Bently Nevada 330704-000-060-90-01-CN — 3300 XL 11mm Eddy Current Proximity Probe | 3300 XL Series Platform
Engineering Background: The Bently Nevada 3300 XL Series represents the industry benchmark for non-contact eddy current measurement in rotating machinery protection systems. Engineered to API 670 standards, this platform is the preferred choice for turbines, compressors, pumps, and gearboxes in oil & gas, power generation, and petrochemical facilities worldwide.
Product Positioning: The 330704-000-060-90-01-CN is an 11mm diameter proximity probe with a 60-inch (1524mm) armored extension cable, designed for radial vibration and axial position measurement. The “-CN” suffix denotes the Chinese market configuration, fully compatible with standard 3300 XL driver/monitor systems. This probe is a direct OEM replacement for installed base assets and new machinery protection projects.
Complete Technical Specifications
- Part Number: 330704-000-060-90-01-CN
- Series / Platform: Bently Nevada 3300 XL
- Probe Tip Diameter: 11 mm
- Cable Length: 60 in (1524 mm) armored extension cable
- Measurement Type: Radial vibration, axial position (non-contact eddy current)
- Sensitivity: 7.87 V/mm (200 mV/mil) nominal
- Linear Range: 0.25 – 2.25 mm (10 – 90 mil)
- Frequency Response: DC to 10,000 Hz (–3 dB)
- Operating Temperature: –35°C to +177°C (–31°F to +351°F)
- Supply Voltage: –24 VDC (nominal), compatible with 3300 XL drivers
- Target Material: AISI 4140 steel (standard); other alloys with calibration
- Connector: 90° armored cable, standard BN connector
- Housing Material: Stainless steel, corrosion-resistant
- Ingress Protection: IP67
- Weight: ~980 g (probe + cable assembly)
- Compliance: API 670, CE, RoHS
- Country of Origin: USA (Baker Hughes / Bently Nevada)
Proven Application Environments
- Steam and gas turbine radial shaft vibration monitoring
- Centrifugal compressor axial thrust position measurement
- Boiler feed pump and cooling water pump protection
- Gearbox and motor bearing proximity sensing
- Petrochemical plant rotating equipment health monitoring
- Power generation critical machinery protection systems
- Offshore platform and LNG facility machinery trains
Engineering Advantages
- API 670 Compliant: Meets the most stringent international standard for machinery protection instrumentation
- Non-Contact Measurement: Zero mechanical wear, continuous operation without maintenance intervals
- Wide Temperature Range: Reliable performance from cryogenic to high-temperature process environments
- Armored Cable: Stainless steel armor protects against mechanical damage, vibration fatigue, and chemical exposure
- Direct OEM Replacement: Plug-and-play compatibility with all 3300 XL drivers and Bently Nevada 3500 monitor racks
- High EMI Immunity: Shielded cable construction minimizes interference in electrically noisy plant environments
- Long Service Life: Proven MTBF exceeding 100,000 hours in continuous industrial service
System Architecture & Signal Flow
The 330704-000-060-90-01-CN operates as part of the Bently Nevada 3300 XL eddy current measurement chain:
- Probe (330704 series) → generates eddy current field, senses target gap
- Extension Cable → 60-inch armored cable transmits raw oscillator signal
- Driver / Proximitor (330180 / 330130 series) → conditions signal, outputs –24V DC proportional voltage
- Monitor (3500/40M or 3500/42M) → processes signal for vibration, position, and alarm/trip logic
- DCS / Safety System → receives 4–20 mA or relay outputs for plant-level integration
Total system gap voltage: –10.0 VDC at nominal 1.0 mm gap (with matched 3300 XL driver).
Sourcing & Quality Verification
- Source: Authorized distribution channel and verified surplus OEM stock
- Inspection: Each unit inspected for physical integrity, connector condition, and cable armor continuity
- Documentation: Original manufacturer labeling and part number verification on every unit
- Traceability: Batch records available upon request for critical plant applications
- Warranty: 12-month Konmask quality guarantee against manufacturing defects
- Counterfeit Prevention: All units sourced from traceable supply chains; certificates of conformance available
Procurement Process
- Step 1: Confirm part number 330704-000-060-90-01-CN matches your installed driver model and cable length requirement
- Step 2: Submit RFQ via [email protected] or place order directly on Konmask.com
- Step 3: Receive order confirmation with lead time and shipping details within 24 hours
- Step 4: Expedited DHL / FedEx international shipping available; export documentation provided
- Step 5: Post-delivery technical support available for installation and commissioning queries
Technical FAQ
Q: Is this probe compatible with the Bently Nevada 3500 monitor rack?
A: Yes. The 330704 series probe is fully compatible with 3500/40M and 3500/42M proximity monitor modules when used with a matched 3300 XL driver.
Q: What is the correct gap voltage for commissioning?
A: Set the probe gap to achieve –10.0 VDC ±0.5 VDC at the driver output, corresponding to approximately 1.0 mm (40 mil) physical gap on AISI 4140 steel target.
Q: Can this probe be used on non-steel targets?
A: Yes, but a target-specific calibration curve is required. Contact Konmask engineering support for calibration data on Inconel, titanium, or other alloy targets.
Q: What is the difference between -01-CN and standard -01-00 suffix?
A: The -CN suffix designates the Chinese market configuration. Electrically and mechanically identical to the -01-00 variant; fully interchangeable in 3300 XL systems.
Q: Do you provide export documentation for international orders?
A: Yes. Commercial invoice, packing list, certificate of origin, and ECCN classification documentation are provided for all international shipments.
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