German E+H sensor E+H model E+H price

E+H sensor is a device capable of sensing the proximity of objects. It utilizes the sensitivity of a displacement sensor to approaching objects to detect proximity and output corresponding switching signals; therefore, proximity sensors are also commonly referred to as proximity switches. It is a general term for sensors designed to replace contact-based detection methods such as switches, with the aim of non-contact detection of the target object. It can detect the movement and presence information of the object and convert it into electrical signals.

E+H sensor classification

1) Potentiometric displacement sensor, converting mechanical displacement into resistance or voltage output that has a linear or arbitrary functional relationship with it. Standard linear potentiometers and rotary potentiometers can be used as linear displacement and angular displacement sensors, respectively. However, potentiometers designed for displacement measurement require a definite relationship between displacement change and resistance change. The movable wiper 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 magnitude of the resistance change reflects the magnitude of the displacement, while the increase or decrease in resistance indicates the direction of displacement. Typically, a supply voltage is applied across the potentiometer to convert the resistance change into a voltage output. In wire-wound potentiometers, the resistance changes in steps based on the turn-to-turn resistance as the wiper moves, resulting in a stepped output characteristic. If such a displacement sensor is used as a displacement feedback element in a servo system, excessive step voltages may cause system oscillation. Therefore, the resistance per turn should be minimized during potentiometer manufacturing. Another major disadvantage of potentiometric sensors is susceptibility to wear. Its advantages include: simple structure, large output signal, ease of use, and low cost. 2) Magnetostrictive displacement sensor precisely detects the absolute position of a moving magnetic ring using non-contact measurement technology to measure the actual displacement value of the detected product; the high precision and high reliability of this sensor have been widely applied in thousands of practical cases. Since the moving magnetic ring that determines the position 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. The IP protection rating is above IP67. Furthermore, the sensor uses advanced materials and electronic processing technologies, allowing it to operate in high-temperature, high-pressure, and high-vibration environments. The sensor output signal is an absolute displacement value; even if power is interrupted and reconnected, data is not lost, and re-zeroing is not required. Since the sensitive element is non-contact, repeated detection does not cause any wear to the sensor, significantly improving detection reliability and service life. The magnetostrictive displacement sensor accurately measures position by utilizing the magnetostrictive principle, where the intersection of two different magnetic fields generates 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 sensor's electronics chamber, which travels through the waveguide, creating a circular magnetic field around the waveguide. When this magnetic field intersects with the magnetic field generated by the moving magnetic ring sleeved on the waveguide (which changes with position), a strain mechanical wave pulse signal is generated within 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 chamber. Since the transmission time of this strain mechanical wave pulse signal within the waveguide is proportional to the distance between the moving magnetic ring and the electronics chamber, measuring the time allows for highly precise determination of this distance. Because the output signal is a true absolute value, rather than a proportional or amplified signal, there is no signal drift or value variation, and periodic recalibration is not required. The magnetostrictive displacement sensor is a high-precision, long-stroke absolute position measurement displacement sensor manufactured based on the magnetostrictive principle. It adopts a non-contact measurement method; since the moving magnetic ring used for measurement and the sensor itself do not come into direct contact, they are not subject to friction or wear, resulting in long service life, strong environmental adaptability, high reliability, good safety, and convenience for system automation. It can operate normally even in harsh industrial environments. Additionally, it can withstand high temperatures, high pressures, and strong vibrations, and is now widely used in the measurement and control of mechanical displacement.

E+H sensor working principle

The magnetostrictive displacement (level) sensor accurately measures position by utilizing the magnetostrictive principle, where the intersection of two different magnetic fields generates 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 sensor's electronics chamber, which travels through the waveguide, creating a circular magnetic field around the waveguide. When this magnetic field intersects with the magnetic field generated by the moving magnetic ring sleeved on the waveguide (which changes with position), a strain mechanical wave pulse signal is generated within 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 chamber. Since the transmission time of this strain mechanical wave pulse signal within the waveguide is proportional to the distance between the moving magnetic ring and the electronics chamber, measuring the time allows for highly precise determination of this distance. Because the output signal is a true absolute value, rather than a proportional or amplified signal, there is no signal drift or value variation, and periodic recalibration is not required.

E+H sensor application fields

It is widely used for level measurement and control of various liquid tanks in industries such as petroleum, chemical, water conservancy, pharmaceutical, food, and beverage, as well as in aerospace refueling systems, automotive refueling systems, diesel refueling systems, various hydraulic tanks, hydrological monitoring, and water treatment. The magnetostrictive displacement sensor is a high-precision, long-stroke absolute position measurement displacement sensor manufactured based on the magnetostrictive principle. It adopts an internal non-contact measurement method; since the moving magnetic ring used for measurement and the sensor itself do not come into direct contact, they are not subject to friction or wear, resulting in long service life, strong environmental adaptability, high reliability, good safety, and convenience for system automation. It can operate normally even in harsh industrial environments (such as those prone to oil stains, dust, or other contamination) [01]. Additionally, it can withstand high temperatures, high pressures, and strong vibrations, 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 E+H sensors, E+H proximity sensors, E+H distance sensors, E+H vision sensors, E+H displacement sensors, E+H torque sensors, E+H speed sensors, E+H photoelectric sensors, E+H position sensors, E+H angle sensors, E+H tactile sensors, E+H temperature sensors, E+H pressure sensors, E+H flow sensors, E+H level sensors, E+H motion sensors, E+H process sensors. Original German imports. Welcome customers to inquire and order.