The induction cooker, also known as the induction cooker, is the product of the modern kitchen revolution. It does not require open flame or conductive heating to allow heat to be generated directly at the bottom of the pot, so the thermal efficiency has been greatly improved. It is an energy-efficient kitchen that is completely different from all traditional fire- or fire-free conductive kitchen utensils. The induction cooker is an electric cooking appliance made by the principle of electromagnetic induction heating. It consists of a high-frequency induction heating coil (ie, an excitation coil), a high-frequency power conversion device, a controller, and a ferromagnetic material pot bottom cooker. When in use, an alternating current is introduced into the heating coil, and an alternating magnetic field is generated around the coil. The magnetic field lines of the alternating magnetic field mostly pass through the metal pot body, and a large amount of eddy current is generated in the bottom of the pot, thereby generating heat required for cooking. There is no open flame during the heating process, so it is safe and hygienic. How to choose the induction cooker Observe the appearance of the furnace surface When we purchase the induction cooker, we should pay attention to whether the furnace surface is flat. If the furnace surface is convex or concave or inclined, it will affect the normal generation of thermal efficiency. In addition, the selection of the furnace surface is also very important, and the poor quality of the induction cooker surface is easy to change color, deformation or even crack. At present, the panels used by the major induction cooker brands are mainly Schott, Japan NEG board and domestic common board. At the same time, the domestic board is divided into three grades of ABC. The C-class panel is slightly in heat resistance and is prone to yellow discoloration, and B The edge of the panel is slightly rough and the gloss is not ideal. Key components: The quality of the induction cooker depends on the quality of the high-frequency high-power transistors and ceramic glass-ceramic panels. When purchasing, be sure to purchase a single high-power transistor induction cooker with high speed, high voltage and high current. Because of its good quality, excellent performance, high reliability and damage. panel In the core part of the induction cooker, whether the magnetic flux penetrates the top plate of the induction cooker is sufficient, directly reflected in the heating effect of the induction cooker on the pan. On the shelves of the homes of Fulai Electric Appliances, there are many varieties of induction cookers with different texture panels. Supor's shopping guide Tang Qinghua told reporters that at present, most of the induction cookers are sold in the market are microcrystalline panels, in addition to black crystal panels and ceramic panels. heat sink Since the induction cooker generates a lot of heat during operation, the function of the built-in fan is very important for the induction cooker. The good induction cooker generally uses an imported DC cooling fan, which has good heat dissipation and low noise, which helps to prolong the service life. The advantages and disadvantages of the radiator can be identified in two ways: when the induction cooker is not working, turn it over and shake it to observe, the fan blade and the shaft, the shaft and the bearing should have no gap and no looseness; when the induction cooker is working In addition to the normal sound of the cooling fan in the furnace, the coils and other parts in the induction cooker must not have sounds such as current hum and vibration. The rotation of the blade should be smooth, without missing or swaying. reliability Buying products from well-known manufacturers should also be an important aspect that we should notice when purchasing an induction cooker. Only manufacturers with good reputation, strong strength and quality of products can produce safe, qualified and reliable products that make our daily cooking safer. Cost-effective modern induction cooker is very powerful, integrating fried, fried, steamed, boiled, fried and many other functions, but remember that not all functions are practical! Everyone should choose their own induction cooker according to their own Actual needs, do not blindly pursue functional completeness.
The liquid level transmitter can convert the changes of various level parameters into analog signals, and transmit them to the control room remotely for centralized display, alarm or automatic control of secondary instruments or computers. Its good structure and installation method can be applied to the continuous detection of liquid level, material level or material level under special conditions such as high temperature, high pressure, strong corrosion, easy crystallization, anti-clogging, anti-cold junction, and solid powdery and granular materials. , can be widely used in detection and control in various industrial processes.
Liquid level transmitters can be applied to liquid Level Measurement and control in industrial sites, rural water supply and sewage treatment, petroleum, chemical industry, power plants, hydrological monitoring, reservoirs, dams, hydropower construction and other fields of liquid level measurement and control. Liquid level transmitters have input type, straight rod type, flange type, threaded type, inductive type, screw-in type, floating ball structure design, with anti-blocking type design, simple device, convenient use and strong interchangeability , The high-quality sensor has high sensitivity and fast response speed, accurately reflects the slight changes in the flow or static liquid level, and has high measurement accuracy.
Advantages of Level Transmitters
1. The device is simple, easy to use, and has strong interchangeability.
2. It is suitable for measuring the liquid level and interface of the liquid medium in the container. In addition to on-site instructions, it can also be equipped with remote transmitters, alarm switches, and complete detection functions.
3. The reading is intuitive and eye-catching, and the direction of the observation indicator can be changed according to the user's needs.
4. The measurement range is large, not limited by the height of the storage tank.
5. The indicating mechanism is completely isolated from the measured medium, with good sealing performance, high reliability and safe use.
6. Simple structure, convenient installation, convenient maintenance, corrosion resistance, no power supply, explosion-proof.
7. The high-quality sensor has high sensitivity and fast response speed, accurately reflects the slight changes of flowing or static liquid level, and has high measurement accuracy.
8. With intrinsically safe explosion-proof and isolated explosion-proof capabilities, it can be used in various dangerous places.
9. With anti-blocking design, it can realize the measurement of the liquid level of paste medium.
10.100% equal division scale, LED/LCD indicator head, very convenient to read on site.
11.4~20mA two-wire signal transmission, strong anti-interference ability and long transmission distance.
12. Exquisite and unique zero point, full scale, and nonlinear compensation ensure the accuracy and stability of the instrument within the range of operating conditions.
13. The Pressure Sensor directly senses the liquid level pressure and is not affected by the foaming and accumulation of the medium.
14. Wide range of tested media can be used, such as oil, water and paste, with certain anti-corrosion ability.
Classification of liquid level transmitters
1. Single flange liquid level transmitter
Single-flange liquid level transmitters have flat flanges and flange liquid level transmitters with insert barrels, both of which are suitable for single-flange liquid level transmitters that use the gravity of the medium to be measured to measure the height of the liquid level. For medium with high viscosity and easy crystallization, it is generally used in open containers or equipment installations.
2. Double flange liquid level transmitter
The double-flange liquid level transmitter is a Differential Pressure Transmitter, which provides a reliable measurement method to prevent the measured medium from directly contacting the isolation diaphragm of the transmitter. The main features are the need to isolate the high-temperature medium from the transmitter, the measurement medium has a corrosive effect on the sensitive components of the transmitter, the suspension liquid or high-viscosity medium, the measured medium solidifies or crystallizes due to changes in the environment or process temperature, and the measured medium is replaced It needs to be strictly purified to measure the first class. Double flange liquid level transmitter is mainly used in the measurement of liquid level in sealed pressure vessels.
3. Submersible liquid level transmitter
The submersible liquid level transmitter has rod type and arm type. Its principle is based on the principle that the measured liquid static pressure is proportional to the height of the liquid. It uses the piezoresistive effect of diffused silicon or ceramic sensitive elements to convert the static pressure into electricity. Signal. After temperature compensation and linear correction, it is converted into 4~20mA current signal output. Due to the characteristics of this transmitter, such as convenient installation, strong adaptability, etc., it can perform high-precision measurement from water, oil to paste with high viscosity, and is not affected by the foaming and accumulation of the measured medium. It is generally used in open Devices for mouthpieces or equipment.
Level Transmitter,Differential Pressure Level Transmitter,Submersible Level Transmitter,Level Gauge Wuxi Winsun Automation Instrument Co., Ltd , https://www.jswxwinsun.com
