German RLS sensor RLS model RLS price

RLS sensor precisely measures the actual displacement of the detected product by detecting the absolute position of the movable magnetic ring through internal non-contact measurement and control technology; the high precision and high reliability of this sensor have been widely applied in thousands of practical cases. Since the movable magnetic ring used for position determination and the sensitive element do not come into direct contact, the sensor can be used in extremely harsh industrial environments and is not easily affected by oil stains, solutions, dust, or other contaminants. In addition, the sensor uses high-tech materials and advanced electronic processing technology, so it can be used in environments with high temperature, high pressure, and high oscillation. The sensor output signal is an absolute displacement value; even if the power is interrupted and reconnected, data will not be lost, and there is no need to re-zero. Since the sensitive element is non-contact, repeated detection will not cause any wear to the sensor, which can greatly improve detection reliability and service life.

RLS sensor principle

Optical measurement and control systems are diverse, manufactured based on different principles of luminous flux acting on photoelectric elements. According to the nature of the output quantity of the photoelectric element (optical measurement and control system), they can be divided into two categories: analog photoelectric sensors and pulse (switching) photoelectric sensors. Analog photoelectric sensors convert the measured quantity into a continuously changing photocurrent, which has a single-valued relationship with the measured quantity. Analog photoelectric sensors can be divided into three major categories based on the method of measuring the target object: transmission (absorption) type, diffuse reflection type, and light-blocking (beam obstruction) type. The so-called transmission type refers to placing the measured object in the optical path, where the light energy emitted by a constant light source passes through the measured object, and after partial absorption, the transmitted light is projected onto the photoelectric element; the so-called diffuse reflection type refers to the light emitted by a constant light source being projected onto the measured object, and then reflected from the surface of the measured object onto the photoelectric element; the so-called light-blocking type refers to when the luminous flux emitted by the light source is partially blocked by the measured object, causing the luminous flux projected onto the photoelectric element to change, with the degree of change related to the position of the measured object in the optical path.

RLS sensor features

1) Long detection distance: If a detection distance of more than 10m is maintained in the through-beam type, it can achieve long-distance detection that other detection methods (magnetic, ultrasonic, etc.) cannot. 2) Few restrictions on detected objects: Since the detection principle is based on light blocking and reflection caused by the detected object, unlike proximity sensors that limit detected objects to metals, it can detect almost all objects such as glass, plastic, wood, liquids, etc. 3) Short response time: Light itself is high-speed, and the sensor circuit consists of electronic components, so it does not include mechanical operating time, resulting in a very short response time. 4) High resolution: High resolution can be achieved by concentrating the projected light beam into a small spot through advanced design technology, or by constructing a special light-receiving optical system. It can also perform detection of tiny objects and high-precision position detection. 5) Non-contact detection is achievable: Detection can be performed without mechanical contact with the detected object, so neither the detected object nor the sensor will be damaged. Therefore, the sensor can be used for a long time. 6) Color discrimination is achievable: The reflectance and absorptance of light formed by the detected object vary depending on the wavelength of the projected light and the color combination of the detected object. Utilizing this property, the color of the detected object can be detected. 7) Easy to adjust: In types that project visible light, the projected light beam is visible to the eye, facilitating adjustment of the position of the detected object.

RLS sensor applications

Photoelectric sensors using photoelectric elements as sensitive elements are diverse and widely used. According to the nature of the output quantity of the photoelectric sensor, they can be divided into two categories: (1) Photoelectric measuring instruments that convert the measured quantity into a continuously changing photocurrent can be used to measure physical quantities such as light intensity, object temperature, light transmission capability, displacement, and surface status. For example: illuminance meters for measuring light intensity, photoelectric pyrometers, photoelectric colorimeters and turbidimeters, photoelectric alarms for fire prevention, and automatic detection devices and instruments for checking the diameter, length, ellipticity, and surface roughness of processed parts, all of which use photoelectric elements as sensitive elements. Semiconductor photoelectric elements are not only widely used in the civil industrial field but also hold an important position in military applications. For example, lead sulfide photoresistors can be made into infrared night vision devices, infrared cameras, and infrared navigation systems; (2) Converting the measured quantity into a continuously changing photocurrent. Various photoelectric automatic devices are made using the characteristic of photoelectric elements to output "present" or "absent" electrical signals when exposed to light or no light. Photoelectric elements are used as switching photoelectric conversion elements. For example, photoelectric input devices for electronic computers, switching temperature regulation devices, and digital photoelectric tachometers for speed measurement.

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