{"product_id":"3300-48-01-01-00-00-bently-nevada-3300-48-case-expansion-monitor-module","title":"3300\/48-01-01-00-00 Bently Nevada 3300\/48 Case Expansion Monitor Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe 3300\/48-01-01-00-00 is a dedicated single-channel instrument designed to measure the absolute thermal growth of a machine's casing relative to its foundation. Unlike differential expansion which tracks internal clearances, this Case Expansion Monitor provides critical data on how the outer structure of large steam turbines or high-temperature machinery responds to thermal cycles. By utilizing Linear Variable Differential Transformers (LVDTs), the module converts mechanical displacement into precise electrical signals, ensuring that the machine frame expands freely on its sliding feet. This prevents \"cocking\" or binding that could lead to severe internal misalignment and subsequent mechanical damage.\u003c\/p\u003e\n\u003ch3\u003eEssential Hardware Parameters\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eMeasurement Channel: Single-channel absolute expansion monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFull-Scale Range: 0 to 25 mm (Option 01)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTransducer Interface: Compatible with standard LVDT inputs (Option 01)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAlarm Relay Type: Epoxy-sealed relays for industrial reliability (Option 00)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSafety Certification: No specific agency approval required for this configuration (Option 00)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSignal Accuracy: Within ±1.6% of full-scale value\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFront Panel Display: 83 mm (3.25 inches) vertical digital readout\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNet Weight: 1.15 kg (2.54 lbs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePhysical Footprint: 241 mm x 50 mm x 103 mm (9.5 in x 1.97 in x 4.05 in)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Deployment Scenarios\u003c\/h3\u003e\n\u003cp\u003eThis monitoring system is a staple in power generation and heavy industry where massive thermal shifts are part of daily operations. Key implementations include:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eBase-Load Steam Turbines: Tracking casing expansion to ensure sliding feet are properly lubricated and moving freely.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLarge Gas Turbines: Monitoring structural integrity during rapid startup and shutdown cycles.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-Pressure Boiler Feed Pumps: Detecting uneven growth that could strain connected piping.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIndustrial Drying Kilns: Measuring outer shell displacement in paper and textile manufacturing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCombined Cycle Power Plants: Integrating case expansion data into a centralized machinery protection strategy.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the primary difference between Case Expansion and Differential Expansion?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Case expansion measures the absolute growth of the machine housing relative to the floor, whereas differential expansion measures the relative growth between the rotor and the casing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why does this 3300\/48 model utilize an LVDT instead of a proximity probe?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: LVDTs are better suited for measuring the large, slow mechanical movements associated with casing expansion, typically covering ranges up to 25mm or more, which exceeds the capability of standard proximity sensors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this module compatible with the 3300\/01 System Monitor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, as a standard 3300 series component, it communicates via the rack backplane with the system monitor for power and global alarm status.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this unit be used in hazardous environments?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This specific configuration (Option 00) does not include internal safety barriers or CSA\/ATEX approvals. For hazardous zones, external zener barriers must be integrated into the signal loop.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I verify the module is functioning correctly without a machine shutdown?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The monitor features a front-panel \"OK\" LED and self-diagnostic circuitry that continuously verifies the integrity of the LVDT input and internal processing logic.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45847790092461,"sku":"3300\/48-01-01-00-00","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/330048-01-01-00-00_1.jpg?v=1774510020","url":"https:\/\/www.maxwellplc.com\/products\/3300-48-01-01-00-00-bently-nevada-3300-48-case-expansion-monitor-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}