German FEMTO sensors, FEMTO models, FEMTO prices

FEMTO sensors precisely measure 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 that determines the position has no direct contact with the sensitive element, the sensor can be used in extremely harsh industrial environments and is not easily affected by oil stains, solutions, dust, or other pollutants. 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 the reliability and service life of the detection.

FEMTO sensor classification

1) Potentiometric displacement sensors convert mechanical displacement into resistance or voltage output that has a linear or arbitrary functional relationship. Ordinary linear potentiometers and circular potentiometers can be used as linear displacement and angular displacement sensors, respectively. However, potentiometers designed for the purpose of measuring displacement require a definite relationship between displacement change and resistance change. The movable brush of the potentiometric displacement sensor is connected to the measured object. The displacement of the object causes a resistance change at the moving end of the potentiometer. The amount of resistance change reflects the magnitude of the displacement, while the increase or decrease in resistance indicates the direction of the displacement. Usually, a power supply voltage is applied to the potentiometer to convert the resistance change into a voltage output. Due to the wire-wound potentiometer, the resistance changes in steps based on the turn resistance when the brush moves, so its output characteristic is also stepped. If this type of displacement sensor is used as a displacement feedback element in a servo system, excessive step voltage will cause system oscillation. Therefore, the resistance value per turn should be minimized during the manufacture of the potentiometer. Another major disadvantage of potentiometric sensors is that they are prone to wear. Its advantages are: simple structure, large output signal, easy to use, and low price. 2) Magnetostrictive displacement sensors precisely measure 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 that determines the position has no direct contact with the sensitive element, the sensor can be used in extremely harsh industrial environments and is not easily affected by oil stains, solutions, dust, or other pollutants, with an IP protection rating of IP67 or higher. 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 the reliability and service life of the detection. Magnetostrictive displacement sensors accurately measure position by utilizing the magnetostrictive principle, where two different magnetic fields intersect to generate a strain pulse signal. The measuring element is a waveguide, and the sensitive element inside the waveguide is made of special magnetostrictive material. The measurement process involves generating a current pulse in the electronics housing of the sensor, which transmits through the waveguide, thereby generating a circumferential magnetic field outside the waveguide. When this magnetic field intersects with the magnetic field generated by the movable magnetic ring sleeved on the waveguide (which acts as the position variable), a strain mechanical wave pulse signal is generated inside the waveguide due to the magnetostrictive effect. This strain mechanical wave pulse signal travels at a fixed speed of sound and is quickly detected by the electronics housing. Since the transmission time of this strain mechanical wave pulse signal within the waveguide is proportional to the distance between the movable magnetic ring and the electronics housing, measuring the time allows for highly precise determination of this distance. Since the output signal is a true absolute value, rather than a proportional or amplified signal, there is no signal drift or value change, and no need for regular recalibration. Magnetostrictive displacement sensors are high-precision, long-stroke absolute position measurement displacement sensors manufactured based on the magnetostrictive principle. It adopts a non-contact measurement method. Since the movable magnetic ring used for measurement has no direct contact with the sensor itself, it is not subject to friction or wear, resulting in long service life, strong environmental adaptability, high reliability, good safety, and ease of system automation. Even in harsh industrial environments, it can operate normally. In addition, it can withstand high temperature, high pressure, and strong vibration, and is now widely used in the measurement and control of mechanical displacement.

FEMTO sensor working principle

Magnetostrictive displacement (level) sensors accurately measure position by utilizing the magnetostrictive principle, where two different magnetic fields intersect to generate a strain pulse signal. The measuring element is a waveguide, and the sensitive element inside the waveguide is made of special magnetostrictive material. The measurement process involves generating a current pulse in the electronics housing of the sensor, which transmits through the waveguide, thereby generating a circumferential magnetic field outside the waveguide. When this magnetic field intersects with the magnetic field generated by the movable magnetic ring sleeved on the waveguide (which acts as the position variable), a strain mechanical wave pulse signal is generated inside the waveguide due to the magnetostrictive effect. This strain mechanical wave pulse signal travels at a fixed speed of sound and is quickly detected by the electronics housing. Since the transmission time of this strain mechanical wave pulse signal within the waveguide is proportional to the distance between the movable magnetic ring and the electronics housing, measuring the time allows for highly precise determination of this distance. Since the output signal is a true absolute value, rather than a proportional or amplified signal, there is no signal drift or value change, and no need for regular recalibration.

FEMTO sensor application areas

It can be widely used for liquid level measurement and control of various liquid tanks in industries such as petroleum, chemical, water conservancy, pharmaceuticals, food, and beverages, as well as in aerospace refueling systems, automotive refueling systems, diesel refueling systems, various hydraulic tanks, hydrological monitoring, and water treatment. Magnetostrictive displacement sensors are high-precision, long-stroke absolute position measurement displacement sensors manufactured based on the magnetostrictive principle. It adopts an internal non-contact measurement method. Since the movable magnetic ring used for measurement has no direct contact with the sensor itself, it is not subject to friction or wear, resulting in long service life, strong environmental adaptability, high reliability, good safety, and ease of system automation. Even in harsh industrial environments (such as places prone to oil stains, dust, or other pollution), it can operate normally [01]. In addition, it can withstand high temperature, high pressure, and strong vibration, and is now widely used in the measurement and control of mechanical displacement. Its stroke can reach 3 meters or longer, with a nominal accuracy of 0.05% F·S. For sensors with a stroke of 1 meters or more, the accuracy can reach 0.02% F, S, and repeatability can reach 0.002% F·S. Therefore, it is widely used in industries such as petrochemical, aerospace, electric power, and water conservancy.

Weidou Intelligent Technology specializes in selling German FEMTO sensors, FEMTO proximity sensors, FEMTO distance sensors, FEMTO vision sensors, FEMTO displacement sensors, FEMTO load cells, FEMTO speed sensors, FEMTO photoelectric sensors, FEMTO position sensors, FEMTO angle sensors, FEMTO tactile sensors, FEMTO temperature sensors, FEMTO pressure sensors, FEMTO flow sensors, FEMTO level sensors, FEMTO motion sensors, FEMTO process sensors. Original imports from Germany. Welcome customers to inquire and order.