SFH 7070 Sensors, Transducers

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Optical sensors are commonly used in automation, sensing, and measurement applications. This type of device uses optics to detect infrared (IR) light or changes in illumination, allowing it to measure distance, object presence, and speed, and detect objects in automated processes. The SFH 7070 is a reflective optical sensor designed for use in these applications. The device is a self-contained, all-in-one sensor with integrated optics, a built-in signal conditioner, and an analogue output.

The SFH 7070 is a two-part device with a sensing head and a control unit, which are connected by a cable. The sensing head is equipped with an optics package that consists of two sensors and a series of lenses and filters, as well as a built-in emitter. The emitter is used to transmit an infrared beam at the surface of the object that is being sensed. The two sensors detect any reflected infrared light that is bounced back from the object.

The control unit of the SFH 7070 acts as a signal conditioner, performing a series of functions such as ambient light suppression and signal amplification. It also contains a voltage regulator and temperature compensation circuitry, allowing the sensor to operate in temperatures of up to 95°C. Additionally, the control unit contains a digital display which shows the current output voltage from the device and can be used for debugging and troubleshooting.

The SFH 7070 is an analog sensor, and the output from the device is an analog signal in the form of a voltage. This voltage is proportional to the amount of reflected light that is detected by the optical front-end, with a higher voltage indicating a larger reflection. The output of the SFH 7070 can be used in a variety of applications to measure distance, presence, and speed. For example, it can be used to turn on a light when an object is detected in a production line, or to measure the speed of a vehicle in a traffic monitoring system.

Overall, the SFH 7070 is a self-contained, all-in-one, reflective optical sensor with integrated optics, a signal conditioner, and an analog output. It is designed to work in temperature extremes and is capable of detecting changes in reflection from objects. This makes it an ideal choice for automation, sensing, and measurement applications requiring an analog output.

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