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Photoelectric sensor is a general term for sensors that use light to detect objects. It is a device that emits light signals from the emitting part of the sensor and is reflected, blocked and absorbed by the detected object, and then detected by the receiving part and converted into corresponding electrical signals to achieve control. The photoelectric sensor consists of three parts, including transmitter, receiver and detection circuit.

The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to be rotated 90 degrees and a small torque can be closed tightly. Ball valves are most suitable for switching and shut-off valves. The valve seat sealing ring of the ball valve is usually made of plastic, so when choosing the structure and performance of the ball valve, the fire resistance and fire resistance of the ball valve should be considered, especially in the petroleum, chemical, metallurgical and other departments.

The electric ball valve is driven by an electric actuator and has the action of rotating 90°. It is mainly used for cutting, distributing and changing the moving direction of the medium.  The electric ball valve has the characteristics of compact structure, stable performance and convenient installation. It has been used more and more in many industries. It can be operated on site or controlled remotely. It is one of the final control elements in the field of automatic control. Electric ball valves may leak during use or installation.

The fan heater is a combined unit composed of ventilator, motor and air heater. Suitable for various types of workshops, when the air does not contain dust and flammable or explosive gases, can be used as circulating air heating. The heating fan can be used as heating independently. It is generally used to supplement the insufficient part of the radiator or use the radiator as on-duty heating, and the waste heat load is borne by the fan heater. In the following, there is the price list of ATO fan heater.

Colorimeters are often used in the field because they produce more accurate readings than titration or color matching. They are also often used in accounts that require higher precision because of the higher risk. Improper disposal can result in higher non-conformance costs (equipment failure or higher energy costs), wasting chemicals. But does the device alone guarantee accurate test results, or are there more factors in play? In this article, we will introduce three important points and you should keep in mind.

A ball valve is a valve with a ball as the closing part, which is mainly composed of a valve body, a valve seat, a ball, a valve stem, a handle or other driving devices, such as electric actuators, pneumatic actuators or hydraulic actuators. The ball valve is driven by the valve stem and rotates around the axis. It is mainly used for cutting, distributing and changing the flow direction of the medium in the pipeline.

Fixed gas detector, is a 24 hour online monitoring environment or pipeline Gas concentration and alarm Fixed Gas Detector. Gas detector in the industrial gas leak detection and alarm device, is the industrial toxic gas safety detection instrument. It can be fixed in the indoor and outdoor dangerous places with measured gas leakage. Play the role of on-site monitoring, if the monitoring position of toxic gas leakage, the gas detector will be in the first time, the toxic gas concentration data leakage to the gas alarm controller, the gas alarm controller for data processing. Before we know the calibration method of portable gas detector, so in this article we introduce the calibration method of fixed gas detector.

A colorimeter is an instrument that measures the color characteristics of materials. The main purpose of the colorimeter is to measure and analyze the color, hue and color value of the tested material. In order to overcome or reduce the misjudgment caused by stability, reduce the economic loss of users, and improve the efficiency of the colorimeter, it is necessary for us to analyze the main factors of insufficient stability of the colorimeter detected by the sample. In this article, we will go into details.

The ball valve is a control valve that uses a ball with a circular channel as the opening and closing part, and the ball rotates with the valve stem to realize the opening and closing action. The opening and closing part of the ball valve is a ball with a hole, which rotates around the axis perpendicular to the channel, so as to achieve the purpose of opening and closing the channel. Ball valves are mainly used to open and close pipelines and equipment media.

Most of the actuators used in industrial control applications today are pneumatic valve actuators, because the air source is used as power, which is more economical than electric and hydraulic, and the structure is simple, easy to master and maintain. From the point of view of maintenance, pneumatic actuators are easier to operate and calibrate than other types of actuators, and they can also be easily interchanged on the spot. Ideal for flammable and explosive environments when using positioners.

Pneumatic actuated ball valve is different from manual valve. It needs to be in motion and adjustment state during use, and there are many moving parts, and it also bears the impact of various forces such as the unbalanced force of the medium. It is inevitable that various unexpected failures will occur. These failures could be actuators, regulators, and possibly from attached accessory devices. When a fault occurs, it must be dealt with and solved in time, so as not to delay the operation of the equipment of the entire project. Next, let's take a look at the common failure causes and solutions of pneumatic ball valves.

Compared with the general horizontal pump or vertical sewage pump, sewage pump compact structure, small footprint. Small sewage pumps can be installed freely, large sewage pumps are generally equipped with automatic coupling devices can be installed automatically, installation and maintenance is quite convenient. Submersible sewage pump because of the pump and motor coaxial, shaft short, rotating parts light weight, so bearing load is relatively small, life is much longer than the general pump. There is no cavitation damage and irrigation water and other problems. In this article, we introduce the maintenance of sewage pump.

A colorimeter is a device used for colorimetric measurements that measures the absorbance of a specific solution of light of a specific wavelength. Colorimeter is used more and more widely in printing. Whether in screen printing or any other printing method, colorimeters have become an essential piece of equipment in the printing process. in many fields. On top of that are ink color matching, color management and print quality checks.

Pneumatic actuated ball valve is an opening and closing control device that operates the valve through compressed air. It not only has fast switching speed, but also only needs one air source, which not only saves a lot of human resources and time, but also does not require on-site operation or high-altitude and dangerous introduction of manual operation. Remote centralized control greatly improves and ensures the safety of use. Therefore, the more widely used in the industrial field, the larger the amount of use and the faster the consumption. In order to enhance the service life of the pneumatic ball valve, daily maintenance is essential.

The ball valve is evolved from the plug valve. It has the same lifting action of rotating 90°, the difference is that the cock body is a sphere with a circular through hole or channel through its axis. The ratio of the spherical surface to the channel opening should be such that when the ball rotates 90°, all spherical surfaces should appear at the inlet and outlet, thereby truncating the flow. The ball valve can be closed tightly with only a 90° rotation operation and a small torque. The completely equal valve body cavity provides a low resistance, straight-through flow path for the medium.

The physical nature of infrared radiation is thermal radiation. The higher the temperature of the object, the more infrared radiation it emits, and the stronger the energy of the infrared radiation. The study found that the various thermal effects of the solar spectrum gradually increase from violet light to red light, and the largest thermal effect occurs within the frequency range of infrared radiation, so people turn infrared radiation into thermal radiation or heat. The infrared temperature sensor uses the radiant heat effect to cause the detection device to receive radiant energy and cause the temperature to rise, thereby changing the performance of a column in the sensor and the temperature.

Thermal overload relays are protective appliances used for overload protection of motors or other electrical equipment and electrical lines. In the actual operation of the motor, for example, in the process of dragging the production machinery to work, if the machinery is abnormal or the circuit is abnormal and the motor is overloaded, the motor speed will drop and the current in the winding will increase, which will make the winding temperature of the motor. If the overload current is not large and the overload time is short, and the motor winding does not exceed the allowable temperature rise, this overload is allowed.

Sewage pump with compact structure, suitable for conveying liquid containing hard solid, fiber and especially dirty, sticky, slippery liquid. ATO submersible sewage pump is mainly composed of impeller, pump body and base submersible motor. Pump and motor are the same shaft, because the pump is located at the bottom of the whole sewage pump, it can maximize the suction of accumulated sewage on the ground. In this article, we mainly introduce the use of sewage pump some considerations. Understanding these points, we can better use sewage water submersible pump.

Colors surround us all the time and affect our emotions, behaviors and beliefs in conscious or unconscious ways. Colors can set emotions, warn us of danger, give us important information, and even bring us joy. Despite its ubiquity, description of color remains elusive, in part because different people perceive color differently. Two of the most advanced types of color measurement instruments are colorimeters and spectrophotometers, both of which use sophisticated technology to precisely quantify and define color. In this article, we will introduce the differences between colorimeter and spectrophotometer.

Colorimeter is also called the color meter, it is a kind of measuring instrument for material color characteristics, colorimeter is primarily used to measured the color of the material, color, color value measurement and analysis, if the colorimeter machine with computer, can improve the ability of analysis and processing of color, and the user can according to need to color from computer storage in the library to find out all kinds of data for color matching. In this article, we will introduce some basic about colorimeter.