Bently Nevada 30000-00-30-24-02 Eddy Current Proximity Probe Product Specification
30000-00-30-24-02 is a factory pre-calibrated flush-type eddy-current proximity probe of Bently Nevada 30000 series, engineered and manufactured in accordance with API670 industry standard for turbomachinery supervisory instrumentation and equipment protection systems. When paired with factory-certified matched extension cable and compatible proximitor transducer, the probe forms a complete closed-loop non-contact displacement measurement circuit based on eddy-current induction principle. It converts real-time clearance changes between the flush sensing face and metallic rotating shaft into stable linear DC voltage output, enabling continuous online monitoring of radial shaft vibration, axial thrust displacement and Keyphasor rotational speed. This transducer is widely applied on critical high-speed rotating machinery including steam turbines, centrifugal compressors, turbo-generator sets, boiler feedwater pumps and industrial blowers within thermal power, petrochemical refining and metallurgical industries. Every finished probe undergoes full-loop capacitance matching test, wiring continuity inspection, alternating high-low temperature cyclic aging and connector sealing durability test before delivery, ensuring consistent measuring precision under harsh working conditions with fluctuating ambient temperature, heavy lubricant mist and complex electromagnetic interference. All analog measured signals are transmitted to Bently 3500 monitoring rack, field DCS or PLC control system to trigger pre-alarm and emergency trip interlock, preventing severe mechanical damage caused by excessive rotor offset and over-limit vibration amplitude.
Description
Bently Nevada 30000-00-30-24-02 Eddy Current Proximity Probe Product Specification
1. Product Overview
30000-00-30-24-02 is a factory pre-calibrated flush-type eddy-current proximity probe of Bently Nevada 30000 series, engineered and manufactured in accordance with API670 industry standard for turbomachinery supervisory instrumentation and equipment protection systems. When paired with factory-certified matched extension cable and compatible proximitor transducer, the probe forms a complete closed-loop non-contact displacement measurement circuit based on eddy-current induction principle. It converts real-time clearance changes between the flush sensing face and metallic rotating shaft into stable linear DC voltage output, enabling continuous online monitoring of radial shaft vibration, axial thrust displacement and Keyphasor rotational speed. This transducer is widely applied on critical high-speed rotating machinery including steam turbines, centrifugal compressors, turbo-generator sets, boiler feedwater pumps and industrial blowers within thermal power, petrochemical refining and metallurgical industries. Every finished probe undergoes full-loop capacitance matching test, wiring continuity inspection, alternating high-low temperature cyclic aging and connector sealing durability test before delivery, ensuring consistent measuring precision under harsh working conditions with fluctuating ambient temperature, heavy lubricant mist and complex electromagnetic interference. All analog measured signals are transmitted to Bently 3500 monitoring rack, field DCS or PLC control system to trigger pre-alarm and emergency trip interlock, preventing severe mechanical damage caused by excessive rotor offset and over-limit vibration amplitude.
2. Part Number Coding Definition
The five-segment part number follows standardized modular coding specification of Bently 30000 series with fixed definition for each segment:30000 represents core product series, featuring 11mm outer probe diameter and standard M14×2 metric mounting thread, factory fixed sensitivity of 3.94V/mm and full compatibility with Bently 3300 and 3500 series proximitor modules.00 stands for zero exposed unthreaded sensing tip; the detecting end face is fully flush with thread terminal surface without protruding probe rod, designed for closed bearing housing installation where tip intrusion into internal lubrication cavity is forbidden.30 defines total stainless steel probe housing length of 300 millimeters, suitable for shallow mounting holes on compact bearing pedestals.24 specifies factory pre-integrated built-in probe cable length of 2.4 meters; the fixed cable length is pre-calculated into full closed-loop capacitance matching together with matched extension cable and proximitor. Random on-site cable cutting or replacement with unmatched cable will break original impedance balance and lead to measurement zero drift and non-linear errors.02 denotes standard cable configuration: non-armored fluoropolymer outer jacket equipped with gold-plated standard ClickLoc stainless steel threaded coaxial connector at cable end, no external metal armor or customized plug modification. All mechanical and electrical parameters are fixed after factory calibration and cannot be arbitrarily modified during field installation.
3. Mechanical and Raw Material Specifications
Internal induction winding core is made of high-stability precision alloy wrapped with high-temperature resistant modified PPS insulation layer, maintaining stable dielectric constant and excellent oil-proof anti-corrosion performance under varying temperature and long-term lubricant mist immersion. Probe outer housing is precision CNC-machined solid stainless steel with outstanding rust-proof, anti-impact and high-temperature steam resistant property for long-term installation near high-temperature equipment casing. Internal multi-strand oxygen-free copper conductors reduce high-frequency signal attenuation and improve anti-RFI interference capability. Intermediate fluoropolymer insulation matches dielectric requirements of eddy-current operation principle. Outer cable sheath is wear-resistant thermoplastic elastomer to resist mechanical scratch, dust accumulation and lubricant erosion. The tail stainless steel ClickLoc connector is fitted with built-in elastic rubber sealing ring to block moisture, fine metal scraps and oil from penetrating internal wiring after locking with matched extension cable terminal. The integrated cable keeps proper flexibility and must be wired above the specified minimum bending radius to avoid insulation cracking.
4. Electrical Performance and Environmental Working Parameters
The probe must work with matched proximitor powered by negative DC supply ranging from -17.5VDC to -26VDC. The complete measuring loop of probe, certified extension cable and proximitor remains factory-calibrated sensitivity of 3.94V/mm, with effective frequency response from 0Hz to 10kHz to cover slow static axial displacement tracking and high-frequency dynamic radial vibration sampling of high-speed rotors.Permitted continuous operating temperature ranges from -40℃ to +120℃ for low-temperature outdoor installation and high-temperature arrangement near hot bearing housings; dry storage temperature is controlled between -55℃ and +95℃ under non-condensing environment. Working relative humidity is limited within 5%RH~95%RH with no internal condensation inside probe and cable to avoid insulation deterioration and inner core short-circuit. When installed above 1000 meters altitude, shorten regular inspection cycle appropriately to compensate poor heat dissipation caused by thin air. The probe withstands normal industrial vibration of 10Hz~60Hz; long-term continuous running in surroundings with strong corrosive gas and continuous hot steam is strictly prohibited to extend component service life.
5. Application Scope and Routine Maintenance Guidance
30000-00-30-24-02 short-body flush-mounted proximity probes act as core sensing components of TSI machinery protection systems, widely installed on shallow-hole compact bearing supports of large critical rotating equipment in power plants, petrochemical refineries and metallurgical workshops for real-time shaft clearance and vibration monitoring.During regular maintenance, check probe housing integrity, outer cable abrasion and connector fastening tightness periodically to avoid intermittent signal loss caused by loose connection or jacket rupture and subsequent oil infiltration. For equipment replacement, only spare probe with identical full part number can be directly swapped; any modification on flush tip structure, housing length or built-in cable length will alter full-loop capacitance and result in distorted measuring data. All replacement probes complete full capacitance recalibration and alternating high-low temperature aging test per original factory standards before delivery to guarantee full interchangeability during unit overhaul.
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