{"product_id":"pr9268-301-100-electrodynamic-velocity-sensor-emerson-epro","title":"PR9268\/301-100 Electrodynamic Velocity Sensor | Emerson EPRO","description":"\u003cp\u003eConfigured for seismic vibration acquisition in rotating machinery, the \u003cstrong\u003eEmerson EPRO PR9268\/301-100\u003c\/strong\u003e (\u003cstrong\u003ePR9268\/301-100\u003c\/strong\u003e) Electrodynamic Velocity Sensor provides direct electrical execution of velocity-based vibration monitoring.\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\/301-100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eEmerson EPRO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +125 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive (no external power)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e28.5 mV\/mm\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e4 to 1000 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e+\/- 1.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eMechanical Monitoring and TSI Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe PR9268\/301-100 operates on an electrodynamic principle, where an internal mass-spring system converts seismic mechanical motion into a proportional voltage output. Accurate rotor dynamics analysis requires the sensor to be mounted within its calibrated orientation—specifically, horizontal with a tolerance of +\/- 10 deg for this variant. Operators must verify proper cabling to the monitoring system, as high-frequency coil induction is susceptible to electromagnetic interference. To maintain signal integrity, ensure the sensor body is mechanically coupled to the machine casing to minimize high-frequency attenuation, and perform periodic impedance checks to confirm the coil circuit continuity remains within specified limits.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the sensor require an external power supply to function?\u003c\/p\u003e\n\u003cp\u003eA: No. The PR9268\/301-100 is a passive electrodynamic device that generates its own output signal based on seismic movement. It does not require supply voltage, but must be connected to a compatible signal conditioner with the correct input impedance.\u003c\/p\u003e\n\u003cp\u003eQ: What is the significance of the natural frequency rating?\u003c\/p\u003e\n\u003cp\u003eA: The natural frequency of 4.5 Hz +\/- 0.75 Hz defines the lower limit of the sensor's linear measurement range. Operation below this natural frequency will result in phase shift and non-linear amplitude response, making it unsuitable for low-frequency structural vibration analysis.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eSecure the sensor to a flat, machined surface on the bearing housing or casing using a heavy-duty mounting stud to ensure rigid high-frequency transmission.\u003c\/li\u003e\n\u003cli\u003eVerify the mounting orientation is horizontal; exceeding the +\/- 10 deg tolerance will introduce gravitational bias to the internal spring, altering the natural frequency and damping characteristics.\u003c\/li\u003e\n\u003cli\u003eTerminate signal leads at the signal conditioner input using shielded twisted-pair cabling; connect the shield to a common instrument ground to minimize 50\/60 Hz line noise.\u003c\/li\u003e\n\u003cli\u003eConfirm the cable length does not introduce excessive capacitive loading, which can attenuate the high-frequency response (up to 1000 Hz).\u003c\/li\u003e\n\u003cli\u003eConduct a physical tap test during commissioning to verify a positive output signal, confirming polarity and circuit integrity before the machinery is brought to full operating speed.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"EMERSON","offers":[{"title":"Default Title","offer_id":53036128633141,"sku":"PR9268\/301-100","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/PR9268301-100.png?v=1782377160","url":"https:\/\/www.5gplc.com\/products\/pr9268-301-100-electrodynamic-velocity-sensor-emerson-epro","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}