Bently Nevada 16699-20-05-03 Velomitor Seismic Velocity Probe Full Product Specification
The 16699-20-05-03 is a factory-calibrated Velomitor seismic velocity transducer developed by Bently Nevada under Baker Hughes group, belonging to the classic 16699 series magnetoelectric velocity probe product lineup, specially engineered for non-contacting casing vibration continuous measurement of all kinds of rotating industrial machinery. Different from eddy current proximity probes for shaft surface measurement, this unit is installed directly on equipment housing, converting mechanical casing vibration speed into standard alternating electrical signals for subsequent monitoring modules to calculate vibration amplitude, used for long-term online equipment health monitoring and protection interlock. Widely deployed in thermal power, petrochemical, metallurgy and water treatment industries on fans, pumps, compressors and small steam turbines to capture casing vibration caused by bearing wear, rotor unbalance and casing loose faults, complying with API 670 international machinery protection standard requirements. The suffix coding of part number defines core parameters: 20 stands for overall cable length specification, 05 refers to internal coil and impedance configuration, 03 indicates customized mounting thread and outer shell structure for field installation.
Description
Bently Nevada 16699-20-05-03 Velomitor Seismic Velocity Probe Full Product Specification
1. Product Overview
The 16699-20-05-03 is a factory-calibrated Velomitor seismic velocity transducer developed by Bently Nevada under Baker Hughes group, belonging to the classic 16699 series magnetoelectric velocity probe product lineup, specially engineered for non-contacting casing vibration continuous measurement of all kinds of rotating industrial machinery. Different from eddy current proximity probes for shaft surface measurement, this unit is installed directly on equipment housing, converting mechanical casing vibration speed into standard alternating electrical signals for subsequent monitoring modules to calculate vibration amplitude, used for long-term online equipment health monitoring and protection interlock. Widely deployed in thermal power, petrochemical, metallurgy and water treatment industries on fans, pumps, compressors and small steam turbines to capture casing vibration caused by bearing wear, rotor unbalance and casing loose faults, complying with API 670 international machinery protection standard requirements. The suffix coding of part number defines core parameters: 20 stands for overall cable length specification, 05 refers to internal coil and impedance configuration, 03 indicates customized mounting thread and outer shell structure for field installation.
2. Core Working Principle & Internal Structure
Built with high-precision moving-coil magnetoelectric structure inside the sealed metal housing, the fixed permanent magnet forms stable magnetic field, while internal induction coil follows equipment casing vibration to cut magnetic field lines and output proportional alternating voltage signal directly corresponding to vibration velocity value without external excitation power supply. The whole probe is fully sealed with epoxy filling inside shell to isolate dust, oil mist and moisture erosion from industrial field environment, eliminating extra signal conditioning circuit on site. Internal damping structure is preset to restrain abnormal resonant signal within the transducer itself, ensuring stable linear output in specified working frequency band.
3. Electrical & Measuring Performance Parameters
The transducer outputs standard velocity signal with inherent sensitivity calibrated at factory; nominal sensitivity matches classic Velomitor specification, designed for velocity measurement unit in mm/s or inch/s. Effective measurable frequency response range covers from 4.5Hz up to 2000Hz, fully covering normal rotating frequency and multiple harmonic vibration frequency of conventional industrial rotating equipment. Internal coil fixed impedance is set per 05 suffix parameter configuration, matching input impedance requirement of Bently 3300, 3500 series rack monitoring modules and 1900 series standalone equipment monitors directly without intermediate matching converter. Output signal is low-impedance alternating analog signal with strong anti-interference capability against nearby frequency converter and high-power cable electromagnetic clutter. Typical measuring linear error is controlled within ±3% of full measuring range under rated working condition after factory calibration.
4. Cable & Mechanical Installation Specification
The 20 digit in part number represents fixed integral armored cable length of the transducer, the outer cable adopts stainless steel spiral armor protection to resist mechanical pull, abrasion and sharp object scratch during cabinet wiring and equipment maintenance, inner insulated wire is resistant to high temperature and industrial oil corrosion. Probe sensing head is equipped with standard industrial mounting thread corresponding to suffix 03 configuration, supporting direct threaded locking installation on prefabricated mounting studs of equipment casing; no complicated bracket processing required for field mounting. Overall probe shell is made of high-strength aluminum alloy with anti-rust surface treatment, compact structure suitable for narrow installation space on fan bearing pedestal and pump housing.
5. Environmental Working Condition Index
Permitted continuous operating ambient temperature ranges from -35℃ to +85℃, short-term intermittent working temperature can reach up to +95℃ to adapt high-temperature bearing housing environment of steam auxiliary equipment. Allowable relative working humidity is 5%~98% non-condensing, capable of stable running in oil mist, slight corrosive gas and dusty workshop environment. Storage temperature scope covers -40℃ to +100℃ for long-term spare part storage under warehouse normal condition; the product passes CE electromagnetic compatibility certification and industrial shock resistance test to withstand slight mechanical vibration impact during equipment operation.
6. Matching System & Signal Output Application
Output signal of 16699-20-05-03 can be directly wired to Bently 3500/42, 3300/44 vibration monitoring modules inside rack TSI system as well as 1900 series multi-parameter standalone monitors. After receiving velocity signal, back-end monitor converts signal into vibration displacement or acceleration value via internal software algorithm to set up hierarchical Alert pre-alarm and Danger shutdown threshold. Besides access to centralized DCS/SCADA system via monitor’s 4-20mA analog output, raw alternating signal from probe can also be accessed by portable vibration data collector for offline spectrum analysis and regular equipment fault diagnosis. Built-in open/short circuit detection logic of matched monitor can automatically identify probe cable breakage and internal coil damage fault and trigger corresponding fault alarm.
7. Typical Industrial Application Scope
Primary application covers induced draft fan, forced draft fan and feed water pump in thermal power plant; centrifugal pump, process compressor and stirring equipment in petrochemical refining plant; sintering fan and exhaust blower in metallurgical smelting workshop; municipal sewage pump and circulating water pump in environmental protection water treatment project. It serves as core casing vibration measuring component for critical auxiliary rotating equipment, replacing scattered vibration switch and separate vibration transmitter to realize unified online monitoring of equipment mechanical status and emergency protection interlock.
8. Factory Inspection & After-sales Warranty Regulation
Every finished 16699-20-05-03 transducer completes full frequency point sensitivity calibration, high-low temperature cycle aging test and sealing tightness inspection before factory delivery to guarantee consistent output performance of each unit. Standard original manufacturer warranty period is twelve months calculated from delivery date; within valid warranty period, free maintenance or product replacement is available for faults caused by inherent manufacturing defects under specified installation and working environment. Damage induced by artificial over-bending cable, wrong wiring, mechanical impact extrusion, chemical corrosion and over-temperature misuse is excluded from free warranty scope.
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