{"product_id":"bently-nevada-330750-80-05-high-temp-velomitor-system","title":"Bently Nevada 330750-80-05 High Temp Velomitor System","description":"\u003ch3\u003eEngineering Overview: Extreme Thermal Vibration Sensing\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #c0392b;\"\u003e330750-80-05\u003c\/span\u003e\u003c\/strong\u003e High Temperature Velomitor System by \u003cstrong\u003eBently Nevada\u003c\/strong\u003e is engineered for monitoring rotating equipment in environments where standard sensors fail. This system delivers precise velocity measurements in surface temperatures reaching 400°C (752°F). Utilizing a hermetically sealed 300-series stainless steel housing and an integral hardline cable, this sensor is the industry standard for high-heat applications like gas turbines and exhaust-adjacent monitoring points.\u003c\/p\u003e\n\u003ch3\u003eConfiguration Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe following table outlines the technical parameters for the \u003cstrong\u003e\u003cspan style=\"color: #c0392b;\"\u003e330750-80-05\u003c\/span\u003e\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e 330750 (High Temperature Velomitor System)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Length (AA=80):\u003c\/strong\u003e 8.0 Meters (26.2 ft)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApprovals (BB=05):\u003c\/strong\u003e Multiple Approvals (CSA, ATEX, and IECEx)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB’s Insight\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #c0392b;\"\u003e330750-80-05\u003c\/span\u003e\u003c\/strong\u003e is technically unmatched for \"hot-side\" casing vibration. Unlike piezoelectric sensors that require remote charge amplifiers, this system integrates the electronics in a temperature-rated zone while the sensing head survives the heat soak. We recommend this for operators managing frame-heavy gas turbines where exhaust gas temperatures frequently exceed standard sensor tolerances. Its stability (±5% sensitivity) makes it ideal for long-term trend analysis in predictive maintenance programs.\u003c\/p\u003e\n\u003ch3\u003eApplications, Diagnostics \u0026amp; Logistics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable Equipment:\u003c\/strong\u003e Heavy-duty gas turbines, steam turbine casings, high-temperature exhaust fans, and process heaters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostic Capability:\u003c\/strong\u003e Capable of detecting structural resonance and blade-pass vibration signatures up to 2 kHz. The system provides a robust -12V DC bias, allowing for quick validation of sensor health during routine loop checks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12-month quality assurance guarantee.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping:\u003c\/strong\u003e Expedited global transit via FedEx, UPS, or DHL; 24–48 hour dispatch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eExpert Frequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is a hardline cable required instead of a standard flexible connector?\u003c\/strong\u003e\u003cbr\u003eFlexible polymer jackets melt at temperatures above 150°C. The integral hardline cable is designed to withstand the extreme 400°C ambient temperature near the mounting surface without insulating breakdown.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat precautions are necessary when routing the cable away from the hot zone?\u003c\/strong\u003e\u003cbr\u003eThe hardline section must be supported to prevent mechanical stress at the cable-to-sensor junction. The minimum bend radius of 51mm (2in) must be respected to avoid internal conductor fatigue.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I verify the Velomitor is functioning correctly while the machine is offline?\u003c\/strong\u003e\u003cbr\u003eMeasure the bias voltage at the monitoring rack. A reading of -12V DC (±2V) indicates the internal electronics are powered and functional. A reading near zero volts indicates a short or power supply failure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I install this in a non-protected outdoor environment?\u003c\/strong\u003e\u003cbr\u003eWhile the case is hermetically sealed, Bently Nevada recommends a protective enclosure or conduit to prevent direct environmental debris or moisture from impacting the cable transition point.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is there a temperature range difference between the sensing head and the electronics?\u003c\/strong\u003e\u003cbr\u003eThe sensing head handles the primary heat load, while the electronic module (usually located further along the cable) is restricted to 121°C. Always ensure the electronics enclosure is mounted in a lower-temperature zone to maintain system longevity.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/330750.png?v=1779872770\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013997912246,"sku":"330750-80-05","price":155.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada330750_2.jpg?v=1779872836","url":"https:\/\/www.plcsparehub.com\/products\/bently-nevada-330750-80-05-high-temp-velomitor-system","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}