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An electric hot knife refers to a hand-held knife that uses electric energy to generate heat to achieve cutting. There are mainly two electric hot knives with different principles on the market. A relatively simple method is to install an electric heating wire inside the knife to generate heat after being energized. The advantages of this electric hot knife are low price, low cost, and simple structure. The disadvantage is that the blade is relatively thick and the preheating is slow, so it can only be used to cut foam products.

Daily maintenance - after each use of Electric Pressure Washer
1. Flush the hoses and filters connected to the detergent to remove all detergent residues to help prevent corrosion.
2. Turn off the water supply connected to the electric pressure washer.
3. Release all pressure from the hose by pulling the trigger on the servo gun lever.
4. Remove the rubber hose and pressure hose from the electric pressure washer.
5. Turn the electric source switch to the "on" and "off" positions four to five times for 1-3 seconds each to remove water from the pump. This procedure helps protect the pump from damage.

Programmable Logic Controller, short for PLC, is a digital electronic device with a microprocessor. The device is a digital logic controller for automatic control, which can load control instructions into the memory at any time for storage and execution. The programmable controller is composed of internal CPU, instruction and data memory, input and output units, power supply modules, digital and analog units.

When the PLC is put into operation, its working process is generally divided into three stages, namely input sampling, user program execution and output refresh three stages. Completing the above three stages can be called a scan cycle. During the entire operation, the CPU of PLC repeatedly executes the above three stages at a certain scanning speed.

All motors with external characteristics of DC motors that use electronic commutation are collectively referred to as brushless motors. Due to the emergence of brushless DC motors, the strict boundaries between AC-DC speed regulation systems have been broken. In the history of the development of brushless motors, there have been two major structures of brushless motors with great difference, which are brushless DC motors and AC commutated brushless motors.

The electric energy of the bldc motor is finally supplied in DC mode. Based on the method of obtaining DC power, there are two main implementation methods for brushless DC motors: AC-DC-AC control system and DC-AC control system, which are known as square wave.

The portable refractometer is used to continuously measure the refractive index of the medium during the process. It can mainly measure the temperature and density of medium, including salinity, milk, brix, alcohol, antifreeze, coolant, wine and honey, and also can be used for beer brewing. The handheld refractmeter also named as brix refractometer, is applied in food industry, breeding industry, auto repair industry and many other fields.

Industrial vacuum cleaner is an environmentally friendly cleaning equipment commonly used in industry. The equipment is used to collect waste, filter and purify the air in the industrial production process, and clean the dust and particles in the environment. Industrial vacuum cleaners are widely used in various fields such as textiles, chemicals, machinery, medicine, casting, etc., which can prevent some occupational disease hazards and improve production efficiency.

UV spectrophotometer is a commonly used photometer product. With it, light of different wavelengths can be arbitrarily selected in the ultraviolet-visible region. The instrument has the advantages of stable performance, flexible use, high reliability, and easy maintenance. The UV spectrophotometer needs to be calibrated when in use. The following is the calibration method of the UV spectrophotometer.

Hall sensor can also be called as the Hall encoder. The Hall sensor in the brushless DC motor controller is used to detect the rotation speed of the bldc motor. In some applications, it is necessary to adjust the speed of the brushless DC motor, and to ensure that the bldc motor remains unchanged at a certain speed, so it is necessary to add a Hall sensor that detects the speed for feedback. The brushless DC motor controller will output different control pulse signals according to the detected speed value, and finally achieve the purpose of quickly adjusting the speed of the brushless DC motor.

The pH meter is an important tool for measuring and reacting the pH of the solution, and the pH electrode can realize the function of detecting pH value and output signal by supporting the pH meter. There are various models and products of pH meters. The display mode is also divided into two options: pointer display and digital display. However, no matter how the type of pH meter changes, its working principle is the same. The main body of the pH meter is a precision potentiometer. A pH meter consists of a reference electrode, a glass electrode and itself.

The electric welding machine makes full use of the high-temperature arc generated when the positive and negative poles are short-circuited instantaneously to melt the solder on the welding rod and the material to be welded, so that the contacted objects are combined. Electric welding machines are generally divided into two types according to the type of output power, one is AC power and the other is DC. The welding machine uses the principle of inductance. The inductance will produce huge voltage changes when it is switched on and off. The welding machine makes full use of the high-pressure arc generated when the positive and negative poles are short-circuited instantaneously to melt the solder on the welding rod and the material to be welded, so as to realize atom integration.

If the brushless dc motor without Hall sensor is broken, it cannot be replaced with the brushless dc motor with Hall sensor. The hardware drive circuit of these two motors is different, so is the program code, thus the bldc motors will not work after the replacement. ATO will tell you why.

1. The hardware circuit of a motor with Hall sensor and a motor without Hall sensor is different.

For a three-phase bldc motor, a brushless dc motor with Hall sensors has eight wires: 3 three-phase motor wires, 3 Hall wires, and 2 Hall power wires. There are three Hall chips inside the brushless dc motor with Hall sensor. When the motor is working, the real-time position of the rotor can be displayed to the control board in the form of waveform. Based on the waveform, the position of the rotor and the rhythm to start the brushless dc motor will be determined by the control board.

As one of the most common types of relays, timer relay plays a very important role in the electrical control system. The principle is to complete the control of the line by keeping the input signal for a certain period of time-that is, "delay effect", and then continue to execute the command of the input model. When choosing a timer relay, the most important factors to consider are the delay range, delay type, delay accuracy and working conditions. For sure, some basic factors will not be ignored, such as the selection of rated operating voltage and rated operating current.

Voltage stabilizer is a power supply circuit or power supply device that can automatically adjust the output voltage. Its function is to stabilize the voltage of the power supply that fluctuates greatly and does not meet the requirements of electrical equipment within the set value range. The purpose of voltage stabilizer is to enable various circuits or electrical equipment to work normally under the rated operating voltage.

At the very beginning, the voltage stabilizer stabilized the voltage through the beating of the relay. When the voltage of the grid fluctuates, the automatic correction circuit of the voltage stabilizer will be activated to activate the internal relay and force the output voltage to remain close to the set value. The advantage of this circuit is that the circuit is simple, but the disadvantage is that the voltage regulation accuracy is not high, and every beat and shift of the relay will cause an instantaneous interruption of the power supply and spark interference.

For vibration motors, burning down is a common fault. So why does the vibration motor burn down? How to prevent it? This article will introduce the specific reasons and preventive measures for this, from the 6 points of anchor bolts loosening, installation, eccentric block adjustment, sealing of the protective cover, ambient temperature and heat dissipation.

1. When testing, it is necessary to pay attention to the metal magnetic properties and surface roughness of the standard plate should be similar to the test piece.

2. When measuring with ultrasonic thickness tester, the probe of the ultrasonic thickness gauge must be perpendicular to the surface of the sample.

3. When measuring, pay attention to the critical thickness of the base metal. If it is greater than the critical thickness, the measurement is not affected by the thickness of the base metal.

4. When measuring, pay attention to the influence of the curvature of the test piece on the measurement. Therefore, it is not reliable to measure on the curved surface of the test piece.

5. Before measuring, you need to pay attention to whether other electrical equipment around will generate magnetic field. Because if a magnetic field is generated, it will interfere with the magnetic thickness measurement method.

Pneumatic cylinder is a pneumatic actuator. It can convert air pressure energy into mechanical energy and can do linear reciprocating motion. This article will introduce 3 common failures of pneumatic cylinders and give troubleshooting. The 3 types of failures are: Pneumatic cylinder action has failure or mal-operation. Pneumatic cylinder is unable to drive load when working. Pneumatic cylinder piston slippages or crawls.

Spectrophotometer is also called spectrometer, which is a scientific instrument that decomposes complex light into spectral lines. Using spectrophotometry, the spectrophotometer measures the absorbance of the measured substance at a specific wavelength or within a certain wavelength range to perform qualitative and quantitative analysis of the substance. The basic principles of different types of spectrophotometers are similar. They all use a light source that can generate multiple wavelengths, through a series of light splitting devices, to form a light source of a specific wavelength. After the light source passes through the test sample, part of the light source is absorbed. Subsequently, by measuring the absorbance of the sample, it can be converted into the concentration of the sample after calculation. The absorbance of the sample is proportional to the concentration of the sample.

Nowadays, many automation equipment manufacturers have begun to pay attention to brushless DC motors. They want to use brushless DC motors to replace induction motors, stepper motors, etc., which have many defects such as low efficiency, high noise, and high power consumption. Recently, ATO has also received many inquiries from new and old customers: Do BLDC motors and brushed DC motors both rotate when powered? Actually not. Brushless DC motors must be equipped with corresponding controllers to rotate. This is determined by the structural principle of the brushless dc motor.

The servo motor can make the speed and position control accuracy become very accurate, and can convert the voltage signal into torque and speed to drive the control object. The speed of the servo motor rotor is controlled by the input signal and can react quickly. In automatic control systems, servo motors can be used as actuators. Servo motor has the characteristics of small electromechanical time constant and high linearity, and it can convert the received electrical signal into angular displacement or angular velocity output on the motor shaft. It can be divided into two categories: DC and AC servo motors. Its main feature is that there is no autorotation when the signal voltage is zero, and the speed decreases at a uniform speed with the increase of torque.

A magnetic stirrer also known as magnetic mixer is a kind of laboratory equipment which is mainly used for stirring or heating stirring in low-viscosity liquid or solid-liquid mixing experiments. A rotating magnetic field is generated under the container plate, and the principle of homosexual repulsion and heterosexual attraction is used to push the magnetic stirring rod in the container to rotate rapidly, thereby achieving the purpose of stirring. The plate usually has a heating function to meet more experimental needs.