{"product_id":"bently-nevada-3300-47-xx-xx-02-00-differential-expansion-monitor-1","title":"Bently Nevada 3300\/47-XX-03-01-00 Differential Expansion Monitor","description":"\u003cp\u003eThe Bently Nevada 3300\/47 Differential Expansion Monitor is a specialized rack-mounted module engineered to track the axial thermal growth between a turbine rotor and its casing. By monitoring these critical clearance changes, the unit helps prevent mechanical contact and potential catastrophic equipment failure during machine startup, operation, or shutdown cycles.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eContinuous monitoring of differential expansion parameters for large rotating machinery.\u003c\/li\u003e\n\u003cli\u003eIntegration with proximity probes and Proximitor sensors for high-precision measurement.\u003c\/li\u003e\n\u003cli\u003eDual relay outputs configured for Alert and Danger alarm logic.\u003c\/li\u003e\n\u003cli\u003eIntegrated LED status indicators for visual confirmation of OK, Bypass, Alert, and Danger states.\u003c\/li\u003e\n\u003cli\u003eSignal conditioning designed for high accuracy in demanding industrial environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis monitor is primarily deployed in power generation and heavy industrial facilities to protect steam turbines and other large rotating assets where thermal expansion management is essential for operational integrity.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e3300\/47-XX-03-01-00\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 (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\/mil (8 V\/mm) or 100 mV\/mil (4 V\/mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/- 0.33% typical, +\/- 1% max at 25 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signals\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mA, 1 to 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 series rack is properly grounded to a clean instrument earth to minimize noise interference.\u003c\/li\u003e\n\u003cli\u003ePower down the rack before inserting or removing the module to prevent electrical damage.\u003c\/li\u003e\n\u003cli\u003eVerify that the probe configuration matches the specific requirements of the XX measurement range and Proximitor sensor interface.\u003c\/li\u003e\n\u003cli\u003eRoute signal cables away from high-voltage power lines and sources of electromagnetic interference (EMI).\u003c\/li\u003e\n\u003cli\u003eMaintain adequate ventilation within the cabinet to ensure the ambient temperature remains within the 0 to 60 degC range.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the primary function of the 3300\/47 module?\u003c\/strong\u003e It measures the differential thermal expansion between the turbine rotor and casing to prevent mechanical interference.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this module include relay outputs?\u003c\/strong\u003e Yes, this specific model (03-01-00) includes dual relay outputs configured for Alert and Danger alarm conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat input type does it support?\u003c\/strong\u003e It is designed to accept inputs from proximity probes via standard Proximitor sensors.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":44033621033050,"sku":"3300\/47-XX-03-01-00","price":50.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/wm_1_abeb3bb5-469c-4b8c-940e-3bc091d36e7b.jpg?v=1788914775","url":"https:\/\/www.spareoil.com\/products\/bently-nevada-3300-47-xx-xx-02-00-differential-expansion-monitor-1","provider":"SpareOil Automation","version":"1.0","type":"link"}