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A solid state relay is an all-electronic circuit combination component that relies on the electromagnetic and optical properties of semiconductor devices and electronic components to complete its isolation and relay switching functions. Compared with the traditional electromagnetic relay, the solid state relay is a relay without machinery and no moving parts, but has essentially the same function as the electromagnetic relay.

Gas detector is a kind of gas leakage concentration detection instrument tool. ATO sells portable gas detector that continuously and rapidly monitors specific concentrations of gases in the surrounding environment or confined spaces. But it in use after a period of time due to multiple sensor detection, there may be misoperation and other reasons, may lead to increased errors in the gas detector, measurement data is not accurate. In this article, we will introduce the calibration of gas detectors.

Solid state relay, short for SSR, is a non-contact switch composed of microelectronic circuits, discrete electronic devices, and power electronic power devices. The isolation device is used to realize the isolation between the control terminal and the load terminal. The input end of the solid state relay uses a tiny control signal to directly drive a large current load. So, how to maintain a solid state relay?

The float level switch is simple in structure, easy to use, stable in performance, long in service life, and easy to install and maintain. It is almost suitable for liquid level measurement and control in various industrial automation process control, and is widely used in petroleum, food, chemical, water treatment, liquid level measurement, control and monitoring in the fields of pharmacy, electric power, papermaking, metallurgy, ships and steel furnaces.

There should be no obstacles in the area radiated by the emitted ultrasonic beam between the emitting surface of the ultrasonic liquid level sensor probe and the surface of the medium to be measured. Therefore, the installation should be avoided as far as possible from the internal facilities, such as brackets, on-site equipment and so on. When installing the level sensor, the sensor must be kept at a certain distance from the tank wall, and the transmission direction of the transducer should be perpendicular to the liquid surface as much as possible.

Have you ever dropped a bunch of nails or screws in your yard and thought, "How can I find all these things?" Magnets to the rescue! Magnet cleaners use magnets to pick up ferrous materials like nails, screws , nuts and bolts. They are very useful in the house or workplace to help prevent punctures or damage to machines. But what should we pay attention to when we buy magnetic sweeper? I hope the following points can help you.

Air operated diaphragm pump is a new type of conveying machinery, and it is the most novel type of pump at present. Using compressed air as the power source, it can absorb all kinds of corrosive liquids, liquids with particles, high viscosity, volatile, flammable and highly toxic liquids. However, many customers have some problems in the process of using the AODD pump. Then, we will troubleshoot the air diaphragm pump next.

A breaker which used vacuum as an arc extinction medium is called a vacuum circuit breaker (vcb breaker). In this circuit breaker, the fixed and moving contact is enclosed in a permanently sealed vacuum interrupter. The arc is extinct as the contacts are separated in high vacuum. It is mainly used for medium voltage ranging from 11 kV to 40 kV. In this article, we will introduce the routine maintenance of vcb circuit breaker.

Sewage pump is a pump and motor connected, and at the same time into the liquid pump products, compared with the general horizontal pump or vertical sewage pump, sewage pump compact structure, small footprint, easy installation and maintenance. In this article, we will introduce two kinds of technology of submersible sewage pump. The so-called auxiliary impeller hydrodynamic seal refers to the installation of an open impeller in the opposite direction near the back cover of the impeller of the sewage pump.

The working principle of electromagnetic relay is that when the electromagnet is energized, the armature is sucked down to make the two contacts, and the working circuit is closed. When the electromagnet loses its magnetism, the spring pulls the armature up, cutting off the working circuit. It is usually used in automatic control circuits. It is actually an automatic switch that uses a smaller current to control a larger current, so it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit.

If you own a building with an emergency generator electrical system integrated into its frame, routine automatic transfer switch maintenance is critical to ensure that you can function properly while utilizing the system. Automatic transfer switches monitor the voltage levels of the building's normal power supply and switch to emergency power when these voltage levels fall below a certain preset threshold. If a particularly severe storm or rolling blackout disrupts your main power source, an automatic power transfer switch will seamlessly and efficiently activate your emergency power system. So how do you test the performance of auto transfer switch?

What is the maintenance method of rubber sheet? Rubber plate itself has a certain weight, has a good grip, can be directly attached to the ground, generally do not need glue fixed. The joints can be cut into 45 degrees of slope with wallpaper knife. No obvious gap can be guaranteed through alignment and joint stitching, which does not affect the beauty and normal use of insulation glue. If the appearance requirements are strict, welding gun can be used to connect. Next, let's look at the maintenance methods of rubber sheet in detail.

As the application and ambient temperature change, DC cooling fans with different speeds are sometimes required to meet the cooling requirements of the device, and the DC cooling fans pass through. A heat dissipation device that converts electrical energy into machinery to drive fan blades through DC voltage and electromagnetic induction. In simple terms, the coil and the IC are constantly switched, and the induction magnetic ring starts to rotate from the fan blade. Therefore, it has good heat dissipation effect and is widely used. In this article, we will introduce some methods to deal with common faults of direct current cooling fan.

The air operated double diaphragm pump relies on the air compressor to input the compressed air into the air distribution valve of the diaphragm pump to drive the connecting shaft in the intermediate body of the diaphragm pump to drive the diaphragm pump diaphragm in the medium chamber of the diaphragm pump body to do lateral stretching movement to achieve self-priming fluid. Positive displacement reciprocating pump. In the two symmetrical working chambers of the pump, an elastic diaphragm is installed in each, and the connecting rod integrates the two diaphragms.

Float switch: When the float liquid level switch floats according to the rise and fall of the float ball with the rise and fall of the liquid level, the magnet in the float ball attracts the contacts of the reed switch to generate the action of opening and closing, and then gives the on-off signal. Capacitive level sensor: The capacitive liquid level sensor determines whether there is liquid by detecting the conductivity or insulation rate of the medium. It can be simply understood as judging whether there is water or no water according to the change of the detected capacitance value, and outputting high and low level signals (0 and 1 digital signals).

A peristaltic pump usually refers to a pump with a small output pressure and an output flow of 0~30L/min. It is widely used in pharmaceutical, food, chemical and other industries to transport some sensitive, viscous, strongly corrosive, grinding, high-purity, and certain granular materials. So, when using a peristaltic pump, how should we improve its working efficiency?

Submersible sewage pump is a solids handling pump with a large outlet and a powerful motor, designed to move liquid and sewage waste up to 2 inch in diameter. When we use sewage pump, there are also a lot of points to pay attention to, such as electric pump housing ground wire must be received in strict accordance with the relevant regulations; Do not wash items nearby when submersible pump is working; After the pump is connected, the direction of rotation from the inlet is counterclockwise. In this article, we will introduce some precautions when using sewage pump.

The liquid level float switch is a liquid level control part with a simple structure and convenient use. It is equipped with a complex circuit and will not be disturbed. As long as the material is selected correctly, any liquid, pressure and temperature can be used. The float switch uses magnetic operation, no mechanical connection, simple and reliable operation. It has been widely used in the shipbuilding industry, generator equipment, petrochemical industry, food industry, water treatment equipment, dyeing and finishing industry, hydraulic machinery, etc. When the float switch is floated by the measured medium, the float drives the main body to move, and the magnet at the other end of the float will control the magnet on the switch action lever.

Laser distance measurement is based on the same principle as radio radar. After the laser is aimed at the target and fired, its round-trip time is measured and multiplied by the speed of light to obtain the round-trip distance. Since laser has the advantages of high directionality, high monochromaticity and high power, which are crucial for measuring long distances, determining the orientation of the target, improving the signal-to-noise ratio of the receiving system, and ensuring the measurement accuracy, laser rangefinders are gaining more and more attention. Based on the laser rangefinder, LIDAR can not only measure the distance, but also the target's orientation, speed and acceleration. It has been successfully used for the ranging and tracking of artificial satellites.

A well pump refers to a water pump that submerges the impeller into a well to pump water. According to the depth of groundwater extraction, it is divided into deep well pump and shallow well pump. A well pump with a lift below 50 m is called a shallow well pump, and a well pump with a lift above 50 m is called a deep well pump.