German GESA THERMOMETERS SL sensor GESA THERMOMETERS SL model GESA THERMOMETERS SL price

GESA THERMOMETERS SL sensor precisely measures the actual displacement value 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 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 high-temperature, high-pressure, and high-vibration environments. 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, even with continuous repeated detection, it will not cause any wear to the sensor, which can greatly improve detection reliability and service life.

GESA THERMOMETERS SL sensor principle

Photoelectric sensors achieve control by converting changes in light intensity into changes in electrical signals. Generally, a photoelectric sensor consists of three parts: transmitter, receiver, and detection circuit. The transmitter emits a light beam toward the target; the emitted light beam generally comes from semiconductor light sources, such as light-emitting diodes (LED), laser diodes, and infrared emitting diodes. The light beam is emitted continuously, or the pulse width is changed. The receiver consists of photodiodes, phototransistors, and photocells. Optical components such as lenses and apertures are installed in front of the receiver. Behind it is the detection circuit, which filters out valid signals and applies them. In addition, structural components of photoelectric switches also include emitter plates and optical fibers.

GESA THERMOMETERS SL sensor classification

1) Slot-type photoelectric sensor: A slot-type photoelectric switch is formed by mounting a light emitter and a receiver face-to-face on both sides of a slot. The emitter can emit infrared or visible light, and the light receiver can receive the light when unobstructed. However, when the detected object passes through the slot, the light is blocked, the photoelectric switch acts, outputs a switching control signal, cuts off or connects the load current, thereby completing one control action. The detection distance of slot switches is generally only a few centimeters due to limitations of the overall structure. 2) Through-beam photoelectric sensor: If the emitter and receiver are separated, the detection distance can be increased. An emitter and a receiver form a through-beam separated photoelectric switch, referred to as a through-beam photoelectric switch. The detection distance of through-beam photoelectric switches can reach several meters or even tens of meters. When using a through-beam photoelectric switch, install the emitter and receiver on both sides of the path through which the detected object passes. When the detected object passes and blocks the light path, the receiver acts and outputs a switching control signal. 3) Reflector-type photoelectric switch: The emitter and receiver are housed in the same unit, with a reflector plate installed in front. It utilizes the reflection principle to perform photoelectric control, known as a retro-reflective (or mirror-reflective) photoelectric switch. Under normal conditions, the light source emitted by the emitter is reflected back by the reflector plate and received by the receiver; once the detected object blocks the light path and the receiver does not receive light, the photoelectric switch acts and outputs a switching control signal. 4) Diffuse-reflective photoelectric switch: The detection head of a diffuse-reflective photoelectric switch also contains an emitter and a receiver, but there is no reflector plate in front. Under normal conditions, the receiver cannot detect the light emitted by the emitter. During detection, when the detected object passes, it blocks the light and reflects part of it back; the receiver then receives the light signal and outputs a switching signal.

GESA THERMOMETERS SL sensor application cases

1) Photoelectric sensors applied to laser weapons: Since photoelectric sensors are particularly sensitive to infrared radiation, visible light, or both, they are more likely to become targets of laser attacks. In addition, electronic systems and the sensors themselves are highly susceptible to interference from thermal noise and electromagnetic noise generated by lasers, preventing normal operation. Methods of laser weapon attacks on photoelectric sensors on the battlefield mainly include the following: using a laser beam of appropriate energy to "blind" the sensor, making it unable to detect or continue tracking already detected targets. Or, if the sensor is guiding a weapon toward a target, blinding will cause it to lose the target. In summary, since sensors play an increasingly important role on the battlefield and are vulnerable to laser attacks, they have become the preferred target of low-energy laser weapons. 2) Photoelectric sensors applied to automatic meter reading systems: With the development of microelectronics, sensor technology, computer technology, and modern communication technology, photoelectric sensors can be used to develop automatic meter reading systems. The aluminum disk of the electricity meter rotates driven by torque generated under the action of eddy currents and magnetic fields. Using a photoelectric sensor converts the number of rotations of the aluminum disk into pulse counts. For example: partially blackening a rotating shiny aluminum disk, paired with a reflective photoelectric emitter-receiver pair, generates pulses at the blackened areas as the disk rotates. The number of rotations of the aluminum disk is sampled and converted into corresponding pulse counts, and sent via an optocoupler isolation circuit to the T0 port of the CPU for counting processing. Using optocoupler isolators effectively prevents interference signals from entering the microcomputer. Combined with other transmission methods, an automatic meter reading system can be formed. 3) Photoelectric sensors applied to monitoring smoke and dust pollution: A photoelectric sensor is a small electronic device that can detect changes in received light intensity, achieving control functions by converting changes in light intensity into changes in electrical signals. Due to characteristics such as non-contact operation, fast response, and reliable performance, photoelectric sensors are widely used in industrial automation devices and robots. We can utilize the characteristics of photoelectric sensors to detect smoke and dust conditions, so the strength of the photoelectric sensor output signal reflects changes in flue gas turbidity. 4) Hygienic washdown-proof photoelectric sensors: Washdown-proof sensors provide extremely high reliability and comfort while minimizing operating costs. Equipped with IO-Link interfaces and the proTect+ sealing concept that significantly extends service life, these two new sensors are suitable for demanding application environments and are ideal solutions for the food and beverage industry.

Weidou Intelligent Technology specializes in selling German GESA THERMOMETERS SL sensors, GESA THERMOMETERS SL proximity sensors, GESA THERMOMETERS SL distance sensors, GESA THERMOMETERS SL vision sensors, GESA THERMOMETERS SL displacement sensors, GESA THERMOMETERS SL load cells, GESA THERMOMETERS SL speed sensors, GESA THERMOMETERS SL photoelectric sensors, GESA THERMOMETERS SL position sensors, GESA THERMOMETERS SL angle sensors, GESA THERMOMETERS SL tactile sensors, GESA THERMOMETERS SL temperature sensors, GESA THERMOMETERS SL pressure sensors, GESA THERMOMETERS SL flow sensors, GESA THERMOMETERS SL level sensors, GESA THERMOMETERS SL motion sensors, GESA THERMOMETERS SL process sensors, original German imports. Welcome inquiries and orders from users.