Bently 330101-00-09-10-02-CN 3300‑XL 8 mm Eddy‑Current Proximity Probe

Description

Hardware Specifications

• Part Type: 8 mm eddy‑current proximity probe, integral coaxial cable, ClickLoc miniature coaxial connector; no armor sheath
• Mounting: 3/8‑24 UNF‑2A male thread; wrench‑flat for installation torque control; standard threaded mounting into probe bracket or machine housing
• Termination: Integral 1‑meter 75‑ohm coaxial cable, terminated with ClickLoc gold‑plated miniature male coaxial connector for connection to extension cable / proximitor sensorBaker Hugh…
• Mechanical Construction: Probe tip: PPS polymer; probe body: AISI‑304 stainless‑steel; Viton O‑ring for sealing; unthreaded length 0.9 inch; overall case length 0.9 inch; total cable length 1 m
• PCB: No on‑board PCB; passive coil‑and‑insulator assembly inside probe tip
• Environmental Ratings: Probe operating temperature −35 °C ~ +177 °C; storage −40 °C ~ +185 °C; relative humidity 5‑95 % non‑condensing; vibration resistance compliant with API‑670 standard for turbine‑machinery transducers
• Electrical Characteristics: Nominal sensitivity 7.87 V/mm (200 mV/mil); linear measurement range 0.25 mm‑2.25 mm (approx. −1 Vdc to −17 Vdc); frequency response DC‑10 kHz (0 ~ ‑3 dB); minimum target flat‑surface diameter 15.2 mm; recommended minimum shaft diameter 50.8 mm; must pair with compatible 3300‑XL proximitor and correct total‑system‑length extension cable; CN suffix is regional marking, no change to core electrical performance
• Signal Compatibility: Output raw eddy‑current gap‑proportional signal to 3300‑XL proximitor sensor; proximitor converts gap signal for 3500‑series / 1900‑series monitor modules.

Core Functions

1. Performs non‑contact gap measurement between probe tip and rotating metal shaft surface. Converts physical shaft‑to‑probe clearance into analogue voltage signal for radial vibration, shaft offset and thrust‑position monitoring.
2. Designed for critical machinery including steam‑turbines, gas‑turbines, large compressors. Measures dynamic radial vibration amplitude and static axial thrust position for machinery protection and condition‑diagnosis.
3. Requires complete matched transducer system: probe + extension cable + 3300‑XL proximitor sensor. Total system length must strictly match the calibration setting of the proximitor. Mismatched cable length will degrade sensitivity and linear‑range performance.
4. Recommended static installation gap set near mid‑linear‑range (approx. 1.27 mm / 50 mil, corresponding to −10 Vdc gap voltage) during commissioning. Cross‑talk shall be avoided by maintaining minimum physical separation between adjacent probe tips.
5. Widely deployed in power‑generation, petrochemical and oil‑gas plants. Distinguished by ordering suffix codes:‑00‑09‑10‑02‑CN defines short body 3/8‑24 thread, 1 m integral cable, non‑armored, CN regional variant. Any change of probe, cable or proximitor requires full gap calibration and linearity verification.

Installation Requirements

1. Mounting requirement: Install probe into threaded mounting bracket / machine housing. Apply correct installation torque for 3/8‑24 UNF thread; avoid over‑torque to prevent thread deformation or internal coil damage. Maintain adequate clearance between probe tip and rotating shaft surface to avoid mechanical contact during machine transient conditions.
2. Cable handling rule: Minimum cable bend radius 25.4 mm; avoid sharp bends, pinch, crush or tensile pull on coaxial cable. The ClickLoc connector shall be tightened finger‑tight plus 1/8‑turn maximum; over‑torque will damage gold‑plated contact pinsBaker Hugh….
3. Field‑wiring specification enforcement: Route probe coaxial cable separately away from high‑voltage power and large‑current motor cables to suppress electromagnetic interference. Ground shield only at proximitor‑sensor end, single‑point grounding rule to prevent ground‑loop noise. Verify total system length (probe cable plus extension cable) matches proximitor configuration setting.
4. Environmental control: Prevent cable exposure to excessive oil mist, corrosive chemical spray and high‑temperature hot‑spots outside rated temperature range. Mechanical abrasion of outer cable jacket will cause signal drift or intermittent faults.
5. Pre‑installation visual inspection: Inspect probe tip for chipping/crack, cable jacket for cuts, connector pins for bending or contamination before commissioning. After mechanical installation, measure static gap voltage to confirm probe sits within valid linear working range.
6. Part‑number cross‑version distinction: 330101‑00‑09‑10‑02‑CN is short‑body 8 mm probe with 1 m integral cable, non‑armored. Different unthreaded length, body length, cable length, armor and regional suffix variants cannot directly substitute; replacement needs re‑check of total system length and gap‑voltage calibration.

Common Failure Modes

‑ Cable‑jacket damage, internal coaxial conductor micro‑fracture: intermittent gap‑voltage drift, random noisy vibration readings, sporadic signal drop‑out. ‑ Probe‑tip mechanical impact / crack: loss of linearity, offset measurement value, zero‑shift of gap voltage. ‑ ClickLoc connector pin contamination or over‑torque damage: unstable signal connection, high‑frequency noise superimposed on vibration waveform. ‑ Prolonged over‑temperature exposure: internal coil insulation degradation, permanent sensitivity shift. ‑ Improper installation causing shaft‑to‑probe rub: physical destruction of probe tip and internal coil assembly, complete loss of measurement signal.