Brand Overview

ASM, a German company, focuses on the research and production of physical quantity sensors such as displacement and angle. Its products cover industrial automation, mechanical manufacturing, transportation and other fields, providing stable signal acquisition solutions for equipment status monitoring and precise control. Its sensors are designed with reliability and adaptability as the core.

Core technical features

（1） Principle of Multivariate Measurement and Accuracy Control

ASM sensors cover multiple measurement principles and can meet the needs of different scenarios:

Magnetostriction principle: Suitable for linear displacement sensors, strain pulses are generated through magnetic coupling between magnetic floats and waveguide wires to achieve non-contact measurement. The measurement accuracy can reach ± 0.01% of the full range, with a resolution as low as 0.1 μ m and no mechanical wear. It is suitable for scenarios that require long-term stable measurement (such as hydraulic cylinder stroke monitoring).

Incremental/Absolute Optoelectronic Principle: Used for angle sensors, it outputs angle position information through signal conversion between optical encoder and photoelectric components. The absolute model supports position memory after power failure, without the need for zeroing operation. The angle accuracy can reach ± 0.1 ° and is suitable for angle monitoring of rotating axes (such as machine tool spindles and robot joints).

Potentiometer principle: For low-cost, medium to small precision demand scenarios, conductive plastic or metal film materials are used as resistance elements, with linearity error controlled within ± 0.5%, simple structure and fast response speed, suitable for displacement detection of light load machinery.

Regardless of the principle used, ASM sensors optimize their output signals through signal amplification and filtering modules, reducing the impact of electromagnetic interference on data and ensuring data stability even in complex industrial environments.

（2） Structural design and environmental adaptability

Protection and Durable Design: Sensor housings are often made of stainless steel or high-strength engineering plastics (such as PBT), with a protection level generally reaching IP65/IP67. Some models support IP69K (high-pressure spray protection) and can withstand environments such as dust, moisture, and high-pressure flushing; The terminal adopts sealed plugs or cables to prevent water vapor and impurities from entering the internal circuit, and is suitable for special scenarios such as outdoor and food processing.

Installation flexibility: Supports multiple installation methods, such as flange installation, buckle installation, threaded installation, etc. Linear sensors can adapt to different strokes (ranging from 25mm to 6000mm), angle sensors support 360 ° full range or customized angle range, and can flexibly adjust the installation position according to the device structure, reducing integration difficulty.

Ability to withstand harsh working conditions: Some models have a wide temperature range (-40 ℃~+120 ℃) and can withstand high and low temperature environments; The vibration level meets the IEC 60068-2-6 standard (10-2000Hz, 50m/s ²), and the impact level meets the IEC 60068-2-27 standard (500m/s ², 11ms), suitable for high-frequency vibration scenarios such as mining machinery and construction machinery.

（3） Signal output and system compatibility

ASM sensors support multiple standard signal outputs, including analog signals (4-20mA, 0-10V), digital signals (RS485, SSI, CANopen, Profinet), etc. They can be directly integrated with control systems such as PLC, DCS, and industrial computers without the need for additional signal conversion modules; Some models support custom signal parameters (such as output range and filtering frequency), which can be configured through dedicated software to improve compatibility with different automation systems and reduce debugging time.

Main product types and technical details

Typical application scenarios

（1） Industrial automation field

Machine tool manufacturing: Linear sensors are used for monitoring the displacement of tool holders in CNC lathes and milling machines, while angle sensors are used for spindle angle positioning to ensure machining dimensional accuracy and adapt to processes such as metal cutting and mold processing;

Robot technology: Angle sensors are installed on the joints of robots to provide real-time feedback on joint rotation angles. They work together with control systems to achieve precise movements and are suitable for robot applications such as assembly, handling, and welding.

（2） Engineering machinery field

Hydraulic equipment: Linear sensors (such as magnetostrictive type) are embedded in hydraulic cylinders to monitor the stroke of piston rods, control the movement of boom and arm of construction machinery (such as excavators and loaders), and ensure operational accuracy;

Commercial vehicles: Angle sensors are used for the truck cab flipping mechanism and trailer leg height adjustment, providing real-time feedback on position information to ensure operational safety.

（3） Medical and precision instrument fields

Medical equipment: Micro displacement sensors are used for monitoring the displacement of end effectors in surgical robots, or for locating moving parts in CT and MRI equipment, meeting the high-precision and miniaturization requirements of medical scenarios;

Testing instruments: Angle sensors are used for adjusting the fixture angle of material testing machines, and linear sensors are used for controlling the lens displacement of optical instruments to ensure accurate testing data.

（4） Food and packaging industry

Packaging Machinery: Linear sensors are used for monitoring the displacement of film tension adjustment rollers in packaging machines, angle sensors are used for controlling the angle of conveyor belt steering mechanisms, and are suitable for automated packaging lines for food and daily necessities;

Filling equipment: Linear sensors monitor the lifting stroke of the filling valve, control the filling volume, ensure precise dosage, and comply with food hygiene standards (sensor protection level reaches IP69K, supports high-temperature cleaning).

（5） Energy and Transportation Sector

Wind power equipment: Angle sensors are used for blade pitch angle control of wind turbines, and linear sensors are used for displacement monitoring of tower yaw systems to ensure stable operation of wind power equipment;

Rail transit: Angle sensors are used for angle monitoring of train door opening and closing mechanisms, while linear sensors are used for detecting brake shoe clearances in braking systems to enhance train operation safety.