{"product_id":"330505-03-02-00-bently-nevada-0-5hz-hydro-turbine-sensor","title":"330505-03-02-00 Bently Nevada 0.5Hz Hydro Turbine Sensor","description":"\u003ch2 id=\"product-overview\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #1a237e;\"\u003e330505-03-02-00\u003c\/strong\u003e is a high-performance seismic velocity sensor engineered by Bently Nevada for monitoring slow-speed machinery from an inverted orientation. Unlike standard vertical sensors, this transducer is specifically calibrated for 180° mounting, making it ideal for monitoring the underside of bearing housings in hydroelectric turbines or large fans. By capturing vibrations at frequencies as low as 0.5 Hz, it delivers high-resolution casing velocity data that allows maintenance teams to detect structural resonances and mechanical imbalances before they lead to catastrophic failure.\u003c\/p\u003e\n\n\u003ch2 id=\"technical-configuration\"\u003eTechnical Configuration\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #1a237e;\"\u003e330505-03-02-00\u003c\/strong\u003e features a precise mechanical design tailored for inverted integration. The \"-03\" mounting angle option specifies a 180° inverted orientation (±10°), ensuring internal seismic masses are correctly balanced for gravity in the upside-down position. This model utilizes a 3\/8-24 UNF-2B internal mounting thread and is supplied without an external adapter (-00 option). Housed in 300-series stainless steel with a hermetically sealed 2-pin Mil-C-5015 connector, the hardware maintains superior signal integrity over long cable runs up to 305 meters when paired with Bently Nevada 3500\/46M monitors.\u003c\/p\u003e\n\n\u003ch2 id=\"technical-specifications\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 20px 0;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"border: 1px solid #dddddd; padding: 8px; text-align: left;\"\u003eParameter\u003c\/th\u003e\n      \u003cth style=\"border: 1px solid #dddddd; padding: 8px; text-align: left;\"\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dddddd; padding: 8px;\"\u003eSensitivity\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dddddd; padding: 8px;\"\u003e20 mV\/mm\/s (508 mV\/in\/s) ±10%\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dddddd; padding: 8px;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dddddd; padding: 8px;\"\u003e0.5 Hz to 1000 Hz (±3.0 dB)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dddddd; padding: 8px;\"\u003eVelocity Range\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dddddd; padding: 8px;\"\u003e102 mm\/s (4 in\/s) peak\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dddddd; padding: 8px;\"\u003eWeight\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dddddd; padding: 8px;\"\u003e\u0026lt; 375 grams (13.2 oz)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dddddd; padding: 8px;\"\u003eOperating Temp\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dddddd; padding: 8px;\"\u003e-40°C to +100°C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dddddd; padding: 8px;\"\u003eMTBF\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dddddd; padding: 8px;\"\u003e50,000 Hours\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2 id=\"installation-guide\"\u003eInstallation \u0026amp; Maintenance Guide\u003c\/h2\u003e\n\u003cp\u003eFor accurate data in inverted applications, the \u003cstrong\u003e330505-03-02-00\u003c\/strong\u003e must be mounted rigidly with a maximum torque of 46 kg·cm. The mounting base must be clean and flat to prevent high-frequency signal loss. As an inverted-mount sensor (-03), it must be oriented within ±10° of the 180° vertical axis. Technicians should use shielded cabling for long runs to protect the low-frequency data from EMI, and ensure the hermetic 2-pin connector is securely mated to maintain its 100% relative humidity rating.\u003c\/p\u003e\n\n\u003ch2 id=\"engineering-advantages\"\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e330505-03-02-00\u003c\/strong\u003e is distinguished by its ultra-low thermal drift (±0.015% per °C) and exceptional amplitude linearity (±3%). Its hermetically sealed stainless steel housing allows for continuous operation in saturated humidity environments common in hydro-power facilities. With a 500 V RMS dielectric strength and high vibration resistance, this sensor provides the durability required for centralized monitoring of remote, critical assets without signal degradation over long distances.\u003c\/p\u003e\n\n\u003ch2 id=\"technical-faqs\"\u003eTechnical FAQs\u003c\/h2\u003e\n\u003cp\u003eQ1: Why is the 180° mounting option necessary?\u003cbr\u003e\nA1: Velocity sensors contain a suspended seismic mass; the -03 option ensures this mass is correctly positioned for gravity when the sensor is mounted upside down, preventing the sensor from reporting a \"Not OK\" status.\u003c\/p\u003e\n\u003cp\u003eQ2: Can I use this sensor at frequencies higher than 1000 Hz?\u003cbr\u003e\nA2: While the sensor functions at higher frequencies, the calibrated accuracy is optimized for the 0.5 to 1000 Hz range, which covers the fundamental vibration frequencies of slow-turning machinery.\u003c\/p\u003e\n\u003cp\u003eQ3: How does the sensor handle humidity?\u003cbr\u003e\nA3: The \u003cstrong\u003e330505-03-02-00\u003c\/strong\u003e is hermetically sealed and rated for up to 100% relative humidity (non-submerged), making it ideal for the damp environments found in hydroelectric plants.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":51047742505092,"sku":"330505-03-02-00","price":126.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/7454\/7844\/files\/330505-03-02-00.jpg?v=1778072248","url":"https:\/\/www.etowonauto.com\/az\/products\/330505-03-02-00-bently-nevada-0-5hz-hydro-turbine-sensor","provider":"Etowon Auto","version":"1.0","type":"link"}