera vision, camera to PC, PC output instruction transmitted by serial port to the single-chip microcomputer system, single chip microcomputer system after processing the data, the output through the motor drive circuit to control the led indicator light, and the longitudinal and transverse two dc motor are, inversion, two groups of driven by two dc motor regulation line lead plate movement.

Vacuum circuit breakers are used for switching purposes in high voltage (HV) applications. Vacuum circuit breakers are more efficient, smaller and less expensive. VCB breakers have a much longer lifespan than conventional circuit breakers and require little maintenance. VCB (Vacuum circuit breakers) are ideal for typical utility and industrial applications.

A sound level meter is a basic noise measuring instrument, which is an electronic instrument. But it is different from objective electronic instruments such as voltmeters. When converting an acoustic signal into an electrical signal, it can simulate the time characteristic of the human ear's response speed to the sound wave; the frequency characteristic with different sensitivity to high and low frequencies and the intensity characteristic of changing the frequency characteristic at different loudness. A sound level meter is a subjective electronic instrument.

A linear actuator is an electric drive device that converts the rotational movement of the motor into the linear reciprocating movement of the pushrod. It can be used as an executive machine in various simple or complex technological processes to realize remote control, centralized control or automatic control.

A Stepper motor is an open-loop control element stepper motor that converts electrical pulse signals into angular displacement or linear displacement. By controlling the sequence, frequency and number of electrical pulses applied to the motor coils, it can realize the steering, speed and rotation angle control.

Thermocouple temperature sensors are characterized by wide range, low cost, fast response and durability. They are widely used for temperature measurement in industry. R-type thermocouples can measure high temperatures of more than 1700 degrees, and are mainly used in high temperature measurement occasions. In today's article, let's talk about how thermocouples work.

Radiation sensor works by measuring the number of small units of light, known as photons that impact a physical or chemical device located within the instrument. Solar radiation sensors are typically not powered due to the fact that the components located in the device either are influenced by or react to solar radiation in a direct manner.

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.

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.

Centrifugal pump refers to a pump that transports liquid by the centrifugal force generated by the rotation of the impeller. Centrifugal pumps are widely used and are almost indispensable equipment in process systems. The small size, simple operation and long service life of the centrifugal pump are the outstanding advantages of the centrifugal pump. If the pipeline delivery system is regarded as the vascular circulation system of the human body, then the centrifugal pump is equivalent to the heart that transports blood.

The working principle of dosing pump is relatively simple, but because it involves highly corrosive liquid and high-precision flow, it has very high requirements for every part and every process of the machine. When the coil of the electromagnet is charged, the iron core pulls the electromagnetic push rod together, and at the same time, the corresponding five springs are compressed and the liquid is quantitatively sucked in. And when the coil of the electromagnet loses power, due to the disappearance of the electromagnetic force, the compressed 5 springs will be released, so that the liquid is quantitatively discharged.

The DC-DC converter is a voltage converter that effectively outputs a fixed voltage after converting the input voltage. DC to DC converters are divided into three categories: step up DC-DC converters, step down DC- DC converters, and buck-boost DC-DC converters. Three types of controls can be used according to requirements. At present, DC to DC converters are widely used in products such as mobile phones, MP3s, digital cameras, and portable media players.

The vacuum generator is a high efficiency and small vacuum component that uses a positive pressure air source to generate negative pressure. This makes it necessary to use both positive and negative pressure in places where there is compressed air or in a pneumatic system. It is very easy and convenient to obtain negative pressure in places. Vacuum ejectors are widely used in industrial automation in the fields of machinery, electronics, packaging, printing, plastics and robotics.

The hub motor (also called wheel motor, wheel hub drive, wheel hub motor, or in-wheel motor) is characterized by the integration of power, transmission and braking devices into the wheel hub, thus greatly simplifying the mechanical part of electric vehicles. Hub motor is not a new thing, as early as 1900, already manufactured the front wheel equipped with hub motor electric vehicles, in the 1970s, hub motor technology in the field of mining transport vehicles and other applications.

Slip-ring induction motors, also known as three-phase wound-rotor AC asynchronous motors, must be connected in series with a resistor or resistors in the motor rotor in order to reduce the starting current and increase the starting torque and power factor, effectively improving the motor starting performance. This article describes the principle and structure of slip-ring motors.

Laser distance sensor is a kind of sensor which uses laser technology to measure the distance. It is generally composed of laser, optical parts and photoelectric devices. It can convert the measured physical distance into optical signals, and then use photoelectric converter to convert the optical signals into electrical signals. Through the filtering, amplification and rectification of corresponding circuits, the output signals can be obtained, so as to calculate the measured quantity.