Bently Nevada 16699-03-05-02 Velomitor Seismic Velocity Transducer Product Specification
The 16699-03-05-02 is a factory pre-calibrated self-generating magnetoelectric casing vibration sensor belonging to Bently Nevada classic 16699 Velomitor series under Baker Hughes, engineered for continuous absolute vibration measurement on bearing pedestals and machine housings of various rotating industrial equipment. The segmented part number defines customized configuration parameters respectively: the first suffix “03” stands for fixed integrated armored cable length specification with short integrated armored cable design for compact installation space; the second suffix “05” refers to internal coil winding structure and fixed impedance parameter matched for standard Bently monitoring modules; the third suffix “02” specifies customized outer housing dimension and standard mounting thread size for field threaded fixation. Different from eddy current proximity probes measuring relative shaft vibration, this transducer is directly fastened on equipment casing and converts mechanical vibration velocity into proportional alternating voltage signal without external excitation power supply, fully complying with API 670 international machinery protection standard and widely applied in thermal power, petrochemical refining, metallurgy and water treatment industries for induced draft fans, feedwater pumps, centrifugal compressors and small auxiliary steam turbines to monitor mechanical faults including rotor unbalance, shaft misalignment and bearing wear deterioration.
2. Working Principle and Internal Structure
This velocity transducer adopts mature enclosed moving-coil magnetoelectric construction fully encapsulated inside high-strength metal housing. A fixed high-performance permanent magnet builds stable uniform magnetic field inside the sealed cavity, while suspended induction coil moves synchronously with casing vibration to cut magnetic field lines and output AC voltage signal directly proportional to real-time vibration velocity value, eliminating extra external signal conditioning power source requirement. Inner cavity is completely filled with epoxy resin for full sealing against industrial floating dust, oil mist and condensed moisture; built-in precision mechanical damping structure effectively restrains inherent self-resonance interference of internal components to guarantee stable linear signal output within rated working frequency band. The integral sealed structure avoids internal core component damage caused by harsh on-site corrosive environment and extends long-term reliable service life under continuous running condition.
Description
Bently Nevada 16699-03-05-02 Velomitor Seismic Velocity Transducer Product Specification
1. Product Overview
The 16699-03-05-02 is a factory pre-calibrated self-generating magnetoelectric casing vibration sensor belonging to Bently Nevada classic 16699 Velomitor series under Baker Hughes, engineered for continuous absolute vibration measurement on bearing pedestals and machine housings of various rotating industrial equipment. The segmented part number defines customized configuration parameters respectively: the first suffix “03” stands for fixed integrated armored cable length specification with short integrated armored cable design for compact installation space; the second suffix “05” refers to internal coil winding structure and fixed impedance parameter matched for standard Bently monitoring modules; the third suffix “02” specifies customized outer housing dimension and standard mounting thread size for field threaded fixation. Different from eddy current proximity probes measuring relative shaft vibration, this transducer is directly fastened on equipment casing and converts mechanical vibration velocity into proportional alternating voltage signal without external excitation power supply, fully complying with API 670 international machinery protection standard and widely applied in thermal power, petrochemical refining, metallurgy and water treatment industries for induced draft fans, feedwater pumps, centrifugal compressors and small auxiliary steam turbines to monitor mechanical faults including rotor unbalance, shaft misalignment and bearing wear deterioration.
2. Working Principle and Internal Structure
This velocity transducer adopts mature enclosed moving-coil magnetoelectric construction fully encapsulated inside high-strength metal housing. A fixed high-performance permanent magnet builds stable uniform magnetic field inside the sealed cavity, while suspended induction coil moves synchronously with casing vibration to cut magnetic field lines and output AC voltage signal directly proportional to real-time vibration velocity value, eliminating extra external signal conditioning power source requirement. Inner cavity is completely filled with epoxy resin for full sealing against industrial floating dust, oil mist and condensed moisture; built-in precision mechanical damping structure effectively restrains inherent self-resonance interference of internal components to guarantee stable linear signal output within rated working frequency band. The integral sealed structure avoids internal core component damage caused by harsh on-site corrosive environment and extends long-term reliable service life under continuous running condition.
3. Electrical and Metrological Performance Parameters
All units complete strict factory sensitivity calibration before delivery with nominal sensitivity complying with standard Velomitor specification, output vibration velocity signal marked in mm/s or inch/s measurement unit. Its effective working frequency response ranges from 4.5Hz up to 2000Hz, fully covering fundamental rotational frequency and multiple harmonic vibration frequency of conventional industrial rotating machinery. Internal coil impedance is preset per “05” suffix parameter setting to realize direct electrical matching with Bently 3300/44, 3500/42 seismic monitoring modules and 1900 series standalone vibration monitors without intermediate impedance conversion adapter circuit. The low-impedance analog AC output features outstanding anti-electromagnetic interference capacity to resist clutter from nearby frequency converters and high-voltage power cables; full-scale measuring linear error is controlled within ±3% under nominal rated working environment after professional calibration. Matched backend monitoring equipment supports automatic open-circuit and short-circuit diagnosis for sensor cable and internal coil to trigger corresponding fault warning promptly once wire breakage or coil failure occurs.
4. Cable and Mechanical Installation Specification
Suffix “03” corresponds to short fixed-length stainless steel spiral armored outgoing cable of the transducer. External stainless steel armor structure prevents cable tensile damage, surface abrasion and sharp object puncture during field wiring and routine equipment maintenance; inner core insulation wire is formulated with high-temperature and oil-resistant material to adapt high-heat surrounding environment near hot bearing housings. The “02” suffix defines sensing head outer shell size and industrial standard installation thread, enabling direct screwing locking onto prefabricated mounting studs of equipment bearing base without extra customized mounting brackets. The whole transducer housing is manufactured from anti-rust treated high-strength aluminum alloy with compact outline, perfectly suitable for narrow installation space on small-sized pump and fan bearing pedestals.
5. Environmental Operating Specifications
Permitted continuous operating ambient temperature covers -35℃ ~ +85℃; short-time intermittent peak working temperature can reach +95℃ to fit high-temperature auxiliary steam equipment casing condition. Applicable working relative humidity ranges 5% to 98% under non-condensing status, maintaining stable output performance in dusty workshop, oil mist atmosphere and mild corrosive gas environment. The allowable spare part storage temperature spans from -40℃ to +100℃ for long-term warehouse stocking. The product has passed CE electromagnetic compatibility certification and industrial anti-shock mechanical test to withstand incidental collision and vibration impact during equipment overhaul and regular operation.
6. System Matching and Practical Application Scenarios
Original alternating velocity signal from 16699-03-05-02 can be directly wired into Bently 3500 rack-mounted TSI monitoring system, legacy 3300 series vibration modules and independent 1900 multi-function machinery monitors. Back-end monitoring hardware converts raw velocity signal into displacement or acceleration data via built-in operational algorithm and configures two-stage Alert pre-alarm and Danger shutdown threshold for equipment safety interlock protection. Processed measurement data can be uploaded to central DCS and SCADA control system through monitor’s 4-20mA analog output port; meanwhile unprocessed original sensor signal is available for portable vibration data collector access to conduct offline spectrum analysis and periodic predictive equipment fault diagnosis. Typical application sites include boiler auxiliary fans and feed pumps in thermal power plants, process pumps and reciprocating compressors in petrochemical factories, sintering exhaust blowers in metallurgical workshops and circulating water pumps for municipal environmental protection projects.
7. Factory Inspection and After-sales Warranty Terms
Every finished transducer undergoes full-frequency point sensitivity calibration, high-low temperature cyclic aging test and overall sealing tightness inspection before factory shipment to guarantee consistent batch product performance. Original manufacturer standard warranty period lasts twelve months calculated from product delivery date; free repair or replacement service is available for failures induced by inherent manufacturing defects under specified installation and normal working environment. Any damage caused by artificial excessive cable bending, incorrect wiring connection, mechanical extrusion impact, chemical medium corrosion and over-temperature misuse is excluded from free warranty coverage.
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