{"product_id":"epro-pr9268-200-000-electrodynamic-velocity-sensor","title":"EPRO pr9268 \/ 200-000 Electrodynamic Velocity Sensor","description":"\u003cp\u003eThe \u003cstrong\u003eEPRO PR9268\/200-000\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003ePR9268\/200-000\u003c\/strong\u003e Electrodynamic Velocity Sensor, operates as a dedicated hardware component for absolute seismic vibration acquisition within turbomachinery protection systems.\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\/200-000\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\u003e0.28 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard cylindrical probe body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 deg C to +100 deg C (-4 deg F to +212 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive self-generating electromagnetic element\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Principle\u003c\/td\u003e\n\u003ctd\u003eElectrodynamic velocity sensing via electromagnetic induction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e28.5 mV\/mm\/s (723.9 mV\/in\/s) at 80 Hz, 20 deg C, 100 k-ohm load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e4 Hz to 1000 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration Amplitude\u003c\/td\u003e\n\u003ctd\u003e+\/- 1500 um peak-to-peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Resistance\u003c\/td\u003e\n\u003ctd\u003e0 to 100% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIngress Protection\u003c\/td\u003e\n\u003ctd\u003eIP55\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eAnalog AC voltage proportional to vibration velocity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eRotor Dynamics and Cross-Talk Suppression\u003c\/h3\u003e\n\u003cp\u003eThe self-generating electrodynamic element provides a low-impedance AC voltage output proportional to absolute vibration velocity without requiring external active DC excitation. With a wide frequency response from 4 Hz to 1000 Hz, the sensor captures both sub-synchronous rotor dynamics—such as oil whirl, structural resonance, and seal rub—and high-frequency rotational harmonics. Internal magnetic shielding prevents cross-talk suppression degradation when multiple sensors are mounted in close orthogonal proximity on turbomachinery bearing housings.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the PR9268\/200-000 require external power to output a vibration signal?\u003c\/p\u003e\n\u003cp\u003eA: No, the sensor utilizes an electrodynamic moving-coil design that generates a proportional millivolt AC voltage via internal electromagnetic induction.\u003c\/p\u003e\n\u003cp\u003eQ: How does the 4 Hz lower frequency limit assist in turbomachinery protection?\u003c\/p\u003e\n\u003cp\u003eA: The 4 Hz lower limit allows detection of slow rotational speed transients and low-frequency sub-synchronous instabilities before destructive harmonic vibrations develop.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the sensor housing squarely on a rigid bearing casing using standard thread engagement guidelines (minimum 5 full turns of thread engagement).\u003c\/li\u003e\n\u003cli\u003eConnect signal wiring using twisted shielded pair cable, ensuring the cable shield is terminated to ground at the monitoring rack side only to prevent earth loops.\u003c\/li\u003e\n\u003cli\u003eRoute interconnect cabling through grounded steel flexible conduit when installed near high-power electrical equipment or switching drives.\u003c\/li\u003e\n\u003cli\u003eInspect physical cable connections periodically to ensure stress relief and prevent wire fatigue from continuous mechanical vibration.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Emerson Epro","offers":[{"title":"Default Title","offer_id":45491483115635,"sku":"pr9268 \/ 200-000","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/CON021_PR6424002-010_1_1367b184-5268-47a5-b032-53fd5b764375.jpg?v=1789357427","url":"https:\/\/www.dcssupplier.com\/ar\/products\/epro-pr9268-200-000-electrodynamic-velocity-sensor","provider":"DcsSupplier Limited","version":"1.0","type":"link"}