Sensors designed for applications where higher output voltages are needed

Honeywell VRS sensors are now available from RS Components. The high-output VRS sensors are designed for use in applications where higher output voltages are needed. Variable reluctance speed (VRS) magnetic speed sensors are simple, rugged devices that do not require an external voltage source for operation. The general-purpose VRS sensors are designed for use in applications with medium to high speeds or in electrically-noisy environments with relatively small air gaps. Passive front-end sealed versions are available for use where the sensor is exposed to fluids, lubricants or adverse environmental conditions. The fixed magnetic field is established by use of a permanent magnet. As a ferrous metal object approaches and passes near the sensing area the flux lines of the magnetic field change in strength. This change in magnetic field strength induces a current into a coil winding, which is attached to the output terminals.