dual band combiner converts infrared radiation emitted by an object (such as molten steel) into electrical signals. The infrared radiation energy corresponds to the temperature of the object (such as molten steel). Based on the converted electrical signals, the temperature of the object (such as molten steel) can be determined.

Modern development

Infrared thermometry technology has been developed to scan the temperature of the surface with thermal changes, determine the temperature distribution image, quickly detect the hidden temperature difference, this is the infrared thermal imager. Infrared thermal imager was first used in **, the United States TI company 19 years developed the world's first infrared scanning reconnaissance system. Since then, infrared thermal imaging technology has been applied to aircraft, tanks, warships and other weapons in western countries. As a thermal sight system for reconnaissance targets, it has greatly improved the ability to search and hit targets. However, how to make the infrared temperature measurement technology be widely used is still an application topic worth studying at present.

Working principle of the dual band combiner

The dual band combiner consists of an optical system, a photodetector, a signal amplifier, signal processing, and display output. The optical system gathers the target infrared radiation energy in its field of view. The size of the field of view is determined by the optical parts of the thermometer and their positions. Infrared energy is focused on the photodetector and converted into a corresponding electrical signal. The signal passes through the amplifier and signal processing circuit, and is converted into the temperature value of the measured target after correction according to the algorithm of the instrument internal therapy and the target emissivity.

In nature, all objects with temperatures above ** zero are constantly radiating infrared energy into the surrounding space. The amount of infrared radiation energy of an object and its distribution by wavelength have a very close relationship with its surface temperature. Therefore, by measuring the infrared energy radiated by the object itself, it can accurately measure its surface temperature, which is the objective basis of infrared radiation temperature measurement.

A black body is an idealized radiator that absorbs all wavelengths of radiant energy, has no reflection or penetration of energy, and has an emissivity of 1 on its surface. However, almost all actual objects in nature are not black bodies. In order to clarify and obtain the distribution law of infrared radiation, appropriate models must be selected in theoretical research, which is the quantized oscillator model of body cavity radiation proposed by Planck. Thus, Planck's law of blackbody radiation is derived, namely, the spectral radiance of blackbody expressed by wavelength. This is the starting point of all infrared radiation theory, so called blackbody radiation law. In addition to the radiation wavelength and the temperature of the object, the radiation amount of all actual objects is also related to the material type, preparation method, thermal process, surface state and environmental conditions. Therefore, in order for the blackbody radiation law to apply to all practical objects, a proportional coefficient related to the properties of the material and the state of the surface must be introduced, that is, the emissivity. This coefficient indicates how close the actual object's thermal radiation is to the blackbody radiation, with a value between zero and a value less than 1. According to the radiation law, as long as you know the emissivity of the material, you know the infrared radiation characteristics of any object. The main factors affecting the emissivity of yarn are material type, surface roughness, physical and chemical structure and material thickness.

When the infrared radiation thermometer is used to measure the temperature of the target, it is necessary to measure the infrared radiation of the target in its band range, and then the temperature of the target is calculated by the thermometer. The monochromatic thermometer is proportional to the radiation in the band; The two-color thermometer is proportional to the ratio of radiation in the two bands.

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A dual-polarized antenna was successfully born, which was transformed from the nine-unit aircraft antenna. The oscillator was changed into a double diamond oscillator, and the guide was made into a cross shape, which was used to receive vertical and horizontal signals in the same direction.

An antenna is a converter that converts a traveling wave propagating along a transmission line into an electromagnetic wave propagating in an unbounded medium (usually free space), or vice versa. A part of a radio device used to transmit or receive electromagnetic waves. The ratio of the total input power of the antenna, called the maximum gain factor of the antenna. It is a more comprehensive reflection of the antenna's effective utilization of the total RF power than the antenna directivity factor. In decibels. It can be proved mathematically that the maximum antenna gain coefficient is equal to the product of antenna directivity coefficient and antenna efficiency.

With a simple 5G Dual Band Combiner, the gain is about 2.2dbi. However, the two sets of antennas do not gain a total of 4.4dbi. However, they can or may support dual antenna automatic selection to improve wlan network performance through a special technique.

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Silicone Laryngeal Mask is a kind of material with high elasticity, strength and resilience of rubber, as well as the characteristics of injection molding. TPE material, a kind of thermoplastic elastomer, has been applied in all walks of life due to its comfortable hand feel, large output, environmental protection, convenient processing and moderate price. With the explosion of its application scenarios, many different requirements for Silicone Laryngeal Mask have been put forward.

TPE material is characterized by good elasticity, good hand feel and good anti-skid performance. At the same time, it can be combined with hard adhesive ABS,PP,PC,PA,AS,PE and other hard materials. For example, the toothbrush handle that everyone has in their daily life has a little bit of colored soft glue in it and that's the Silicone Laryngeal Mask. Hospital cart casters are usually silent casters, most are made of TPE, tool handles... Previously, they were made of PVC. Now pay attention to the common tool handles (screws), which are covered with TPE adhesive. For example, some cutting boards and ice bars are all TPE materials. For example, the caster wheels of cars and the cables of electric wires all belong to the Silicone Laryngeal Mask.

"Are Silicone Laryngeal Mask products harmful to the body?

1, TPE material is a kind of rubber products, at the same time because of its safety and non-toxic, no irritation to the human body and is widely used, is often used in the production of toys and models, so it can be safe to use.

2. TPE is an environmentally friendly and non-toxic material that does not produce environmental hormones. Moreover, TPE has the effect of anti-skid and wear-resisting, it is formed with hard plastic coating, and has good adhesion with polypropylene PP main material. The two materials are combined with hard and soft, and the two-color match. PP provides the strength of the cutting board, and TPE provides the anti-skid of the cutting board, while increasing the product aesthetics. Compared with ordinary plastic, TPU design with 3-4 times strength will not cause odor.

3, the most common in life, such as adult products, toothbrush handle soft glue part, is TPE material, health and non-toxic can rest assured.

4. In recent years, Silicone Laryngeal Mask has been increasingly applied in food packaging materials, kitchenware, dinnerware, baby products and other industries. It includes the application of TPE raw materials in the medical industry: suction ball, instrument handle, medical caster, harness, gas mask, all kinds of pipe fittings, bottle stoppers and related medical supplies. So TPE material is completely non-toxic and environmentally friendly!

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ortho benzyl para chlorophenol is important for cognitive function and has a variety of biological functions in cells. Like PE, PS also exists inside the membrane. PS is formed by PE by replacing the ethanolamine head with L-serine, which then enhances the release of acetylcholine and improves cell signaling to correct faulty cognitive activity. PS is essential for apoptosis, the programmed death of cells that occurs as a normal and controlled part of an organism's growth and development. Often creates cells that are not needed later, especially during healing. When apoptosis is required, PS is transferred from the inner membrane to the outer membrane, which sends a signal to the macrophage (our cell cleaning structure) that the cell must go. In addition, polystyrene is a component of platelet membranes and therefore plays a role in the clotting process. The concentration of PS in the cell membrane is usually less than 10% of the total phospholipids in the lobules of the cell membrane (endoplasmic reticulum), with the highest concentration of myelin from brain tissue.

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1) Easy to use

a, according to the needs, design suitable loading and unloading style load, to meet a variety of use occasions;

b, Dummy Load N-Female After the power cable is connected, the device can be used after being powered on.

2) Flexible loading

a. Select the maximum power of a single Dummy Load N-Female as required.

b. On single Dummy Load N-Female, there is a multiway switch for separate power Settings. When in use, can be added or reduced at any time, adjust to any load running state;

c, can easily adjust to three-phase load balance, reduce power loss.

3) Instantaneous power failure and power-on have no adverse effects

Since Dummy Load N-Female is composed of pure resistance, harmonic pollution and reactive power will not be generated.

4) Good heat dissipation function

Dummy Load N-Female has a good heat dissipation design, from the fan to the heat dissipation window, follow the best heat dissipation concept.

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