{"product_id":"emerson-pr9268-300-000-electrodynamic-velocity-sensor","title":"Emerson PR9268\/300-000 Electrodynamic Velocity Sensor","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eEmerson PR9268\/300-000\u003c\/strong\u003e absolute vibration transducer operates on the seismic low-tuned measuring principle to deliver precise absolute vibration measurements for machinery protection systems. Designed primarily for horizontal measurement applications, the electro-dynamic sensor utilizes a measuring coil suspended on membrane springs as its seismic mass. When operated above the natural resonance frequency, the seismic coil remains stationary, generating a voltage signal directly proportional to the vibration velocity through the relative movement between the resting coil and the moving transducer housing. Housed in durable materials with splash-proof protection, this device provides continuous asset monitoring and machinery protection in hostile industrial monitoring applications. It is fully compatible with professional machinery health protection systems and cards, such as the A6120 bearing vibration monitor and the A6500-xR system rack monitoring modules.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for reliable machinery protection systems and continuous vibration monitoring\u003c\/li\u003e\n\u003cli\u003eElectro-dynamic mechanical spring-mass sensor operating on a low-tuned seismic principle\u003c\/li\u003e\n\u003cli\u003eConfigured for horizontal measurement orientation with an operating temperature tolerance up to 100 degC\u003c\/li\u003e\n\u003cli\u003eAvailable with additional cable protection via a built-in armored cable structure\u003c\/li\u003e\n\u003cli\u003eFlexible integration options with or without an industrial Harting connector interface\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIndustrial machinery protection systems\u003c\/li\u003e\n\u003cli\u003eBearing vibration monitoring structures\u003c\/li\u003e\n\u003cli\u003ePower generation plants and heavy rotating equipment protection\u003c\/li\u003e\n\u003cli\u003eHostile industrial process environments requiring continuous asset health monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical 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\u003eValue\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEmerson\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasuring Principle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLow tuned measuring principle for absolute vibrations (Electro-dynamic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasuring Direction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHorizontal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(± 5%) @ 80 Hz \/ 20 degC \/ 100 kOhm: 28.5 mV\/mm\/s (723.9 mV\/in\/s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e± 1,500 µm (59,055 µin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVibration Amplitude (Nominal Mounting)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3000 µm peak-peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLimit Stops\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4000 µm peak-peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(± 3dB) 4 to 1,000 Hz (240 to 60,000 cpm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNatural Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.5 Hz ± 0.75 Hz (at 20 degC and 100 kOhm load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransverse Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.27 at 110 Hz (horizontal mounting)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamping Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.56 at 20 degC (100 kOhm load), 0.42 at 100 degC (100 kOhm load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLinearity Error of Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 2%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePermissible Acceleration (Measuring)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 g peak-peak continuous, 20 g peak-peak short-time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePermissible Acceleration (Transverse)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 g peak-peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResistance Measuring Circuit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1875 Ohm ± 10% (resistive load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 1 MOhm (test voltage 500 V AC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInductance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 90 mH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCapacity against Housing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1.2 nF (inclusive cable without corrugated hose)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Max Lifting Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.8 mA (maximum deviation 30 deg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20 to 100 degC (-4 to 180 FX)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage\/Transport Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40 to +100 degC (without packing), -40 to +70 degC (with packing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHumidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 100% Non-Condensing (in housing and plug)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP 55\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAl Mg Si Pb F28\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection Cable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 x 0.5 mm2 shielded, PTFE coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum Bending Radius\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mm (for cable and protection hose)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Net Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApproximately 260 g (transducer only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandling Precautions:\u003c\/strong\u003e Do not expose the transducer to hard mechanical shocks and do not drop it. Hard impacts can lead to critical internal damage, causing impairment or total loss of sensitivity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Surface:\u003c\/strong\u003e Mount the transducer firmly on a flat, clean surface using three through-bores for M6 screws or three blind hole threads for M4 screws (maximum thread depth 10 mm). Firmly tighten the mounting components to ensure accurate vibration transmission and measurement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Angle Constraints:\u003c\/strong\u003e The transducer is optimized for a horizontal nominal measuring direction (90 deg position). Without a lifting or sinking current, the maximum allowed angular deviation from the nominal position is ±10 deg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifting\/Sinking Currents:\u003c\/strong\u003e When mounted with an angular deviation between ±60 deg and ±80 deg, a lifting current must be enabled via the system configuration software (maximum 1.8 mA at 60 deg deviation) to position the seismic mass accurately into the center of its working range. If deviation spans ±100 deg to ±120 deg, a corresponding sinking current must be utilized.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Routing:\u003c\/strong\u003e Install the sensor connection cable without any structural torsion or elongation. Protect the cable from external environmental hazards. If using a model with a stainless steel armored protection hose, secure the hose with a clamp located as close to the transducer body as possible.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding and Shielding:\u003c\/strong\u003e The metal protection hose on armored cable versions is fully insulated from the cable shield and the transducer housing. Ensure the system installation conforms to standard EMC regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eATEX Certification:\u003c\/strong\u003e II 1G Ex ia IIC T6... T4 Ga (Certificate Number: BVS 22 ATEX E 007 X)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIECEx Certification:\u003c\/strong\u003e Ex ia IIC T6... T4 Ga (Certificate Number: IECEx BVS 22.0009X)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUKCA Certification:\u003c\/strong\u003e Designated explosive atmosphere protection regulations compliance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCE Mark:\u003c\/strong\u003e Complies with European Electromagnetic Compatibility (2014\/30\/EU), ATEX Directive (2014\/34\/EU), and RoHS Directive (2011\/65\/EU) standards.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Emerson","offers":[{"title":"Default Title","offer_id":52695172809067,"sku":"PR9268\/300-000","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/emerson-pr9268-300-000-epro-eddy-current-sensor-qpspeijg1rd_3cf9d47e-52a0-4ade-879d-6295abb285ca.jpg?v=1766114105","url":"https:\/\/www.plcprotech.com\/products\/emerson-pr9268-300-000-electrodynamic-velocity-sensor","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}