Bently Nevada 30001-00-11-36-02 Eddy Current Proximity Probe Product Specification
30001-00-11-36-02 is a factory pre-calibrated eddy-current proximity probe from Bently Nevada’s 30001 series, manufactured per API670 standard for TSI machinery supervision and protection systems of critical rotating equipment. When paired with factory-certified matching extension cable and compatible proximitor transducer, the unit forms a complete non-contact clearance measurement loop. It converts tiny gap variations between the flush probe sensing face and metallic rotating shaft into linear DC voltage output signals to continuously monitor radial shaft vibration, axial thrust displacement and Keyphasor rotational speed. Typical applicable equipment includes 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, alternating high-low temperature cycling aging and connector sealing test before shipment to ensure stable linear output and reliable measuring accuracy under harsh industrial conditions featuring fluctuating ambient temperature, heavy lubricant oil mist and complex on-site electromagnetic interference. Collected measurement signals are transmitted to Bently 3500 monitoring racks, site DCS or PLC systems to activate pre-alarm and emergency trip interlock protection and avoid destructive mechanical failures of production units.
Description
Bently Nevada 30001-00-11-36-02 Eddy Current Proximity Probe Product Specification
1. Product Overview
30001-00-11-36-02 is a factory pre-calibrated eddy-current proximity probe from Bently Nevada’s 30001 series, manufactured per API670 standard for TSI machinery supervision and protection systems of critical rotating equipment. When paired with factory-certified matching extension cable and compatible proximitor transducer, the unit forms a complete non-contact clearance measurement loop. It converts tiny gap variations between the flush probe sensing face and metallic rotating shaft into linear DC voltage output signals to continuously monitor radial shaft vibration, axial thrust displacement and Keyphasor rotational speed. Typical applicable equipment includes 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, alternating high-low temperature cycling aging and connector sealing test before shipment to ensure stable linear output and reliable measuring accuracy under harsh industrial conditions featuring fluctuating ambient temperature, heavy lubricant oil mist and complex on-site electromagnetic interference. Collected measurement signals are transmitted to Bently 3500 monitoring racks, site DCS or PLC systems to activate pre-alarm and emergency trip interlock protection and avoid destructive mechanical failures of production units.
2. Part Number Coding Definition
The five-segment part number follows Bently’s standardized modular coding rules with fixed specification definition for each section:30001 refers to core product series of proximity probe with 11mm outer body diameter and standard M14×2 mounting thread, factory fixed sensitivity of 3.94V/mm, compatible with 3300 and 3500 series proximitors.00 means zero exposed protruding sensing tip; the probe detection surface is level with the end face of mounting thread for flush installation, ideal for bearing housings that forbid any protruding probe tip extending into the lubricant cavity.11 defines total metal probe housing length of 110mm, designed for shallow standard installation holes on most conventional bearing pedestals.36 stands for pre-attached factory-calibrated integral probe cable length of 3.6 meters. This fixed length is included in the overall capacitance calculation of the full measuring circuit together with extension cable and proximitor; arbitrary on-site cutting or mismatched cable replacement will break preset impedance matching and lead to measurement drift and non-linear errors.02 denotes standard cable and connector layout: non-armored fluoropolymer outer jacket plus gold-plated standard ClickLoc stainless steel threaded terminal at cable end, without external metal armor or custom modified plug configuration. All dimensional and electrical parameters are locked during factory production and cannot be modified arbitrarily after delivery.
3. Mechanical and Raw Material Specifications
The internal sensing coil core is made of high-stability precision alloy wrapped by high-temperature resistant PPS insulating material with steady dielectric constant, excellent oil resistance and anti-corrosion performance to maintain fixed capacitance under varying temperature and continuous oil mist environment. The probe outer housing is precision CNC machined solid stainless steel with outstanding anti-shock, rust-proof and high-temperature steam resistant performance for long-term mounting close to hot-running equipment casings. Internal signal conductors adopt multi-strand oxygen-free copper to reduce high-frequency signal attenuation and improve anti-RFI interference capacity. Intermediate fluoropolymer insulation keeps stable dielectric property required for eddy-current working principle. Outer cable jacket is wear-resistant thermoplastic elastomer to defend against field scratching, dust accumulation and lubricant impregnation. The tail stainless steel connector is equipped with built-in elastic rubber sealing ring to prevent moisture, fine metal debris and hydraulic oil from penetrating into inner wiring after mating with matched extension cable. The integral cable maintains proper flexibility to facilitate field routing within specified minimum bending radius without insulation cracking.
4. Electrical Performance and Environmental Working Parameters
This probe works 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 retains factory calibrated sensitivity of 3.94V/mm, with effective frequency response from 0Hz to 10kHz to capture both slow static axial thrust drift and high-frequency dynamic radial vibration of high-speed rotors.
Permitted continuous operating ambient temperature ranges from -40℃ to +120℃ for low-temperature outdoor installation and high-temperature layout near hot bearing housings; dry storage temperature ranges -55℃ ~ +95℃ under non-condensing storage surroundings. Working relative humidity is controlled between 5%RH and 95%RH with no internal condensation allowed to prevent insulation deterioration and inner core short-circuit. For installation altitude above 1000 meters, shorten routine inspection cycle appropriately due to reduced heat dissipation in thin air. The probe withstands regular industrial vibration of 10Hz~60Hz; long-term operation in environments with strong corrosive gas and persistent hot steam is prohibited to extend component service life.
5. Application Scope and Routine Maintenance Guidance
30001-00-11-36-02 flush-mounted proximity probes are widely installed on bearing housings of large rotating equipment as core sensing components of TSI protection systems in power plants, refineries and metallurgical plants for real-time vibration and clearance monitoring.
During regular maintenance, periodically check probe housing integrity, outer cable abrasion and connector tightening condition to avoid intermittent signal loss caused by loose connection or jacket damage and subsequent oil infiltration. For fault replacement, only spare probe with identical full part number can be used; any change of flush tip structure, housing length or built-in cable length will alter total loop capacitance and result in invalid monitoring data. All refurbished replacement probes complete full capacitance recalibration and temperature cycling aging test per original factory standards before delivery to guarantee interchangeability during equipment overhaul.
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