{"product_id":"330500-02-04-bently-nevada-velomitor-piezo-velocity-sensor-vibration-monitoring","title":"330500-02-04 Bently Nevada Velomitor Piezo-velocity Sensor | Vibration Monitoring","description":"\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 330500-02-04 Velomitor\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erepresents a critical advancement in casing vibration technology, specifically engineered for the rigorous demands of large-scale rotating machinery. By integrating high-performance piezoelectric sensing elements with sophisticated internal electronics, this sensor converts acceleration into a velocity signal directly at the source. This solid-state architecture eliminates the mechanical wear associated with traditional moving-coil velocity transducers, ensuring long-term reliability for monitoring steam turbines, centrifugal compressors, and high-speed pumps.\u003c\/p\u003e\n\u003cp\u003eAs a cornerstone of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eTSI (Turbine Supervisory Instrumentation)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003estrategies, the 330500-02-04 provides essential data for early fault detection. It excels in identifying structural resonance, imbalance, and misalignment by capturing absolute vibration on the machine housing. Its rugged design supports multi-axis orientation, allowing maintenance teams to deploy it in restricted spaces without compromising signal integrity or accuracy.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Configuration: Option Breakdown\u003c\/h2\u003e\n\u003cp\u003eThe 330500 series utilizes a specific coding structure to define mounting hardware and agency approvals. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e-02-04\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econfiguration specifies the following engineering standards:\u003c\/p\u003e\n\u003ch3\u003eMounting Hardware (Option -02)\u003c\/h3\u003e\n\u003cp\u003eThis suffix designates an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eM8 x 1.25 adapter\u003c\/strong\u003e. This metric threading allows for direct integration into international machinery casings, providing a secure, high-stiffness connection essential for accurate high-frequency vibration transmission.\u003c\/p\u003e\n\u003ch3\u003eAgency Approval (Option -04)\u003c\/h3\u003e\n\u003cp\u003eThe -04 suffix indicates\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMultiple Approvals (ATEX, IECEx, CSA)\u003c\/strong\u003e. This empowers the sensor to operate safely in Zone 0, Zone 1, or Division 1 hazardous environments. It meets stringent global explosion-proof and intrinsic safety standards, making it the preferred choice for oil, gas, and chemical processing facilities.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3.94 mV\/mm\/s (100 mV\/in\/s) ±5%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4.5 Hz to 5,000 Hz (±3.0 dB)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eVelocity Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1270 mm\/s (50 in\/s) Peak\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAmplitude Linearity\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e±2% to 152 mm\/s (6 in\/s)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTransverse Sensitivity\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLess than 5% of axial\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Impedance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u0026lt; 2400 Ω\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-40°C to +121°C (-40°F to +250°F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eHazardous Area Rating\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eATEX\/IECEx\/CSA (Intrinsically Safe)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eEngineering Installation \u0026amp; Maintenance Guide\u003c\/h2\u003e\n\u003cp\u003eSuccessful deployment of the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e330500-02-04\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erequires strict adherence to precision mounting protocols to ensure the sensor captures true machine vibration rather than local resonance.\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSurface Preparation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnsure the mounting surface is flat to within 0.001 inches and possesses a surface finish of at least 32 micro-inches. Apply a light film of silicone grease to the interface to improve high-frequency coupling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTorque Requirements:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUse a torque wrench to tighten the sensor to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e4.5 N·m (40 in·lb)\u003c\/strong\u003e. Under-tightening leads to signal attenuation, while over-tightening can damage the internal piezoelectric crystal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCable Routing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMaintain a minimum bend radius of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e25.4 mm (1.0 inch)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor the connecting cable. Secure the cable to the machine housing within 10 inches of the sensor to prevent \"cable whip,\" which introduces mechanical noise into the velocity signal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnvironmental Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhile the sensor is hermetically sealed, use weatherproofing boots or conduit at the connector junction in outdoor applications to prevent moisture ingress and connector pin corrosion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e330500-02-04\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003estands out in the Bently Nevada catalog due to its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSolid-State Durability\u003c\/strong\u003e. Because it lacks moving parts, it is immune to the \"stiction\" and fatigue that plague older electro-mechanical sensors. This makes it exceptionally suited for high-cycle environments where continuous monitoring is non-negotiable.\u003c\/p\u003e\n\u003cp\u003eFurthermore, its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBroad Frequency Envelope\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eallows it to monitor both low-frequency structural issues and higher-frequency aerodynamic or hydraulic phenomena. Its seamless compatibility with the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3500\/42M Prox\/Veloc Monitor\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eensures that users can integrate these sensors into existing Bently Nevada racks without requiring complex signal conditioning or external power supplies.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical FAQs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Can I mount the 330500-02-04 in any orientation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA1: Yes. Unlike older moving-coil sensors that are restricted by gravity, the piezo-velocity design allows for mounting at any angle—horizontal, vertical, or inclined—without affecting sensitivity or calibration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: What is the primary difference between a Velomitor and a standard Accelerometer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA2: While both use piezoelectric elements, the Velomitor contains internal integration circuitry that converts acceleration to velocity. This provides a signal that is much easier to use for machine protection, as velocity is the industry standard for assessing vibration severity on bearing housings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: How do I verify if the sensor is functioning correctly without a shaker table?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA3: You can perform a \"Bias Check.\" When powered by a Bently Nevada monitor, the sensor should maintain a DC Bias Voltage (typically around 10-12 VDC). A reading of 0V or supply voltage (usually -24V) indicates a short or open circuit in the cabling or sensor head.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Is the 330500-02-04 compatible with the older 3300 series rack?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA4: Yes. It is fully compatible with the 3300\/55 Dual Velocity Monitor, though it is most commonly paired with the modern 3500 System for enhanced diagnostic capabilities.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":53296613818678,"sku":"330500-02-04","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/2094\/8534\/files\/bently-nevada-330500-02-04-velomitor-piezo-velocity-sensors-wnixonkkj12.jpg?v=1764045099","url":"https:\/\/www.motrolixtech.com\/products\/330500-02-04-bently-nevada-velomitor-piezo-velocity-sensor-vibration-monitoring","provider":"Motrolix","version":"1.0","type":"link"}