{"product_id":"bently-nevada-3300-65-13-01-00-00-01-00-keyphasor-module","title":"Bently Nevada 3300\/46-XX-XX-01-00 Differential Expansion Monitor","description":"\u003cp\u003eThe Bently Nevada 3300\/46 Differential Expansion Monitor is a specialized rack-based module engineered to track the relative axial movement between a machine rotor and its casing. By monitoring this critical thermal growth, the module helps prevent catastrophic mechanical interference in steam turbines and large rotating equipment. It provides continuous, real-time signal processing and compares measured values against user-defined Alert and Danger setpoints to ensure timely machinery protection.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDesigned for integration within the 3300 monitoring system rack.\u003c\/li\u003e\n\u003cli\u003eProvides continuous measurement of rotor-to-casing differential expansion.\u003c\/li\u003e\n\u003cli\u003eIncludes dedicated Alert and Danger relay logic for reliable machine shutdown or warning.\u003c\/li\u003e\n\u003cli\u003eFront-panel LED indicators provide immediate visual status for OK, Bypass, Alert, and Danger states.\u003c\/li\u003e\n\u003cli\u003eCompatible with standard Bently Nevada proximity probe\/Proximitor sensor configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eThermal expansion monitoring in industrial steam turbines.\u003c\/li\u003e\n\u003cli\u003eProtection of large rotating machinery against axial displacement damage.\u003c\/li\u003e\n\u003cli\u003eMachinery condition monitoring systems where rotor-casing interference is a primary risk.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e3300\/46-XX-XX-01-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003e3300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e1.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\/mil or 100 mV\/mil (probe dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.33% typical (at 25 degC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Outputs\u003c\/td\u003e\n\u003ctd\u003e4-20 mA, 1-5 VDC, 0 to -10 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the 3300 rack is properly grounded according to site safety standards to prevent signal noise.\u003c\/li\u003e\n\u003cli\u003eAlways power down the rack before inserting or removing the monitor module to prevent electrical arcing or damage to the backplane connectors.\u003c\/li\u003e\n\u003cli\u003eRoute sensor signal cables away from high-voltage lines and sources of electromagnetic interference (EMI) to maintain measurement integrity.\u003c\/li\u003e\n\u003cli\u003eVerify that the configured measurement range and probe type match the physical installation parameters before applying full system power.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eWhat does the 01 relay option indicate?\u003c\/h3\u003e\u003cp\u003eThe 01 suffix designates that the module is equipped with a single relay output configuration, which is utilized for triggering machine protection or alarm systems when setpoints are exceeded.\u003c\/p\u003e\u003ch3\u003eIs this module compatible with existing 3300 racks?\u003c\/h3\u003e\u003cp\u003eYes, the 3300\/46 is designed to fit into standard 3300 series rack slots, maintaining consistency with existing Bently Nevada infrastructure.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":44003301556314,"sku":"3300\/46-XX-XX-01-00","price":50.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/wm_1_e1db3cf3-700a-47a5-9e09-fc7fb90667a8.jpg?v=1788367295","url":"https:\/\/www.spareoil.com\/ar\/products\/bently-nevada-3300-65-13-01-00-00-01-00-keyphasor-module","provider":"SpareOil Automation","version":"1.0","type":"link"}