BAUKMER switch German BAUKMER model BAUKMER price

BAUKMER switch, which precisely detects the absolute position of a movable magnetic ring through internal non-contact measurement and control technology to measure the actual displacement value of the detected product; the high precision and high reliability of this switch have been widely applied in thousands of practical cases. Since the movable magnetic ring that determines the position and the sensitive element do not come into direct contact, the switch can be used in extremely harsh industrial environments and is not easily affected by oil stains, solutions, dust or other pollutants. In addition, the switch 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 switch 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 switch, which can greatly improve the reliability and service life of the detection.

BAUKMER switch classification

1) Potentiometric displacement switch, converting mechanical displacement into resistance or voltage output that has a linear or arbitrary functional relationship with it. Ordinary linear potentiometers and circular potentiometers can be used as linear displacement and angular displacement switches, 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 switch 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's resistance changing in steps of turn resistance when the brush moves, its output characteristic is also stepped. If this type of displacement switch 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 switches is that they are prone to wear. Its advantages are: simple structure, large output signal, ease of use, and low price. 2) Magnetostrictive displacement switch precisely detects the absolute position of a movable magnetic ring through non-contact measurement and control technology to measure the actual displacement value of the detected product; the high precision and high reliability of this switch have been widely applied in thousands of practical cases. Since the movable magnetic ring that determines the position and the sensitive element do not come into direct contact, the switch 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 switch 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 switch 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 switch, which can greatly improve the reliability and service life of the detection. The magnetostrictive displacement switch accurately measures position by utilizing the magnetostrictive principle, generating a strain pulse signal through the intersection of two different magnetic fields. 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 switch, 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 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 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 regular recalibration is required. The magnetostrictive displacement switch is a high-precision, long-stroke absolute position measurement displacement switch manufactured based on the magnetostrictive principle. It adopts a non-contact measurement method; since the movable magnetic ring used for measurement and the switch 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 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.

BAUKMER switch working principle

The magnetostrictive displacement (level) switch accurately measures position by utilizing the magnetostrictive principle, generating a strain pulse signal through the intersection of two different magnetic fields. 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 switch, 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 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 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 regular recalibration is required.

BAUKMER switch application areas

It can be 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 switch is a high-precision, long-stroke absolute position measurement displacement switch manufactured based on the magnetostrictive principle. It adopts an internal non-contact measurement method; since the movable magnetic ring used for measurement and the switch 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 ease of system automation. Even in harsh industrial environments (such as those 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, and for strokes over 1 meters, the accuracy can reach 0.02% F, S, with repeatability up to 0.002% F·S, therefore it is widely used in petrochemical, aerospace, electric power, water conservancy and other industries.

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