{"product_id":"bently-nevada-330500-03-cn-velomitor-piezo-velocity-sensor","title":"Bently Nevada 330500-03-CN Velomitor Piezo-velocity Sensor","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eMeasuring casing vibration velocity directly on rotating machinery, the \u003cstrong\u003eBently Nevada 330500-03-CN\u003c\/strong\u003e integrates a rugged piezoelectric accelerometer with an internal integration circuit to output a true velocity signal. This design eliminates the requirement for external signal integration at the monitoring system, providing a robust and less noise-susceptible \u003cstrong\u003evelocity output\u003c\/strong\u003e directly from the sensor casing. The device is housed in hermetically sealed stainless steel, engineered specifically to withstand severe, high-humidity industrial environments. Standard implementation incorporates a \u003cstrong\u003e1\/4-28 UNF\u003c\/strong\u003e mounting thread and country-specific agency certifications, ensuring compliance with local plant safety standards.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePiezoelectric Sensing Element:\u003c\/strong\u003e Incorporates a solid-state internal integrator to output a clean velocity waveform rather than raw acceleration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHermetic Seal:\u003c\/strong\u003e Complete 316L stainless steel enclosure prevents ingress of moisture, oils, and chemical contaminants.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo-Pin Mil-C-5015 Connector:\u003c\/strong\u003e Top-exit standard industrial connection interface minimizes installation footprint.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrostatic Shielding:\u003c\/strong\u003e Internal Faraday shield isolates the sensing circuitry from electrostatic interference and electromagnetic fields.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748;\"\u003e\n  \u003cli\u003eCasing vibration measurements on steam and gas turbine bearings.\u003c\/li\u003e\n  \u003cli\u003eReal-time casing velocity monitoring on balance-of-plant machinery including pumps, draft fans, and air compressors.\u003c\/li\u003e\n  \u003cli\u003eIndustrial gearbox casing diagnostic monitoring.\u003c\/li\u003e\n  \u003cli\u003ePaper machine dryer roll bearings and harsh wet-end industrial processing zones.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications Table\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #cbd5e0;\"\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eSpecification Value\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eBently Nevada\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e330500-03-CN\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eSensor Type\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePiezo-velocity (Velomitor)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eMounting Thread Option\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e1\/4 - 28 UNF (Option 03)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eAgency Approval\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eCN (Country-specific hazardous area certifications)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eConnection Interface\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e2-pin MIL-C-5015 receptacle\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eCasing Material\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eStainless Steel\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eOperating Bias Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eNominally -12 VDC (relative to common)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eNet Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.142 kg (0.31 lbs)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e1.50 kg (3.30 lbs)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eUnited States (U.S.A.)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #cbd5e0;\"\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eConnector Pin\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eFunction \/ Circuit Assignment\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003ePin A\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eSignal \/ Power (Bias and dynamic AC velocity signal)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003ePin B\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eSignal Return \/ Common\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eShield \/ Shell\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eCase ground (electrically isolated from internal signal pins)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e330500-03-CN\u003c\/strong\u003e is drop-in backward compatible with older Bently Nevada velocity transducers requiring standard 1\/4-28 UNF casing mounting. Always verify monitor channel configuration; when replacing older electro-mechanical velocity sensors (like the 9200 series) with the 330500 piezo-velocity sensor, you must switch the monitor card jumper or software settings from \"Seismic\" (self-generating) to \"Velomitor\" (powered -24 VDC constant current) to prevent a transducer OK limit fault.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp\u003eBecause the Velomitor utilizes an internal piezoelectric design, rapid ambient temperature variations can induce a transient thermal shock. This thermal expansion or contraction of the crystal mimics low-frequency vibration, triggering spurious \"High Velocity\" alarms. Avoid mounting the sensor directly opposite uninsulated steam pipe flanges, steam leaks, or cooling vents. If thermal transients are unavoidable, install a heat-insulating boot over the sensor body.\u003c\/p\u003e\n\n\u003ch3\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp\u003eAlways utilize 2-conductor shielded twisted-pair cabling (such as Bently Nevada 9571) for the signal run. To eliminate ground loops, terminate the cable shield \u003cstrong\u003eonly\u003c\/strong\u003e at the monitoring system \/ cabinet terminal strip. Cut the shield flush and insulate it with heat-shrink at the sensor's MIL connector end. Ensure the sensor mounting surface is machined flat to a surface finish of 0.8 micrometers (32 microinches) Ra to guarantee precise high-frequency mechanical transmission.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cstrong style=\"color: #9b2c2c; display: block; margin-bottom: 0.5rem;\"\u003eCRITICAL WARNING:\u003c\/strong\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0;\"\u003ePrior to starting the installation, ensure the target machinery is completely shut down, isolated, and locked out\/tagged out (LOTO). Do not exceed the maximum mounting torque specification of 4.5 Nm (40 in-lb). Over-torqueing can cause permanent damage to the internal piezoelectric crystal assembly or strip the 1\/4-28 thread adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"display: flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; min-width: 32px; height: 32px; border-radius: 50%; font-weight: bold;\"\u003e1\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003e\n      \u003cstrong\u003ePrepare Mounting Spot:\u003c\/strong\u003e Drill and tap a perpendicular hole to a depth of at least 6 mm (0.25 inches) using the 1\/4-28 UNF specification. Spot-face the surface to ensure complete, flat contact.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"display: flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; min-width: 32px; height: 32px; border-radius: 50%; font-weight: bold;\"\u003e2\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003e\n      \u003cstrong\u003eApply Coupling Compound:\u003c\/strong\u003e Spread a thin, uniform layer of silicone grease or acoustic coupling fluid on the mating surface to optimize mechanical energy transfer.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"display: flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; min-width: 32px; height: 32px; border-radius: 50%; font-weight: bold;\"\u003e3\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003e\n      \u003cstrong\u003eTorque the Sensor:\u003c\/strong\u003e Thread the sensor into the mounting adapter and tighten using a calibrated torque wrench. Apply exactly 4.5 Nm (40 in-lb) of torque.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"display: flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; min-width: 32px; height: 32px; border-radius: 50%; font-weight: bold;\"\u003e4\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003e\n      \u003cstrong\u003eConnect \u0026amp; Secure Cable:\u003c\/strong\u003e Attach the MIL-C-5015 cable connector. Provide a drip loop in the cable immediately exiting the sensor, and secure the conduit or cable armor to the machine housing to prevent whipping or cable-induced strain.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52668299215211,"sku":"330500-03-CN","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/330500-03-CN-nrpnrfelu3g_6955a115-908e-405f-8b3c-f333f6e4febb.jpg?v=1765520494","url":"https:\/\/www.plcprotech.com\/products\/bently-nevada-330500-03-cn-velomitor-piezo-velocity-sensor","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}