IR Infrared Beam Alarm, 100m Invisible Beam Sensor, IR Photoelectric Gate Driveway Infrared Sensor, with Barrier Active Detection, Waterproof Digital Pulse

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They work very well in dusty conditions. The brighter light of a laser sensor has fewer issues in dusty environments compared to other styles of sensors. Diffuse sensors (proximity sensor) are easier to install as only one device must be mounted. This is because the transmitter and receiver are contained within one housing. Diffuse sensors use the reflection from the target object within a predetermined sensing range.

The Infrared beam sensor use s near identical infrared technology , but where the transmitter and rece i ver are separated by a distance . W hen a gas passes between the two and is absorbed by the IR light , t he ‘beam is broken’ and the receiver will let you know. Typically, infrared open path detectors have a single gas detection beam 1 0m to 2 00m in length . Advantages of Infrared Beam Sensors Each beam can be set to one of 6 sensitivity states to provide a best fit for individual applications The FGS function prevents objects closer than the set distance or objects that reflect less than a specified amount of light to the Receiver from being detected. Infrared emitters within the sensor generate beams of IR light that are measured by photo-receivers. Hydrocarbon gas molecules absorb light at 3.3 microns, Carbon dioxide molecules at 4.25 microns and other molecules at different wavelengths, so the beam intensity is reduced if there is an appropriate concentration of absorbing gas present. A “reference” beam (around 3.0μm) is not absorbed by gas, so arrives at the receiver at full strength. The %LEL of gas present is determined by the ratio of the absorbed and reference beams measured by photo-receivers. How do IR Beam Sensors Works?The incredibly high resolution achieved with these Sensors derives from advanced design technologies that yielded a very small spot beam and a unique optical system for receiving light. These developments enable detecting very small objects, as well as precise position detection. Loop Sensor ร่วมกับการใช้ เซ็นเซอร์แสงเพื่อเพิ่มความมั่นใจ และลดอุบัติเหตุ ที่อาจจะเกิดขึ้นกับรถที่ผ่านเข้าออกไม้กั้นอยู่เสมอ เนื่องจากการกรีดลูป ฝังพื้นนั้นการทำงานเป็นเพียงในกรอบที่กรีดในจังหวะที่รถผ่านไม้นั้น อาจจะทำให้เกิดการตกของไม้ได้ จึงจำเป็นต้องมีการติดเซ็นเซอร์แสงบริเวณใต้ไม้ โดยเลือกได้ทั้งแบบ กระจกสะท้อน อุปกรณ์สะท้อน หรือ เลเซอร์ แล้วแต่ข้อจำกัดของแต่ละหน้า แต่ไม่แนะนำแบบไม่มีตัวรับสะท้อน เนื่องจากสภาพหน้างานอาจจะทำให้เกิดความผิดพลาดที่ครอบคุมไม่ได้นั้นเอง Receiver (ตัวรับสัญญาณ) : ประกอบด้วย ตัวรับแสงเพื่อแปลงสัญญาณ และส่วนของสวิตซ์ ทำหน้าที่เป็น Output Retro reflective mode คือ ระยะจากเซ็นเซอร์ถึงแผ่นสะท้อน เป็นการเปลี่ยนจากอุปกรณ์รับเป็นการใช้แผ่น หรือกระจกสะท้อนแสงกลับมาที่ตัวส่ง โดยรูปแบบนี้ ตัวส่งจำเป็นต้องเป็นรุ่นที่มีการรับค่าได้ (ไม่สามารถนำตัวส่ง รุ่นที่มีตัวรับมาทำเป็นแบบสะท้อนได้)

The Receiver in the Sensor is either a 2-part photodiode or a position detector. The light reflected from the sensing object is concentrated on the Receiver. Sensing is based on the principle of triangulation, which states that where the beam is concentrated depends on the distance to the sensing object. Powered and controlled via the loop, the beam is a market leading device with features such as one man alignment and commissioning which is achieved using the auto gain setting, this ensure the optimum alignment is reached. Emitter หรือ Transmitter (ตัวส่งสัญญาณ) : จะประกอบด้วย ตัวกำเนิดแสง,หลอด LED และตัวสร้างสัญญาณมอดูเลสที่อัตราเร็วสูง ส่งเป็นแสงไปยังตัวรับสัญญาณ โดยอาจจะเปลี่ยนตัวกำเนิดแสงไปตามชนิดของอุปกรณ์ Monitoring wider spaces using light grids rather than a single beam. Multiple sensors can be arranged to cover a bigger area with parallel light beams, scanning a two-dimensional zone for the presence or absence of objects or bodies Through Beam Sensors (aka thru-beam) rely on two separate housings, one for the transmitter and one for the receiver, with the transmitter providing a continuous beam of light to the receiver. Each time an object passes through the beam this interrupts the signal between the transmitter and receiver, which in turn causes the receiver to send an electrical signal to the output. Through-beam sensors are suited to long-distance sensing and can detect almost any object, irrespective of colour or angular motion.

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The detecting range of a photoelectric sensor is its "field of view", or the maximum distance from which the sensor can retrieve information, minus the minimum distance. A minimum detectable object is the smallest object the sensor can detect. More accurate sensors can often have minimum detectable objects of minuscule size. Maintenance of the beam is enhanced with a key operated test feature which simulates the obscuration of the beam in a fire. If it is very foggy, that counts as a beam interruption and gas cannot be detected until the fog clears All photoelectric sensors rely on the ability to detect what happens to a beam of light they project from a transmitting module

The rate at which an object reflects or absorbs light depends on both the wavelength of the emitted light and the color of the object. This property can be used to detect colors. Reflected light may return to the Receiver momentarily for item (3) due to sensing object movement. In that case, an OFF delay timer or some other means may need to be employed to prevent chattering. Many such instruments are used at relatively close range, for example on production lines. However, some models can be used to determine accurate positioning and measurement over much longer distances than many other sensor types. Many of the most common photoelectric sensor applications are found in industrial or manufacturing environments. This means that the individual components often need to be robust and consistently reliable, which is why they are typically built to withstand harsh environments.

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When using the E3Z-LS61, E3Z-LS66, E3Z-LS81, or E3Z-LS86, select the BGS or FGS function to detect objects on a conveyor belt.

Easier to install and adjust, since only one end of the device requires wiring in - the reflector typically requires no powerThe optical lens design is intended to minimise build-up of dust to reduce the maintenance and cleaning required The response time is extremely fast because light travels at high speed and the Sensor performs no mechanical operations because all circuits are comprised of electronic components.