{"product_id":"330505-01-02-02-bently-nevada-low-frequency-velocity-sensor","title":"330505-01-02-02 Bently Nevada Low Frequency Velocity Sensor","description":"\u003ch2 id=\"product-overview\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #1a237e;\"\u003e330505-01-02-02\u003c\/strong\u003e is a high-performance low-frequency velocity sensor engineered by Bently Nevada for monitoring machinery with slow rotational speeds. Unlike standard sensors, this transducer is specifically optimized for applications like hydroelectric turbines or large fans, where detecting vibrations at frequencies as low as 0.5 Hz is critical for safety. By utilizing advanced seismic sensing technology, it provides high-resolution data on structural vibration and casing velocity, allowing maintenance teams to identify mechanical imbalances or hydraulic instabilities before they lead to costly downtime.\u003c\/p\u003e\n\n\u003ch2 id=\"technical-configuration\"\u003eTechnical Configuration\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #1a237e;\"\u003e330505-01-02-02\u003c\/strong\u003e features a precise mechanical build tailored for specific mounting requirements. The suffix \"-01\" indicates a 0° vertical mounting orientation, ensuring maximum sensitivity along the primary axis of vibration. This model is equipped with a 3\/8-24 UNF-2B internal thread and includes an M8 x 1 mounting adapter (Option -02), providing versatile installation options for various bearing housings. Housed in 300-series stainless steel and featuring a 2-pin Mil-C-5015 hermetic connector, the hardware is built to maintain signal integrity over long cable runs when integrated with Bently Nevada 3500 series 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;\"\u003eCase Material\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dddddd; padding: 8px;\"\u003e300 Series Stainless Steel\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\u003eTo ensure accurate data, the \u003cstrong\u003e330505-01-02-02\u003c\/strong\u003e must be mounted rigidly to the machine surface using the specified torque of 46 kg·cm. The base-to-target contact must be clean and flat to avoid high-frequency damping. Given its sensitivity to low-frequency movement, avoid routing the sensor cable near high-current power lines to prevent 50\/60 Hz electrical noise. For vertical applications, ensure the sensor is oriented within ±10° of the vertical axis as specified by the -01 mounting angle option.\u003c\/p\u003e\n\n\u003ch2 id=\"engineering-advantages\"\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cp\u003eThis sensor stands out for its superior amplitude linearity (±3%) and its ability to operate in 100% non-submerged humidity. Its hermetically sealed design protects internal piezo-electronics from moisture and contaminants common in hydro-power facilities. By providing a clean signal over long distances without degradation, the \u003cstrong\u003e330505-01-02-02\u003c\/strong\u003e enables centralized monitoring of remote assets, significantly improving the efficiency of plant-wide predictive maintenance programs.\u003c\/p\u003e\n\n\u003ch2 id=\"technical-faqs\"\u003eTechnical FAQs\u003c\/h2\u003e\n\u003cp\u003eQ1: Why use a velocity sensor instead of an accelerometer for low speeds?\u003cbr\u003e\nA1: Low-speed machinery produces very low acceleration levels but measurable velocity. This sensor is specifically tuned to provide a clearer signal in those low-frequency ranges (0.5–10 Hz).\u003c\/p\u003e\n\u003cp\u003eQ2: What is the significance of the Output Bias Voltage?\u003cbr\u003e\nA2: The -12 VDC bias voltage is used by the monitor to verify the OK status of the sensor. If the bias drifts significantly, it indicates a cable fault or sensor failure.\u003c\/p\u003e\n\u003cp\u003eQ3: Can this sensor be mounted horizontally?\u003cbr\u003e\nA3: The -01 option is calibrated for vertical mounting (0°). Mounting it horizontally may affect its sensitivity; for horizontal applications, a 90° calibrated model should be selected.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":51050413293700,"sku":"330505-01-02-02","price":156.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/7454\/7844\/files\/330505-01-02-02-1.jpg?v=1778071053","url":"https:\/\/www.etowonauto.com\/az\/products\/330505-01-02-02-bently-nevada-low-frequency-velocity-sensor","provider":"Etowon Auto","version":"1.0","type":"link"}