{"product_id":"bently-nevada-3300-50-01-02-03-02-tachometer-monitor","title":"Bently Nevada 3300\/50-01-02-03-02 Tachometer Monitor","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 3300\/50-01-02-03-02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-reliability\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eTachometer Monitor\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eengineered for the continuous monitoring of rotating machinery speed. As a core component of the 3300 series rack, it tracks shaft RPM, detects zero-speed conditions, and calculates rotor acceleration to prevent overspeed or mechanical stress.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModel Number:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e3300\/50-01-02-03-02\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary Function:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTachometer, Zero Speed, and Acceleration Monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInput Signal:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e±10 V peak (Accepts Proximitor or Magnetic Pickup inputs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFrequency Range:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1 Hz to 10 kHz (User-selectable)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAlarming:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDual (Alert and Danger) configurable setpoints\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRelay Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e5 Amp Hermetically Sealed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSafety Options:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIncludes Safety Barriers (Internal)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAgency Approval:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFM (Factory Mutual) Certified\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePower Supply:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupplied via the 3300 System Rack\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e5.1 cm (W) x 20.3 cm (H) x 33.0 cm (D)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1.5 kg\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features and Engineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eComprehensive Speed Tracking:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBeyond simple RPM, the module monitors acceleration rates—a critical metric during turbine startup to ensure the rotor does not pass through critical resonance phases too slowly or exceed safety limits too quickly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDual-Channel Safety:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFeatures two alarm levels (Alert\/Danger) that can be mapped to the onboard hermetically sealed relay. This allows the module to trigger a local alarm or an automated machine trip if speed limits are breached.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIntegrated Safety Barriers:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe inclusion of barriers ensures that electrical energy levels sent to the speed sensors in the field are kept below ignition thresholds, allowing for safe operation in hazardous (Class I, Div 1) areas.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Frequency Versatility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupporting a range up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e10 kHz\u003c\/strong\u003e, the monitor can accurately process signals from high-tooth-count gears, providing extremely high resolution for speed measurements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIndustrial Ruggedness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSpecifically designed to operate in temperatures up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e65°C\u003c\/strong\u003e, ensuring performance in the hot environments common to power plant and refinery turbine decks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":46865186619582,"sku":"3300\/50-01-02-03-02","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-05-07_14-37-08_2d1badcf-227f-4650-904f-a600c37073f8.png?v=1778312269","url":"https:\/\/www.autooiltech.com\/products\/bently-nevada-3300-50-01-02-03-02-tachometer-monitor","provider":"AutoOilTech Limited","version":"1.0","type":"link"}