{"product_id":"330500-00-04-bently-nevada-330500-series-piezo-velocity-sensor","title":"330500-00-04 Bently Nevada 330500 Series Piezo-Velocity Sensor","description":"\u003cp\u003eConfigured for casing vibration velocity measurements in turbomachinery protection systems, the Bently Nevada 330500-00-04 (\u003cstrong\u003e330500\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePiezo-Velocity Sensor\u003c\/strong\u003e) provides direct physical-to-electrical execution by converting structural vibration into a low-impedance voltage output. The device utilizes internal piezoelectric crystals and integrated charge-amplifier electronics to deliver a continuous, analog waveform proportional to the absolute velocity of the machine housing.\u003c\/p\u003e\n\u003ch3\u003ePart Number Nomenclature\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBase Model:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e330500 (Piezo-Velocity Sensor)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMounting Thread Option (-00):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1\/4-28 UNF top-mount, stud options.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAgency Approval Option (-04):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMultiple Approvals (CSA, ATEX, IECEx) for hazardous areas.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Parameters\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\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\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e330500-00-04\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBently Nevada\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUnited States\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.14 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShipping Dimensions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e125 mm x 100 mm x 75 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-54 deg C to +121 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eConstant current excitation: 2 mA to 10 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\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 percent\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 5.0 kHz +\/-3.0 dB; 6.0 Hz to 2.5 kHz +\/-0.9 dB\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAmplitude 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\u003eResonant Frequency\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eGreater than 12 kHz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eRotor Dynamics and Signal Integrity\u003c\/h3\u003e\n\u003cp\u003eThe 330500-00-04 interfaces directly with the Bently Nevada 3500\/42M or 3500\/44M monitors to evaluate rotor dynamics through casing vibration parameters. To ensure cross-talk suppression and eliminate electrical noise interference from surrounding industrial machinery, the sensor architecture employs an isolated internal Faraday shield. The case is electrically isolated from the internal electronics to prevent ground loops. In structural monitoring matrices where eddy-current probe scaling handles relative shaft motion, this piezo-velocity element fills the high-frequency absolute casing vibration vectors, executing precise synchronous and asynchronous fault isolation.\u003c\/p\u003e\n\u003ch3\u003ePackaging and Kit Content\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Bently Nevada 330500-00-04 Piezo-Velocity Sensor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x 1\/4-28 to 1\/4-28 mounting stud\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Calibration certificate verifying sensitivity and frequency limits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Installation instruction datasheet\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMechanical Installation and Grounding Protocols\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSurface Preparation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMachine the mounting surface to a flatness of 0.03 mm or better with a surface finish of 0.8 micrometers Ra.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTorque Specifications:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTorque the sensor to exactly 4.5 N-m (40 in-lb) using the supplied mounting stud. Incorrect torque alters the high-frequency resonant response.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCabling Constraints:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUtilize a 2-pin twisted, shielded cable (such as Bently Nevada 9571 or 46123). Route cables through grounded, rigid metal conduit to minimize mechanical whipping and electromagnetic noise.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShield Grounding:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTerminate the cable shield only at the monitor end (3500 rack). Leave the shield floating and isolated at the sensor end to prevent ground loop currents.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 330500-00-04 sensor be hot-swapped while the monitoring system is live?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The sensor can be disconnected or reconnected to an active 3500\/42M monitor channel without causing damage to the channel card or disrupting adjacent active monitoring loops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the minimum operating bias voltage expected at the monitor terminal?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe sensor operates with a nominal bias voltage of 10 VDC to 12 VDC. A bias voltage drifting below 7 VDC or rising above 16 VDC indicates a wiring fault or sensor element failure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the 330500 handle cross-axis sensitivity?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCross-axis sensitivity is limited to less than 5 percent of the main axis sensitivity, preventing perpendicular structural vibrations from distorting primary axial measurements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs external power required for the 330500-00-04?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo external DC power supply is directly wired. The sensor derives its power from the constant current source (2 to 10 mA) provided internally by the connected Bently Nevada monitor card.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum cable length supported without signal degradation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe sensor can drive up to 305 meters of approved shielded cable to the monitor rack without experiencing significant high-frequency attenuation or phase shift.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do temperature extremes affect the sensor's sensitivity?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe internal charge amplifier compensates for temperature variations, keeping the sensitivity drift within +\/-5 percent across the entire rated operating range of -54 deg C to +121 deg C.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan this velocity sensor measure static or DC positions like a proximity probe?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Due to its piezoelectric design, it cannot measure static displacement or zero-frequency events. The lower frequency processing cutoff limit is fixed at 4.5 Hz.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mounting thread orientation is required for proper operation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe sensor can be oriented at any angle (vertical, horizontal, or inverted) without affecting its accuracy, provided it is rigidly torqued to the target surface.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45518835318957,"sku":"330500-00-04","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/bently-nevada-330500-00-04-piezo-velocity-sensor-hf5zhusdwd0.jpg?v=1766980006","url":"https:\/\/www.maxwellplc.com\/ru\/products\/330500-00-04-bently-nevada-330500-series-piezo-velocity-sensor","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}