Technical Data Sheet (247.82KB) EN See all Technical Docs

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Product Overview

The 3090A is a hazardous location Variable Reluctance Speed Sensor designed for use in locations where explosion-proof or intrinsically safe sensors are required. Passive VRS (Variable Reluctance Speed) magnetic speed sensor is simple, rugged devices that do not require an external voltage source for operation. A permanent magnet in the sensor establishes a fixed magnetic field. The approach and passing of a ferrous metal target near the sensor pole piece (sensing area) changes the flux of the magnetic field and dynamically changing its strength. This change in magnetic field strength induces a current into a coil winding which is attached to the output terminals. The output signal of a VRS sensor is an AC voltage that varies in amplitude and wave frequency as the speed of the monitored device changes and is usually expressed in peak to peak voltage (Vp-p).
  • Self-powered operation
  • Direct conversion of actuator speed to output frequency
  • Simple installation
  • No moving parts
  • Designed for use over a wide range of speeds
  • Adaptable to a wide variety of configurations
  • 3/4, 5/8 Housing diameters
  • Stainless steel threaded housing material/style
  • MS3106 connector, preleaded terminations
  • 30 to 60Vp-p Output voltage


Product Information

Supply Voltage DC Min:
Supply Voltage DC Max:
Sensor Housing:
No. of Pins:
Output Current:
Operating Magnetic Force Max:
Product Range:
Hazardous Location
To Be Advised

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Legislation and Environmental

Product Traceability
RoHS Compliant:

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