Bently Nevada 330104-12-20-10-02-00 — High-Precision Eddy Current Proximity Probe | 3300 XL 8mm Series
Engineering Background
The Bently Nevada 3300 XL Series represents the industry benchmark for non-contact shaft vibration and position measurement in rotating machinery. Developed under Baker Hughes’ Condition Monitoring portfolio, the 3300 XL system is engineered to meet API 670 requirements for machinery protection in turbines, compressors, pumps, and motors operating in critical process environments.
Product Positioning
The 330104-12-20-10-02-00 is an 8mm eddy current proximity probe with a 5-meter (20-foot) integral cable, designed for continuous shaft radial vibration, axial position, and differential expansion monitoring. It is the preferred sensor for procurement engineers specifying API 670-compliant machinery protection systems in petrochemical, power generation, and heavy industrial facilities.
Complete Technical Specifications
- Part Number: 330104-12-20-10-02-00
- Series / Platform: Bently Nevada 3300 XL 8mm Proximity Transducer System
- Sensing Technology: Eddy Current (Non-Contact)
- Probe Tip Diameter: 8 mm
- Cable Length: 5.0 m (20 ft) integral armored cable
- Extension Cable: Compatible with 330130 series (to complete 5m or 9m system)
- Linear Range: 0.25 mm – 2.25 mm (10 mil – 90 mil)
- Scale Factor (Sensitivity): 7.87 V/mm (200 mV/mil)
- Supply Voltage: -24 VDC (nominal)
- Frequency Response: DC to 10,000 Hz (–3 dB)
- Operating Temperature: -35°C to +121°C (probe body)
- Target Material: AISI 4140 steel (standard); other materials require calibration correction
- Connector: 02-pin MIL-C-5015 style
- Housing Material: Stainless steel, hermetically sealed
- Ingress Protection: IP67
- Compliance: API 670, CE
- Weight: 210 g (probe + cable assembly)
- Compatible Monitor: 3300/16, 3500/42, 3500/42M, 3500/44, 3500/45, 3500/46
Proven Application Environments
- Steam and gas turbine shaft radial vibration monitoring
- Centrifugal compressor rotor position and vibration
- Boiler feed pump and cooling water pump protection
- Gearbox and motor bearing proximity measurement
- Differential expansion and thrust position on large rotating machines
- Petrochemical plant API 670 machinery protection systems
- Power generation (nuclear, thermal, combined-cycle)
Engineering Advantages
- Non-contact measurement: Zero mechanical wear, suitable for continuous 24/7 operation
- High frequency response: DC–10 kHz captures sub-synchronous, synchronous, and high-frequency vibration events
- Hermetically sealed body: Withstands oil mist, steam, and aggressive process atmospheres
- Integral cable design: Eliminates field-connection variability; factory-calibrated as a matched system
- API 670 compliant: Drop-in replacement for existing 3300 XL installations without recalibration
- Wide temperature range: Reliable from cryogenic pre-cooling to high-temperature turbine casings
System Architecture & Signal Flow
The 330104-12-20-10-02-00 operates as part of a three-component eddy current transducer system:
- Proximity Probe (330104-12-20-10-02-00) — Generates oscillating electromagnetic field; detects target gap changes via eddy current effect
- Extension Cable (330130 series) — Transmits raw oscillator signal from probe to driver; length must be matched to probe cable for system calibration
- Proximitor® Driver / Oscillator (330180 or 3300 XL driver) — Converts gap-dependent impedance change to –24V DC output signal at 200 mV/mil scale factor
Output signal feeds directly into Bently Nevada 3500 Series rack monitors or equivalent API 670 monitors for alarm, trip, and data acquisition functions.
Sourcing & Quality Verification
- All units sourced from authorized distributors or verified OEM surplus channels
- Each probe inspected for connector integrity, cable continuity, and housing condition prior to shipment
- Original manufacturer labeling and part number markings preserved and verified
- Functional test reports available upon request for critical applications
- Traceability documentation (CoC / test records) provided for power generation and nuclear-adjacent projects
Procurement Process
- Confirm compatibility: Verify your existing Proximitor® driver model and extension cable length to ensure system calibration match
- Request quote: Contact [email protected] for volume pricing, lead time, and documentation packages
- Place order: Purchase directly via this listing or submit a PO to our procurement team
- Shipping: DHL / FedEx express worldwide; export documentation (CO, packing list, commercial invoice) included
- After-sales: Technical support available for installation, commissioning, and calibration verification
Technical FAQ
Q: Is the 330104-12-20-10-02-00 a direct replacement for the 330104-12-20-10-01-00?
A: The suffix -02-00 denotes the connector type. Verify your mating connector before substituting; the sensing and cable specifications are otherwise identical.
Q: Can this probe be used with a 3500/42E monitor?
A: Yes. The 3300 XL 8mm system is fully compatible with the 3500/42E Proximitor® Monitor when paired with the correct driver and extension cable to achieve the required system length.
Q: What is the target material correction for stainless steel shafts?
A: Stainless steel (300 series) requires a scale factor correction of approximately –15%. Bently Nevada application note 141-108-000 provides full correction curves for non-standard target materials.
Q: Do you provide calibration certificates?
A: Factory calibration data is embedded in the part number configuration. Third-party calibration certificates can be arranged upon request for an additional fee.
Q: What is the minimum order quantity?
A: No minimum order quantity. Single units and bulk orders are both accommodated.
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