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Category Archives: Linear Position and Distance Measurement
In Metalworking, the clamping status of tools and workpieces are monitored in many applications. Typically, inductive sensors are used to control this. Three positions are usually detected: Unclamped, clamped with object, and clamped without object. The sensor position is mechanically adjusted to … Continue reading
Continuous measurements on industrial machines or the materials that these machines are making, moving, or processing can be categorized into two main types of sensors: position measurement sensors, and distance measurement sensors. It’s a somewhat subtle distinction, but one that … Continue reading
The standard for hydraulic fluid in the industry is mineral oil, which is a dielectric medium that does not conduct electricity. Yet environmental concerns have led to the search for alternatives that are less harmful in case of leaks and … Continue reading
Hydraulic actuators can be used to open and close a valve’s position. In automation architectures, a linear position sensor is used within the hydraulic actuator to provide continuous position feedback. The linear position sensor is installed into the back end … Continue reading
In linear motion applications, it is often desirable to eliminate the need to make a homing run to re-acquire the reference position for an incremental linear encoder. The homing routine may need to be eliminated to save processing time, or … Continue reading
The classic linear position feedback solution for hydraulic cylinders is the rod-style magnetostrictive sensor installed from the back end of the cylinder. The cylinder rod is gun-drilled to accept the length of the sensor probe, and a target magnet is … Continue reading
Linear encoders – absolute or incremental? Incremental encoders are simple, inexpensive, and easy to implement, but they require that the machine be homed or moved to a reference position. Absolute encoders don’t require homing, but they’re usually more expensive, and … Continue reading