SH-21E

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The SH-21E is a type of optical sensor commonly used in industrial applications. It is a photoelectric sensor that can detect and measure changes in light intensity. The SH-21E is composed of four elements: an input power supply, a light source, a light receiver, and a signal output. The power supply provides energy to the system, while the light source and receiver work together to measure changes in light intensity.

The light source of the SH-21E emits a beam of light, typically infrared, modulated at a specific frequency. This beam is aimed at a light receiver; when the beam is present, the receiver produces an output signal. The output signal depends on the intensity of the beam, with higher intensity resulting in a stronger signal. The output signal is sent to an amplifier, where it can be further processed and analyzed.

The SH-21E can be used to measure a variety of parameters, such as water levels in tanks, position of parts in an assembly line, or speed of a conveyor belt. It is also commonly used in the automotive industry to detect the position of engine parts. In each case, the sensor is typically connected to an output device, such as a display or an alarm, which then actuates when the predetermined limit is reached. For example, an SH-21E sensor installed in an engine can be connected to an output device that will tell the driver when the engine temperature is too high.

The design of the SH-21E makes it easy to install and maintain. It is designed to operate in harsh environments, such as foundries, and its robust construction allows it to withstand temperatures ranging from -20°C to +80°C. In addition to its low power and high reliability, the SH-21E features a broad operating temperature range, high sensitivity, and a small size. This makes it ideal for industrial and automotive applications requiring precision measurements.

The technology used in the SH-21E is similar to other photoelectric sensors found in industrial applications. However, the SH-21E is unique in its ability to measure a wide range of light intensities, making it ideal for applications that need a high degree of accuracy. Additionally, the SH-21E can be used in a variety of industrial settings for a wide range of applications.

In summary, the SH-21E is a versatile and reliable optical sensor used in industrial applications. Its design is simple and easy to install and maintain, and its ability to accurately measure changes in light intensity make it ideal for a variety of industrial settings. The rugged construction and low power consumption also make it ideal for harsh environments.

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