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Passive Speed Sensors (VR)
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Smith Systems, Inc. passive speed sensors convert mechanical motion to an A/C voltage without the need of a power supply. These self-contained magnetic sensors produce a magnetic field which, when in the proximity of ferrous objects in motion, generate a voltage. The frequency of this voltage is directly proportional to the speed of the object in motion.
Magna-Tran ® speed sensors are available in a variety of housing configurations and terminations. Housing configurations to accommodate high pressure and fluid submersion applications are available. These passive sensors are designed to accommodate a broad spectrum of temperatures and are resistant to oil, dirt and moisture.