{"product_id":"emerson-pr9268-301-100-electrodynamic-velocity-sensor","title":"EMERSON PR9268\/301-100 Electrodynamic Velocity Sensor","description":"\u003cp\u003eThe \u003cstrong\u003eEpro PR9268\/301-100\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003ePR9268\/301-100\u003c\/strong\u003e Electrodynamic Velocity Sensor, operates as a dedicated hardware component for casing vibration and velocity measurement within turbomachinery protection systems. Operating across steam, gas, and hydro turbine installations, this sensor measures absolute machine vibration for continuous condition 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\u003eEpro (Emerson)\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\u003e0.45 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard PR9268 Sensor Housing Form Factor\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 Electrodynamic Sensor (Self-Generating Output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Type\u003c\/td\u003e\n\u003ctd\u003eSpeed \/ Velocity Measurement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e+\/-1 mm\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\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e28.5 mV\/mm\/s (723.9 mV\/in\/s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-0.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNatural Frequency\u003c\/td\u003e\n\u003ctd\u003e4.5 Hz +\/- 0.75 Hz at 20 deg C (68 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Orientation\u003c\/td\u003e\n\u003ctd\u003eHorizontal Installation (+\/-10 deg Tolerance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol \u0026amp; Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eEpro PR9268\/301-100\u003c\/strong\u003e generates a self-powered AC millivolt velocity output proportional to dynamic casing motion. To maintain signal integrity across connected monitoring channels, the sensor output relies on dedicated channel-to-channel isolation within receiving signal transmitters or DCS I\/O cards. This isolation prevents common-mode noise propagation and ground loop disruption across 4-20 mA HART loop protocol networks during continuous operation.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the strict physical mounting orientation limits for the PR9268\/301-100 sensor?\u003c\/p\u003e\n\u003cp\u003eA: The sensor is specified for horizontal mounting installations with a tight angular alignment tolerance of +\/-10 deg.\u003c\/p\u003e\n\u003cp\u003eQ: Does the PR9268\/301-100 electrodynamic velocity sensor require external DC loop excitation power?\u003c\/p\u003e\n\u003cp\u003eA: No. As an electrodynamic velocity transducer, it operates as a passive, self-generating sensor generating a millivolt signal proportional to mechanical vibration.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eInspect the sensor mounting stud and target surface to ensure the mounting face is clean, flat, and free of burrs.\u003c\/li\u003e\n\u003cli\u003eMount the \u003cstrong\u003ePR9268\/301-100\u003c\/strong\u003e sensor horizontally, maintaining the physical mounting tolerance within +\/-10 deg of the horizontal axis.\u003c\/li\u003e\n\u003cli\u003eTorque the mounting stud according to standard machinery enclosure specifications to ensure solid mechanical contact.\u003c\/li\u003e\n\u003cli\u003eConnect shielded twisted-pair cabling to the sensor connector, routing wires through grounded conduit away from high-voltage motor cables to minimize electromagnetic noise.\u003c\/li\u003e\n\u003cli\u003eTerminate cable shields at a single earth ground point on the main monitoring cabinet terminal strip to prevent ground loop noise.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Emerson","offers":[{"title":"Default Title","offer_id":45353337585779,"sku":"PR9268\/301-100","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/screenshot_2026-08-13_11-49-46_1200x1200_78999add-80bb-452d-966e-a8069a3a5f80.jpg?v=1786599374","url":"https:\/\/www.dcssupplier.com\/ar\/products\/emerson-pr9268-301-100-electrodynamic-velocity-sensor","provider":"DcsSupplier Limited","version":"1.0","type":"link"}