Bently Nevada 3000-00-18-36-02 Eddy Current Proximity Probe Product Specification
3000-00-18-36-02 is factory pre-calibrated eddy-current proximity probe from Bently Nevada 3000 series, designed per API670 industrial standard for rotating machinery TSI supervision and protection system. When combined with factory-certified matching extension cable and compatible proximitor transducer, the product forms a complete closed non-contact clearance measurement circuit. It converts tiny gap changes between flush probe sensing surface and metallic rotating shaft into stable linear DC voltage output, realizing continuous online measurement of radial shaft vibration, axial thrust displacement and Keyphasor rotational speed for critical rotating equipment including steam turbines, centrifugal compressors, generator sets, feedwater pumps and industrial blowers used in thermal power, petrochemical refining and metallurgical industries. Every finished probe passes factory capacitance matching test, continuity inspection, high-low temperature cycling aging and connector sealing durability test before delivery to ensure stable linearity and accurate measurement performance under complicated industrial environments with fluctuating temperature, heavy lubricating oil mist and complex electromagnetic interference. Measured analog signals are transmitted to Bently 3500 monitoring rack, field DCS or PLC control system to trigger pre-alarm and emergency trip interlock for avoiding destructive mechanical failures of production units.
Description
Bently Nevada 3000-00-18-36-02 Eddy Current Proximity Probe Product Specification
1. Product Overview
3000-00-18-36-02 is factory pre-calibrated eddy-current proximity probe from Bently Nevada 3000 series, designed per API670 industrial standard for rotating machinery TSI supervision and protection system. When combined with factory-certified matching extension cable and compatible proximitor transducer, the product forms a complete closed non-contact clearance measurement circuit. It converts tiny gap changes between flush probe sensing surface and metallic rotating shaft into stable linear DC voltage output, realizing continuous online measurement of radial shaft vibration, axial thrust displacement and Keyphasor rotational speed for critical rotating equipment including steam turbines, centrifugal compressors, generator sets, feedwater pumps and industrial blowers used in thermal power, petrochemical refining and metallurgical industries. Every finished probe passes factory capacitance matching test, continuity inspection, high-low temperature cycling aging and connector sealing durability test before delivery to ensure stable linearity and accurate measurement performance under complicated industrial environments with fluctuating temperature, heavy lubricating oil mist and complex electromagnetic interference. Measured analog signals are transmitted to Bently 3500 monitoring rack, field DCS or PLC control system to trigger pre-alarm and emergency trip interlock for avoiding destructive mechanical failures of production units.
2. Part Number Coding Definition
The five-segment part number follows Bently standardized modular coding rules with fixed parameter definition for each section:3000 stands for core series of proximity probe with 11mm outer probe body diameter and standard M14×2 mounting thread, factory fixed sensitivity of 3.94V/mm and fully compatible with 3300 and 3500 series proximitors.00 indicates zero exposed unthreaded sensing tip; the detection face is flush with the end plane of mounting thread without protruding bare tip, suitable for flush installation on bearing housings that forbid probe extension into internal oil cavity.18 defines total stainless steel probe housing length of 180mm, tailored for standard shallow mounting holes on most conventional bearing pedestals with limited installation depth.36 represents pre-attached factory-calibrated integral probe cable length of 3.6 meters; this fixed length is included in overall loop capacitance calculation together with extension cable and proximitor, arbitrary on-site cutting or mismatched cable replacement will break preset impedance matching and cause measurement zero drift and non-linear error.02 denotes standard configuration: non-armored fluoropolymer outer cable jacket equipped with gold-plated standard ClickLoc stainless steel threaded connector at cable end, without outer metal armor or customized modified plug structure. All dimensional and electrical parameters are fixed after factory production and cannot be altered arbitrarily on site.
3. Mechanical and Raw Material Specifications
Internal sensing coil core is made of high-stability precision alloy wrapped by high-temperature resistant PPS insulating material with stable dielectric constant, excellent oil resistance and anti-corrosion property to keep fixed capacitance under varying ambient temperature and persistent workshop oil mist. Probe outer housing is precision CNC-machined solid stainless steel with outstanding anti-impact, rust-proof and high-temperature steam resistant performance for long-term installation close to hot-running equipment casing. Internal multi-strand oxygen-free copper conductors reduce high-frequency signal attenuation and improve anti-RFI interference ability. Intermediate fluoropolymer insulation maintains steady dielectric property matching eddy-current working requirements. Outer cable jacket is wear-resistant thermoplastic elastomer to defend against field scratch, dust accumulation and lubricant soaking erosion. The tail stainless steel connector is fitted with built-in elastic rubber sealing ring to block moisture, fine metal scraps and hydraulic oil from penetrating into inner wiring after mating with matched extension cable terminal. The integrated cable keeps proper flexibility for convenient field wiring within specified minimum bending radius without insulation cracking.
4. Electrical Performance and Environmental Working Parameters
This proximity probe shall be used with matched proximitor powered by negative DC supply ranging from -17.5VDC to -26VDC. The full measuring loop consisting of probe, certified extension cable and supporting proximitor retains factory preset calibrated sensitivity of 3.94V/mm, with effective frequency response ranging from 0Hz to 10kHz to cover both slow static axial thrust displacement tracking and high-frequency dynamic radial vibration sampling of high-speed rotating rotors.
Permitted continuous operating ambient temperature ranges from -40℃ to +120℃ for low-temperature outdoor installation and high-temperature layout near hot turbine and compressor bearing housings; dry storage temperature spans -55℃ ~ +95℃ under non-condensing storage surroundings. Working relative humidity is controlled between 5%RH and 95%RH with no internal condensation allowed to avoid insulation deterioration and inner core short-circuit. When installed above 1000 meters altitude, shorten regular inspection cycle properly due to reduced heat dissipation under thin air. The probe withstands regular industrial ambient vibration of 10Hz~60Hz; long-term continuous service in environments with strong corrosive gas and uninterrupted hot steam immersion is strictly prohibited to extend service life of internal components.
5. Application Scope and Routine Maintenance Guidance
3000-00-18-36-02 flush-mounted proximity probes are widely installed on bearing pedestals of large rotating equipment as core sensing components of TSI machinery protection system in power plants, oil refineries and metallurgical workshops for real-time vibration and clearance monitoring.
During regular field maintenance, periodically check probe housing integrity, outer cable abrasion status and connector fastening tightness to avoid intermittent signal loss caused by loose connection or jacket rupture and subsequent oil infiltration inside wiring. For fault replacement, only spare probe with identical full part number can be adopted; mismatched flush tip structure, housing length or built-in cable length will change total loop capacitance and lead to distorted measuring data. All aftermarket refurbished probes complete full capacitance recalibration, load aging and alternating high-low temperature shock test complying with original factory standards before delivery to guarantee full interchangeability during equipment overhaul and spare part replacement.
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