{"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 relative thermal expansion between a turbine rotor and its casing. By precisely monitoring this mechanical growth, the system helps prevent catastrophic interference within steam turbines and other high-speed rotating assets. This module provides continuous, real-time analysis, comparing measured expansion data against user-defined thresholds to trigger protective alarms.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDesigned for the 3300 Series monitoring platform.\u003c\/li\u003e\n\u003cli\u003eIntegrates with proximity probe systems via Proximitor sensors.\u003c\/li\u003e\n\u003cli\u003eFeatures dual relay outputs for independent Alert and Danger alarm logic.\u003c\/li\u003e\n\u003cli\u003eProvides visual status updates via front-panel LEDs for OK, Bypass, Alert, and Danger conditions.\u003c\/li\u003e\n\u003cli\u003eSupports multiple analog output formats for integration with external control or data acquisition systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis monitor is primarily deployed in power generation and heavy industrial environments. It is essential for protecting large steam turbines, gas turbines, and compressors where thermal expansion differentials must be strictly managed to maintain mechanical integrity during startup, operation, and shutdown cycles.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\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\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 (nominal)\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\u003e+4 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 rack is powered down before inserting or removing the module to prevent electrical damage.\u003c\/li\u003e\n\u003cli\u003eVerify that the module is properly seated in the backplane to ensure reliable signal transmission.\u003c\/li\u003e\n\u003cli\u003eUse shielded cabling for all proximity probe inputs to minimize EMI\/RFI interference in the industrial environment.\u003c\/li\u003e\n\u003cli\u003eMaintain proper ventilation around the 3300 rack to ensure ambient temperatures remain within the 0 to 60 degC operating range.\u003c\/li\u003e\n\u003cli\u003eFollow standard ESD (electrostatic discharge) protection procedures when handling the module circuitry.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the XX represent in the model number?\u003c\/strong\u003e The XX denotes the specific measurement range configuration for the differential expansion, which must be selected based on the physical requirements of your turbine application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this module require external power?\u003c\/strong\u003e It is powered directly through the 3300 series rack backplane. The module consumes approximately 1.5 W during standard operation.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":44730577616984,"sku":"3300\/47-XX-03-01-00","price":50.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/wm_1_0937e86a-580d-4ff6-9a7d-ed0823937388.jpg?v=1788655372","url":"https:\/\/www.industriaxplc.com\/ar\/products\/bently-nevada-3300-47-xx-xx-02-00-differential-expansion-monitor-1","provider":"IndustriaX Limited","version":"1.0","type":"link"}