EL3-N2475

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Optical Sensors – Photoelectric, IndustrialOptical sensors are often divided into two broad categories of photoelectric and industrial, both of which are used to detect objects, their movements, and certain features from further away. The EL3-N2475, a frequency modulated continuous wave (FMCW) remote sensing laser radar, is an example of an industrial optical sensor. It is used to measure a variety of properties that are indicative of a target’s changes in position or distance. Some examples include measuring water level and depth, ground and surface velocities, wave height, ship stability, and coastline erosion.The EL3-N2475 is a clear-looking device that emits a continuous laser beam via a main transmitter and then simultaneously receives and measures the reflected light with a second receiver. The main transmitter is set up in such a way that the emitted laser beam has a certain phase at 0 km and a different known phase at 24.75 km. All targets that are located between 0 km and 24.75 km will then cause the main transmitter to modulate the FMCW laser beam\'s phase. The receiver will undergo sweeping frequency changes that are a result of the emitted, alternating frequencies and wavelengths from the transmitter’s main laser beam. When these sweeping frequency changes encounter a target, some of the incident radiation will be reflected back in the same phase as the main beam, encountering a phase shift as it travels towards the receiver. Depending on the strength and characteristics of the laser beam, as well as the range, bearing, and elevation of the target, the phase shift can be measured immediately.The EL3-N2475’s microprocessors and signal processing systems, meanwhile, are the means by which all of this data is interpreted. The microprocessors and signal processing systems take the raw data of the returned frequencies from the receiver and process them to determine the position, bearing, elevation, and strength of the target. This data is then sent to the receiver display, which records it as an image (e.g. a scatteragonal plot). Because the EL3-N2475 is a laser-based system, it is largely unaffected by the level of illumination of the environment. It can even function in water or in smoke and other obscurations that are completely opaque to traditional optical methods. In addition, the EL3-N2475 is capable of determining the bearing, elevation, and position of a target with a higher level of accuracy than other methods, making it a more precise tool for measuring a variety of elements. The EL3-N2475, an industrial optical sensor, is an important tool for measuring a variety of elements such as water levels, ground and surface velocities, wave heights, ship stability, and coastline erosion. By using a continuous laser beam and a variety of microprocessors and signal processing systems, it is able to detect the bearing, elevation, position, and strength of various targets with greater accuracy than a variety of other methods. As such, it is a viable tool for many different industries that need to accurately measure elements and distances.

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