Ultra-high frequency induction heating equipment is a kind of equipment developed for surface quenching by applying electromagnetic induction principle and modern power electronic technology. Surface heat treatment process in which the workpiece is heated locally by an induced current. This heat treatment process is often used for surface quenching, but can also be used for local annealing or tempering, and sometimes for bulk quenching and tempering. UHF,UHF Heater,Ultra High Frequency,UHF Heating Equipment Ningbo Yufeng Electronics Co., Ltd , https://www.yufengheating.com
Uhf induction heating equipment adopts IGBT efficacy, soft switching resonant dual control and frequency automatic tracking system, MOSFET devices and unique frequency conversion technology, high frequency operation is stable. Uhf INDUCTION heating equipment with constant current and power control function, greatly optimize the metal heating process. Under the same conditions, it has 50% energy saving compared with the traditional high cycle electron tube heating equipment, no high cycle radiation, no high cycle drying. Reduced power load and power capacity, with 100% full load design, UHF induction heating equipment can work continuously for 24 hours without interruption. With automatic heating, insulation, cooling three periods of function Settings, is conducive to improve the heating quality of UHF induction heating equipment, simplified manual operation. Uhf induction heating equipment can be selected according to the power and frequency. The higher the high frequency, the shallower the heating depth, and the lower the high frequency, the better the diathermy. Induction heater 1 ~ 20KHZ high frequency automatic tracking.
UHF heating equipment has the advantages of high frequency, small size, light weight, energy saving, solid and beautiful solder joints, almost unlimited welding part shape, surface pattern will not be damaged, the metal internal crystal structure unchanged, small annealing range and so on. , no obvious welding scar, widely used in metal glass manufacturing, electrical and electronic industry connector welding, small relay internal non-contact welding, refrigeration industry high pressure welding, jewelry industry parts welding, manufacturing metal jewelry and process welding.
When we purchase surveillance cameras, we know that the purchase monitoring is related to the number of millimeters of the lens, depending on the needs. There are more 6 mm 4 mm lenses for normal use.
Many unprofessional installation companies buy a camera and only buy two lenses, a 4 mm and a 6 mm. If you take these two lenses for replacement, which one is better, which kind of lens is used. No problem, but it seems to be particularly unprofessional.
Let's take a look at the relationship between the camera lens millimeter and the illumination range:
From these reference technology pictures, we can see that the smaller the millimeter of the camera lens, the larger the angle of the monitor image, but the closer the sharpest distance is; on the contrary, the larger the millimeter of the camera lens, the more the monitor The smaller the angle of the picture, the farther the clearest distance is.
Below we list some of the commonly used places to choose the camera how to choose the number of millimeters of the lens?
In indoor environments such as small shops and homes, 4mm lenses are recommended, mainly considering that the indoor distance is not too far (3-6 meters), and the angle of monitoring is large enough. Looking at the cell unit door, we generally choose a 6mm lens so that you can see the unit door and the entrance and exit of the unit door. On the outdoor road, Hu equivalent scene, you can choose 6mm or 8mm camera (the ideal monitoring distance is 10-20 meters), with corridor mode to make the picture more perfect.