Description
Bently 330902‑00‑95‑10‑02‑00
Technical Specifications:
- Sensing Principle: Eddy‑current non‑contact inductive sensing
- Thread Specification: 1/4‑28 UNF
- Unthreaded Tip Length: 0.0 inch
- Probe Overall Case Length: 9.5 inch
- Integral Armored Cable Length: 10 meters
- Connector Type: ClickLoc miniature gold‑plated coaxial connector
- Nominal Sensitivity: 7.87 V/mm (200 mV/mil), tolerance ±5%
- Linear Measurement Range: 0‑2 mm
- Frequency Response: 0 Hz to 10 kHz (-3 dB)
- Operating Probe Temperature: ‑55 °C ~ +175 °C
- Storage Temperature: ‑60 °C ~ +185 °C
- Insulation Resistance: ≥500 MΩ at 500 VDC
- Shock Resistance: 1000 g peak half‑sine pulse
- Continuous Vibration Rating: 30 g peak, 55 Hz‑2000 Hz
- Ingress Protection Rating: Hermetically sealed IP68 probe body, armored cable mechanical protection Functional Features:
- Stainless‑steel flexible armor layer shields internal triaxial signal cable from mechanical abrasion, sharp‑edge cutting and external impact damage in harsh field routing environment.
- Zero‑unthreaded‑tip structural design enables near‑flush installation for special fixture‑mounting requirements.
- Laser‑welded full hermetic sealing construction prevents machine‑oil, steam and moisture from intruding internal coil cavity.
- Gold‑plated ClickLoc connector realizes finger‑tight locking connection, maintains stable contact status under sustained equipment operational vibration.
- Factory pre‑assembled 10‑meter armored‑cable assembly preserves full calibrated electrical‑length of NSv transducer system, field splicing is not permitted.
- Direct compatibility with NSv‑standard proximitor modules and 990‑series NSv two‑wire transmitters, no field‑site sensitivity adjustment.
- Excellent thermal stability, measurement deviation remains minimal under wide operating‑temperature fluctuation. Application Scenarios: Radial‑vibration and thrust‑position monitoring for large compressors, steam turbines and heavy process pumps; cable‑routing paths exposed to mechanical friction and impact risk; key‑phasor rotational‑speed signal pickup; petrochemical complex and power‑plant critical rotating‑machinery protection measurement loops. Performance Parameters: Linear error ≤ ±0.5% full‑scale; low inherent electrical noise output; phase shift ≤5° within working frequency band; reliable long‑term running performance without frequent recalibration. Material Composition: AISI 316 stainless‑steel probe housing and threaded fitting; precision‑wound copper sensing coil; high‑temperature ceramic insulating core; internal FEP‑jacketed triaxial signal cable; outer flexible stainless‑steel armor sheath; gold‑plated coaxial contact assemblies; fluorosilicone high‑temperature sealing gaskets; laser‑welded metal sealing seams. Structural Characteristics: Zero‑unthreaded‑tip cylindrical probe head; 1/4‑28 UNF external mounting thread; rear permanent potting joint connecting armored flexible metal‑sheath cable; cable‑end ClickLoc miniature coaxial plug; model number and unique serial number laser‑etched onto probe outer metal surface. Working Principle: Matched proximitor generates high‑frequency alternating excitation signal for probe internal coil, producing alternating magnetic field at probe tip surface. Magnetic field passes air gap and induces eddy‑current loops on conductive rotating‑shaft target surface. Variation of tip‑to‑target gap distance changes eddy‑current intensity and sensing‑coil impedance. Proximitor signal‑processing circuit converts impedance fluctuation into DC gap‑voltage with superimposed dynamic AC vibration component. DC gap‑voltage value maintains linear proportional relation with physical clearance distance. Installation Requirements:
- Thoroughly clean mounting threaded hole, remove burrs, rust and residual sealant material to achieve complete thread engagement.
- Fasten probe according to manufacturer‑specified torque value; excessive torque causes irreversible damage to internal coil assembly.
- Adjust static gap clearance between probe tip and shaft target to fall within middle section of probe linear measurement range.
- Keep enough separation distance between multiple adjacent probe tips to avoid electromagnetic cross‑talk disturbance.
- Armored cable minimum bending radius must exceed twelve times cable outer diameter; sharp bending, folding and heavy squeezing are forbidden.
- Separate armored‑cable routing path away from high‑power motor and variable‑frequency‑drive power cables to reduce electromagnetic interference.
- Tighten ClickLoc connector only by finger‑applied force; tool‑forced over‑torque damages gold‑plated internal contact components. Usage Notes:
- Probe housing cannot be disassembled, breaking laser‑welded hermetic seal voids factory calibration and environmental protection capability.
- Cutting, stripping or modifying factory‑integrated armored‑cable assembly is strictly prohibited, changed electrical length ruins system measurement linearity and sensitivity.
- Prevent heavy impact and scratching damage to probe‑tip ceramic surface; surface scratch will degrade sensing accuracy and linear performance.
- Avoid armored‑cable long‑time direct contact with high‑temperature hot‑surface piping to prevent accelerated aging of internal cable materials.
- Verify probe mounting tightness, armored‑cable mechanical integrity and connector locking condition during each equipment overhaul cycle.
