{"product_id":"epro-pr9268-300-000-velocity-transducer","title":"EPRO PR9268-300-000 Velocity Transducer","description":"\u003cp\u003eThe \u003cstrong\u003eEPRO PR9268-300-000\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003ePR9268\u003c\/strong\u003e Electrodynamic Velocity Sensor, operates as a dedicated hardware component for absolute seismic vibration velocity measurement within turbomachinery protection systems. It converts mechanical casing oscillations directly into proportional analog electrical signals through an electrodynamic moving-coil architecture.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003ePR9268-300-000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eEPRO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e4.1 cm x 15.9 cm x 10.8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +80 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePowered via 24 VDC external supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0.1 to 100 m\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e28.5 mV\/mm\/s (+\/-5%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e4 to 1000 Hz (-3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIngress Protection\u003c\/td\u003e\n\u003ctd\u003eIP67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eRotor Dynamics and Gap Voltage Validation\u003c\/h3\u003e\n\u003cp\u003eThe PR9268 electrodynamic velocity sensor relies on dynamic electromagnetic induction where the relative motion between an internal permanent magnet and a suspended coil generates a voltage directly proportional to vibration velocity. To ensure accurate rotor dynamics tracking, the internal spring suspension system provides mechanical damping without requiring external bias power for primary element excitation.\u003c\/p\u003e\n\u003cp\u003eSignal integrity relies on proper gap clearance and vertical or horizontal orientation alignment. In dual-axis monitoring arrays, cross-talk suppression requires precise angular displacement between mounting positions to eliminate stray magnetic field coupling across adjacent sensor bodies.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the PR9268-300-000 require external power to generate its primary measuring signal?\u003c\/p\u003e\n\u003cp\u003eA: The electrodynamic sensing element operates passively via magnetic induction. However, the integrated transmitter electronics driving the standardized 4-20 mA DC loop output require an external 24 VDC power supply.\u003c\/p\u003e\n\u003cp\u003eQ: How is signal distortion prevented when routing cables across high-vibration machinery frames?\u003c\/p\u003e\n\u003cp\u003eA: The IP67 housing must be grounded directly to the machine casing, and the 4-20 mA current loop output cable must use twisted shielded pair construction with single-point grounding at the monitoring system cabinet.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the mounting surface on the machine bearing housing is flat, smooth, and free of rust or debris to guarantee full surface contact.\u003c\/li\u003e\n\u003cli\u003eTorque the sensor securing stud to the specified mechanical limit using an appropriate thread sealant to prevent thermal loosening.\u003c\/li\u003e\n\u003cli\u003eAlign the primary measuring axis of the sensor with the intended direction of radial or axial vibration measurement.\u003c\/li\u003e\n\u003cli\u003eRoute output cabling through flexible protective conduit and secure cable strain relief within 300 mm of the sensor head.\u003c\/li\u003e\n\u003cli\u003eConnect cable shielding exclusively to the earth terminal inside the control rack side to prevent ground loop currents from corrupting the 4-20 mA signal.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Emerson Epro","offers":[{"title":"Default Title","offer_id":45474331295859,"sku":"PR9268-300-000","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/PR9376-010-011_3_daf92eb2-98f3-40de-93b6-e91e8ed25565.png?v=1789111421","url":"https:\/\/www.dcssupplier.com\/products\/epro-pr9268-300-000-velocity-transducer","provider":"DcsSupplier Limited","version":"1.0","type":"link"}