{"product_id":"bently-nevada-330500-00-00-velocity-sensors-velomitor","title":"Bently Nevada 330500-00-00 Velocity Sensors Velomitor","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 330500-00-00\u003c\/strong\u003e is a rugged, high-performance \u003cstrong\u003eVelomitor Piezo-Velocity Sensor\u003c\/strong\u003e engineered to provide continuous casing vibration measurements for critical industrial machinery. Unlike traditional moving-coil velocity transducers that suffer from mechanical wear and orientation limitations, this advanced sensor utilizes integrated solid-state electronics alongside a piezoelectric ceramic crystal. It measures acceleration and internally integrates the signal into a highly accurate velocity output, making it exceptionally reliable for predictive maintenance, condition monitoring, and plant safety systems.\u003c\/p\u003e\n\u003cp\u003eBy measuring casing vibration in terms of velocity, the 330500-00-00 is fine-tuned to capture the most destructive mid-frequency vibration signatures, typically ranging from \u003cstrong\u003e4.5 Hz to 2,000 Hz\u003c\/strong\u003e. This frequency profile is vital for identifying mechanical faults such as rotor unbalance, shaft misalignment, structural looseness, and gear mesh problems.\u003c\/p\u003e\n\u003cp\u003eThis explicit hardware configuration features a standard 1\/2-20 UNF threaded mounting base and carries the base \"No Approvals\" option, making it an economical choice for non-hazardous industrial areas or general-purpose balance-of-plant machinery monitoring loops. The device outputs a nominal scale factor of \u003cstrong\u003e3.94 mV\/mm\/s (100 mV\/in\/s)\u003c\/strong\u003e and interfaces directly via a 2-pin top connector with standard Bently Nevada 3500 rack architectures or multi-channel machinery protection monitors.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification Profile\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBently Nevada (A Baker Hughes Business)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e330500-00-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransducer Platform\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVelomitor Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensing Element\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiezoelectric Ceramic with Internal Integration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Signal Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eContinuous AC Velocity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Scale Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.94 mV\/mm\/s (100 mV\/in\/s) ±5% at 100 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.5 Hz to 2,000 Hz (270 to 120,000 cpm) ±3.0 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response (±0.9 dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6.0 Hz to 1,000 Hz (360 to 60,000 cpm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVelocity Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1,270 mm\/s (50 in\/s) peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransverse Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLess than 5% of axial sensitivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmplitude Linearity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±2% to 152 mm\/s (6 in\/s) peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Thread (00)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/2-20 UNF (Unified Fine Thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgency Approval (00)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo Approvals (For non-hazardous areas)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectrical Connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-pin Mil-C-5015 hermetically sealed, top exit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExcitation Voltage Required\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-22 Vdc to -30 Vdc (Constant current required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBias Current Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 mA to 10 mA maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLess than 2,400 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-54°C to +121°C (-65°F to +250°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e316L Stainless Steel, hermetically sealed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShock Limit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e49,050 m\/s² (5,000 g) peak maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.53 * 2.53 * 5.90 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.14 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eModel Configuration Explanation\u003c\/h3\u003e\n\u003cp\u003eThe part number \u003cstrong\u003e330500-00-00\u003c\/strong\u003e represents the core, un-adapted base specification of the Bently Nevada Velomitor platform. Each alphanumeric dash option defines specific mechanical installation threads and regulatory compliance frameworks:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e330500\u003c\/strong\u003e: The base model code for the Velomitor Piezo-Velocity Sensor family with internal signal integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e00\u003c\/strong\u003e: \u003cstrong\u003eMounting Adapter Option.\u003c\/strong\u003e Defines a flat base containing a standard \u003cstrong\u003e1\/2-20 UNF\u003c\/strong\u003e internal mounting thread. This option allows for direct stud mounting onto machines prepared with flat-faced counterbores or matching industrial adapter studs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e00\u003c\/strong\u003e: \u003cstrong\u003eAgency Approval Option.\u003c\/strong\u003e Designates \u003cstrong\u003eNo Approvals\u003c\/strong\u003e or safe-area deployment. This configuration is optimized for cost efficiency in industrial zones where explosive gases, flammable vapors, or combustible dust clouds are never present, omitting the added cost of Ex d, Ex ia, or NI regulatory stamps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cp\u003eThe 330500-00-00 Velomitor sensor is the preferred industry standard for casing vibration monitoring on medium-to-high speed rolling element bearing machinery, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Fans and Blowers:\u003c\/strong\u003e Continuous casing vibration tracking to detect progressive dirt build-up, blade erosion, and rotor aerodynamic unbalance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentrifugal and Axial Pumps:\u003c\/strong\u003e Real-time protection against structural cavitation damage, mechanical seal failures, and shaft misalignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectric Motors:\u003c\/strong\u003e Monitoring stator and bearing house housings for structural mounting looseness, soft foot conditions, and rotor bars distortion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling Tower Fans:\u003c\/strong\u003e Deployed on remote overhead gearboxes and fan hubs to monitor structural mechanics via long-run interconnect cables.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePaper and Pulp Rollers:\u003c\/strong\u003e Tracking roll bearing health and process line alignment under continuous, heavy structural loads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSystem Compatibility\u003c\/h3\u003e\n\u003cp\u003eTo build a fully operational vibration monitoring loop, the 330500-00-00 velocity sensor requires integration with matching field cables and industrial monitor processing modules:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Cable Assemblies:\u003c\/strong\u003e Typically paired with \u003cstrong\u003eBently Nevada 9571 series\u003c\/strong\u003e or \u003cstrong\u003e106765 series\u003c\/strong\u003e two-conductor shielded twisted pair (STP) cables fitted with a moisture-resistant molded boot connector to seal the Mil-C-5015 sensor pins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachinery Protection Systems:\u003c\/strong\u003e Direct connection to the \u003cstrong\u003eBently Nevada 3500\/42M Proximitor Seismic Monitor\u003c\/strong\u003e configured specifically for Velomitor inputs, or legacy 3300\/55 seismic vibration monitors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistributed I\/O and Condition Monitoring:\u003c\/strong\u003e Seamlessly interfaces with \u003cstrong\u003eBently Nevada Trendmaster Pro\u003c\/strong\u003e platforms, distributed scanning modules, or third-party continuous monitoring systems providing a -24Vdc, 2mA to 10mA constant current power loop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMechanical and Electrical Installation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Preparation:\u003c\/strong\u003e The mounting location must be machined flat to a surface finish of 0.8 micrometers (32 microinches) Ra with a minimum diameter of 26 mm. The spot face must be perpendicular to the axis of shaft rotation to ensure correct direction of vibration measurement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Stud Installation:\u003c\/strong\u003e Insert the 1\/2-20 UNF mounting stud into the prepared machinery housing. Torque the sensor onto the stud using a calibrated torque wrench. Do not exceed the maximum installation torque rating of \u003cstrong\u003e4.5 N·m (40 in·lb)\u003c\/strong\u003e to prevent internal crystal pre-load stress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrientation Versatility:\u003c\/strong\u003e Because this sensor utilizes a solid-state piezoelectric crystal rather than a hanging mechanical spring-coil mechanism, it can be mounted at any physical angle—vertical, horizontal, or inverted—without affecting measurement accuracy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Strain Relief:\u003c\/strong\u003e Run the field cable from the top Mil-C-5015 connector and secure it within a flexible conduit or structural cable clamps within 250 mm (10 inches) of the sensor head. This prevents whipping and cable strain from introducing false signal noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding Practice:\u003c\/strong\u003e To prevent ground loop noise from corrupting the low-level AC voltage signal, ensure the cable shield is isolated at the sensor head and grounded exclusively at the 3500 monitoring rack or local instrument junction box common ground terminal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Advantages\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid-State Reliability:\u003c\/strong\u003e By eliminating internal moving parts subject to mechanical wear, the piezo-velocity design provides a significantly longer operational lifetime compared to old-school electro-mechanical velocity pickups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrientation Independent:\u003c\/strong\u003e Provides complete installation flexibility. Performance remains stable across a 360-degree mounting envelope, simplifying site engineering layouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Integration Advantage:\u003c\/strong\u003e Performs acceleration-to-velocity integration directly within the micro-sealed internal capsule. This keeps the low-impedance AC voltage output protected from environmental radio-frequency and electromagnetic noise along the field run.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRugged Heavy-Duty Housing:\u003c\/strong\u003e Constructed from hermetically sealed 316L stainless steel, offering maximum resistance to washdown chemicals, continuous humidity, and corrosive industrial oils.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Frequency Envelope:\u003c\/strong\u003e Capable of tracking rotational vibrations down to 4.5 Hz, making it highly effective for slow-speed industrial fans, gear meshes, and balance-of-plant process machinery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification Summary\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eAvailability \u0026amp; Procurement\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e330500-00-00\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVelomitor Piezo-Velocity Sensor, 1\/2-20 UNF Flat Base Mount, No Approvals, Safe Area Configuration\u003c\/td\u003e\n\u003ctd\u003eFactory Stock Available \/ RFQ Online\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003e\u003ci\u003eProcurement Tip: For full machinery protection retrofits, always review your cable requirements. Order the matching 2-conductor shielded field cable with a molded Mil-C-5015 splash-proof boot connector alongside the sensor to guarantee an IP66\/IP67 rated field installation.\u003c\/i\u003e\u003c\/p\u003e\n\u003ch3\u003eLogistics and Shipping\u003c\/h3\u003e\n\u003cp\u003eIndustrial condition monitoring instrumentation requires specialized transport preparation to safeguard calibrated internal components:\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eProfessional Packaging Protocol:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEvery Bently Nevada 330500-00-00 sensor is placed into a fitted \u003cstrong\u003eanti-static industrial packaging shield\u003c\/strong\u003e to safeguard the sensitive internal signal integrating electronics from electrostatic hazards. The sensor is enclosed within a heavy-duty, double-wall corrugated outer shell with custom-cut, high-density shock protection foam inserts. This specialized design layout fully eliminates the risk of damage from drop shock, vibration resonance, and harsh transit handlings during global air or sea freight deliveries.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between a standard accelerometer and a Velomitor sensor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAn accelerometer outputs a signal proportional to raw acceleration (g or m\/s²). A Velomitor contains internal solid-state integrating electronics that automatically convert the acceleration data into a velocity signal (mV\/mm\/s or mV\/in\/s), which is often easier to interpret for tracking mid-frequency machinery faults.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 330500-00-00 model be used inside a Class I Division 1 hazardous zone?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The \"-00\" agency approval code indicates a \"No Approvals\" safe-area model. For hazardous locations with explosive gas or dust risks, you must order the appropriate certified configurations, such as the 330500-01-00 or 330500-02-00 options.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens if I exceed the 4.5 N·m installation torque limit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOver-torquing the sensor can distort the 316L stainless steel base plate or over-compress the internal piezoelectric crystal assembly. This permanently alters the sensor's calibration scale factor and may introduce measurement drift.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this sensor require a separate external transmitter module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The Velomitor outputs a low-impedance AC voltage directly from its internal amplifier. It connects straight to a vibration monitor rack module (like the Bently Nevada 3500\/42M) that supplies the necessary constant-current DC excitation power.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is a 1\/2-20 UNF mounting configuration chosen for this sensor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1\/2-20 UNF option is a rugged, North American and international standard for casing-mounted seismic sensors. It provides a highly stable mechanical connection capable of accurately transferring high-frequency casing vibrations to the internal crystal element.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I paint the housing of the Velomitor sensor after field installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is highly discouraged to paint the sensor body. Paint layers can insulate the sensor thermally, trap moisture around the hermetic glass-to-metal connector seal, and potentially mask mechanical defects or part numbering logs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I identify a failing or damaged 330500 velocity sensor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMonitor the Bias Output Voltage (BOV) at your monitoring rack. A normal Velomitor loop operating voltage sits between -12 Vdc and -14 Vdc. If the voltage moves close to 0 Vdc or -24 Vdc, it indicates an open\/short circuit in the field cable or a failure within the sensor's internal amplifier.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAre the internal components of the 330500-00-00 field-repairable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 330500-00-00 is a fully welded, hermetically sealed 316L stainless steel unit designed to prevent moisture and particulate entry. Once sealed at the factory, individual internal electronic modules or crystal elements cannot be opened or repaired in the field.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45518848196781,"sku":"330500-00-00","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/bently-nevada-330500-00-00-velomitor-piezo-velocity-sensor-heyrhlu2fyv.jpg?v=1766980367","url":"https:\/\/www.maxwellplc.com\/products\/bently-nevada-330500-00-00-velocity-sensors-velomitor","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}