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Endoscope, also known as borescope or endoscope camera, is a multidisciplinary universal tool. Its function is to explore the depths of curved pipes, observe the parts that cannot be directly seen, observe the internal space structure and state in a sealed cavity, and realize long distance observation and operation. Endoscopes are mainly divided into optical endoscope and electronic endoscope.

Rigid couplings are divided into flange couplings, radial key flange couplings, sleeve couplings, jacket couplings and parallel shaft couplings Flange couplings: use bolts to connect the two halves The flange of the shaft coupling realizes the coupling of the two shafts. Radial key flange coupling: the coupling of the two halves of the coupling is connected by radial keys and ordinary bolts. Sleeve Coupling: using a common sleeve Couplings that connect two shafts in a certain way Couplings: Couplings that are clamped in some way to achieve two-shaft coupling using two axially split collets. Parallel shaft couplings: use Coupling in which the intermediate disc passes through the pin to realize the connection of two parallel shafts.

Pressure sensor is a device that senses a pressure signal and converts the pressure signal into a usable output electrical signal. Under the interference of external factors, the output of the sensor usually has unneeded changes that have nothing to do with the input. This type of change is called "temperature drift", and the main reason for drift is that the sensitive components of the measurement system are usually easily interfered by external temperature, humidity, electromagnetic interference and sensor conditioning circuits.

The sound level meter measurement is to convert the vibration wave signal of the metal diaphragm of the microphone (microphone head) at the front of the sound level meter into an electrical signal through the vibration wave caused by the sound signal (sound wave), and then pass through the special weighting network and circuit. After the operational amplification, the noise decibel value is displayed by digital or meter.

Devices that can measure pressure and provide remote electrical signals are collectively referred to as pressure sensors. The pressure sensor is an important part of the pressure detection instrument, and its structure is varied, the common types are strain type, piezoresistive type, capacitive type, piezoelectric type, vibration frequency pressure sensor and so on. In addition, there are photoelectric, optical fiber, ultrasonic pressure sensors and so on. The pressure sensor can directly convert the measured pressure into various forms of electrical signals, which is convenient to meet the requirements of centralized detection and control of the automation system, so it is widely used in industrial production.

Static eliminator refers to the production and life used to eliminate static equipment. The static eliminator should be installed in the place where the electrostatic potential of the charged body is highest. The electrostatic tester can be used to measure the whole production line and find out the position of the highest electrostatic.

Multi-cell dry batteries are the most used in sound level meters, but batteries have their service life. Sometimes when the battery voltage is insufficient, the measured data will be inaccurate. This requires timely replacement of batteries when they are used to a certain extent. Usually, the sound level meter will set the indicator to check the battery status. Just press the battery check button, and the voltage of the battery can be displayed at a glance.

When an electrical circuit has two contactors and only one of them needs to be turned on at a time then the interlocking system is used. The interlocking system ensures that only one contactor can be on while another one will be in off condition even if we try to manually on.

A variable-frequency drive (VFD) is a type of motor drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and, depending on topology, to control associated voltage or current variation. VFDs can be used to control AC motor speeds by changing the motor's frequency without sacrificing the output power of the motor. This is done by turning the speed pot (explained in section three) of an AC motor drive.

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.

Today, we will introduce tips about the precautions and troubleshooting of the spectrophotometer. We hope that after reading this article, you can use the spectrophotometer more rationally, protect your spectrophotometer, and prolong the service life of the spectrometer.

The electrical measuring instrument in the pressure measuring instrument is usually called a pressure transducer (pressuretransducer). It is a sensor that converts the pressure signal into a voltage signal output. Usually the pressure sensor is generally composed of elastic sensing element and displacement sensing element. The function of the elastic sensing element is to make the measured pressure act on a certain area and convert it into displacement or strain, and then the displacement sensing element or strain gauge converts it into an electrical signal that has a certain relationship with the pressure. Sometimes the functions of these two elements are combined. 

With the development of electronic technology, especially large-scale integrated circuit and computer technology, frequency weighting, detector and filter circuit in sound level meter are all realized by digital signal processing technology instead of analog circuit. This not only makes the circuit simpler and wider dynamic range, but also greatly improves the function and stability, especially for real-time spectrum analysis. A sound level meter is an instrument that measures the sound pressure level and sound level according to a certain frequency weighting and time weighting. It is the most commonly used instrument in acoustic measurement, which can approximate the noise level of industrial noise, traffic noise, environmental noise and living noise according to the characteristics of human hearing. It can be applied to the measurement of environmental noise, mechanical and electrical product noise, traffic noise, architectural acoustics and electro-acoustics.

An air motor (pneumatic motor), or compressed air engine, is a type of motor which does mechanical work by expanding compressed air. Pneumatic motors generally convert the compressed air energy to mechanical work through either linear or rotary motion. With proper using and maintenance, you can be sure that your air motor will maintain a high level of performance for many years. And it is easy to maintain an air motor. Basically, there are two key elements to pay attention to: lubrication and filtration.

Pure sine wave inverters have strict requirements for function and parameters. It is more expensive and can be used in electronic circuits that require higher waveform parameters. The ordinary inverter is a hybrid waveform of a sine wave, square wave, clutter and other components, which can be used for general electrical appliances, and the price is low.

As the temperature drops, so does the humidity, especially indoors, where our heaters inconveniently deprive the air of moisture. This leads to chapped lips and dry skin, and static electricity tends to build up on non-conductive surfaces. When we use the static eliminator, there will also be various problems. This article will tell you how to solve the problem.

The air source used must be effectively filtered. Sometimes a secondary filter is required. Filters should be cleaned in time. Otherwise: water, oil and dust/ dust particles can enter the ion generation chamber and adhere to the inner wall of the plastic component. At a certain point, the ionic needle ignites it. Results cellular coke loss was gradually formed in plastic parts, and ion discharge decreased gradually. In particular, it creates security risks.

The air motor is mainly composed of stators, rotors, vanes and other parts. There are air distribution slots or holes for intake and exhaust on the stator, and long slots are milled on the rotor, and there are blades in the slots. The two ends of the stator are provided with sealing covers, and the sealing covers are provided with arc-shaped grooves which communicate with the inlet and exhaust holes and the bottom of the blade. The rotor and stator are eccentrically installed. In this way, several sealed working volumes are formed by the outer surface of the rotor, the blades (between the two blades), the inner surface of the stator and the two sealing end covers.

Diesel engines have been used in many industries and equipment since they were produced, including generators powered by diesel engines. The diesel-powered generators have no spark plugs, and their efficiency comes from compressed air. We all know that diesel-fueled internal combustion engines ignite the atomized fuel by injecting diesel into the combustion chamber, and the temperature of the compressed air in the cylinder increases, so it can burn instantly without spark ignition. Also, due to the high energy density content of diesel, diesel can provide more power than gasoline when burning the same volume of fuel.

No matter where you are, you can be affected by a power outage, especially in winter. Likewise, there are many industries that must have a reliable backup method to safely generate electricity when needed. For backup power systems, there are many types of generators that can be used to generate electricity in times of emergency. For now, there are two main types of generators, namely diesel generators and gas generators. However, what is the specific functions of these generators? Let’s learn about some differences between diesel and gas generators so that we can choose the most suitable backup power system.