Information about Magnetic Speed Sensors

Magnetic speed sensors use a magnet as the sensing element or sensed target in order to capture rotational or linear speed. Typically, they are used as gear-tooth speed sensors or incorporated into stroboscopes or tachometers. Technology choices magnetic speed sensors include magnetoresistive, inductive, variable reluctance, and Hall Effect. With magnetoresistive sensors, the resistance of the sensing element is a function of the direction and magnitude (proximity) of an applied magnetic field. With inductive sensors, an oscillator circuit generates a radio frequency (RF) electromagnetic field that radiates from a ferrite core and coil assembly. The field is directed at the sensor face. When a metal target enters the field, eddy currents are induced into the surfaces of the target. This causes a reduction in the amplitude of the oscillator circuit (change in inductance).

Products & Services Related to Magnetic Speed Sensors

Linear Position Sensors and Switches, Inductive

Inductive linear position sensors and switches are noncontact devices that determine an object's coordinates (linear or angular) with respect to a reference.

Linear Position Sensors and Switches, Magneto Resistive

Magneto resistive linear position sensors and switches have a linear resistance output signal representing the distance an object is from a reference point.

Linear Position Sensors and Switches, Variable Reluctance

Variable reluctance linear position sensors and switches are noncontact devices that use variable reluctance based technology, and whose output signal represents the distance between an object and a reference point.

Position Sensors, Hall Effect

Hall effect position sensors are noncontact devices that function via an electrical potential (for example, a voltage) that is developed across an axis perpendicular to an applied current flow and the presence of a magnetic field.

Proximity Sensors, Hall Effect

Hall effect proximity sensors are used to detect the proximity, presence or absence of a magnetic object using a critical distance.

Proximity Sensors, Inductive

Inductive proximity sensors detect the presence or absence of an object using a critical distance.

Proximity Sensors, Magnetic

Magnetic proximity sensors include devices that work on inductive, variable reluctance, magneto resistive or Hall effect principles. Proximity sensors detect the presence or absence of an object using a critical distance.