{"product_id":"bently-nevada-190501-02-99-00-velocity-transducer-velomitor-ct-series","title":"Bently Nevada 190501-02-99-00 Velocity Transducer Velomitor CT Series","description":"\u003cp\u003eConfigured for low-frequency casing vibration velocity measurements on cooling towers and air-cooled heat-exchanger fan assemblies, the \u003cstrong\u003eBently Nevada 190501-02-99-00\u003c\/strong\u003e (\u003cstrong\u003e190501\u003c\/strong\u003e Velocity Transducer) provides direct physical\/electrical execution of dynamic vibration monitoring. This piezo-velocity sensor translates mechanical casing acceleration into a proportional analog velocity output signal for structural and machine casing analysis.\u003c\/p\u003e\n\u003ch3\u003ePart Number Configuration Details\u003c\/h3\u003e\n\u003cp\u003eThe part number 190501-02-99-00 represents a specific hardware configuration defined by the following options:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e190501\u003c\/strong\u003e: Base model designation for the Velomitor CT (Cooling Tower) Velocity Transducer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-02\u003c\/strong\u003e: Mounting Hardware Option, specifying a 3\/8-in 24 to 1\/2-in 20 mounting stud.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-99\u003c\/strong\u003e: Connection Option, designating a unit supplied with an integrated 32-foot (approx. 9.75 meters) cable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-00\u003c\/strong\u003e: Agency Approval Option, indicating no hazardous area agency approvals are certified for this specific build.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware 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\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e190501-02-99-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e8.3 x 3.5 x 3.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eLoop-powered, 2 to 10 mA constant current (bias voltage 10 to 14 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e3.94 mV\/mm\/s (100 mV\/in\/s) plus\/minus 5% at 25 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003eLow-frequency tuned, suitable for fan assemblies operating at or above 90 RPM (1.5 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Sensitivity\u003c\/td\u003e\n\u003ctd\u003e-8% to +5% typical variance across the operating temperature range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003e316L stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Resistance\u003c\/td\u003e\n\u003ctd\u003e100% condensing, non-submerged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Cable Length\u003c\/td\u003e\n\u003ctd\u003eSupports up to 305 meters (1000 feet) without signal degradation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eRotor Dynamics \u0026amp; Low-Frequency TSI Integration\u003c\/h3\u003e\n\u003cp\u003eOperating in cooling tower and heat-exchanger fan environments, the 190501-02-99-00 is engineered to capture low-speed rotor dynamics and casing vibrations. In Turbomachinery Instrumentation (TSI) setups, low-frequency fan rotation (typically 100 to 300 RPM) creates measurement challenges for standard piezo-velocity sensors due to rolling-element noise and poor low-end signal-to-noise ratios.\u003c\/p\u003e\n\u003cp\u003eTo overcome this, the Velomitor CT utilizes specialized internal integration electronics that filter high-frequency noise while preserving phase and amplitude integrity down to 1.5 Hz (90 RPM). When integrating this transducer into a continuous machinery protection system like the Bently Nevada 3500\/42M monitor, correct configuration of the channel sensor type is mandatory. The monitor must be programmed to match the 3.94 mV\/mm\/s scale factor to ensure accurate velocity tracking and to prevent false NOT OK or system fault status alerts caused by bias voltage drift.\u003c\/p\u003e\n\u003ch3\u003eShipping Package Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Bently Nevada 190501-02-99-00 Velomitor CT Velocity Transducer\u003c\/li\u003e\n\u003cli\u003e1 x Integrated 32-foot (approx. 9.75 meters) connection cable\u003c\/li\u003e\n\u003cli\u003e1 x Mounting stud (3\/8-in 24 to 1\/2-in 20 thread size)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation and Cable Routing Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMounting Surface Preparation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe sensor mounting surface must be flat, smooth, and clean to ensure solid mechanical coupling. Prepare a machined surface with a diameter of at least 30 mm to accommodate the sensor base.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThread Torque Specification\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMount the transducer to the prepared surface using the provided 3\/8-in 24 to 1\/2-in 20 mounting stud. Tighten the sensor body to the recommended installation torque of 13.5 N m (10 ft lb) to prevent signal loss from mechanical looseness.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCable Routing and Protection\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBecause this unit features an integrated 32-foot cable, ensure the cable is secured with conduit or cable trays over its entire run. Avoid routing the transducer cable parallel to high-voltage AC lines to prevent electromagnetic coupling and noise.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShield Grounding Method\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe integrated cable shield must be terminated at the monitor end (TSI common ground) only. Do not ground the shield at the transducer end; this prevents ground loops that introduce electrical interference into the vibration signal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the minimum operating speed of machinery that this transducer can monitor?\u003c\/p\u003e\n\u003cp\u003eThe sensor is designed to measure vibration on cooling towers and fan assemblies operating at or above 90 RPM (1.5 Hz frequency).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan the integrated 32-foot cable on this unit be cut to a shorter length?\u003c\/p\u003e\n\u003cp\u003eYes, the cable can be shortened. This is a constant-current, low-impedance velocity transducer, so shortening the cable does not affect the calibration scale factor.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs this velocity sensor suitable for permanent submersion in water?\u003c\/p\u003e\n\u003cp\u003eNo. While the 316L stainless steel housing resists 100% condensing humidity, the sensor is not rated for continuous underwater submersion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes this specific model (190501-02-99-00) carry ATEX explosion-proof certifications?\u003c\/p\u003e\n\u003cp\u003eNo. The \"-00\" suffix in the ordering code specifies the \"No Approvals\" option, meaning this unit is not certified for hazardous or explosive areas.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow is the transducer powered in a standard industrial setup?\u003c\/p\u003e\n\u003cp\u003eThe transducer is loop-powered by the machinery protection monitor, which supplies a constant current of 2 to 10 mA down the signal lines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat happens to the vibration readings if the mounting torque is too low?\u003c\/p\u003e\n\u003cp\u003eLow mounting torque creates high-frequency resonance at the mounting interface, which can cause reading distortion and attenuate the true low-frequency vibration signals.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan this sensor be mounted horizontally on the machine casing?\u003c\/p\u003e\n\u003cp\u003eYes, the piezo-velocity element inside the transducer is omnidirectional and operates accurately in both vertical and horizontal mounting orientations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow does temperature fluctuation affect the transducer's sensitivity?\u003c\/p\u003e\n\u003cp\u003eThe sensitivity varies typically between -8% and +5% across its entire rated operating temperature range of -40 to +85 deg C.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":46025235660973,"sku":"190501-02-99-00","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/190501-00-00-003_d7a5d085-299a-4d77-8ef9-c7afb7f3046a.jpg?v=1784273210","url":"https:\/\/www.maxwellplc.com\/products\/bently-nevada-190501-02-99-00-velocity-transducer-velomitor-ct-series","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}