Bently Nevada 330704-000-060-90-02-CN – Eddy Current Transducer System | 3300 Series Platform
Engineering Background: The Bently Nevada 3300 Series is the global benchmark for continuous shaft vibration monitoring in rotating machinery. Deployed across power generation, petrochemical, and heavy industrial facilities worldwide, the 3300 platform delivers the measurement precision and reliability demanded by API 670 machinery protection standards.
Product Positioning: The 330704-000-060-90-02-CN is a complete eddy current transducer system configured for 6.0 mm probe tip diameter, 90 mm extension cable, and 2-meter interconnect cable with CN (Chinese) regional compliance markings. It is engineered for non-contact, continuous measurement of radial shaft vibration, axial position, and differential expansion in turbines, compressors, pumps, and motors.
Complete Technical Specifications
- Part Number: 330704-000-060-90-02-CN
- Manufacturer: Bently Nevada (Baker Hughes)
- Series: 3300 XL 8mm Proximity Transducer System
- Measurement Type: Eddy Current / Non-contact Displacement
- Probe Tip Diameter: 8 mm
- Linear Range: 0.25 mm to 2.25 mm (10 mil to 90 mil)
- Scale Factor: 7.87 V/mm (200 mV/mil)
- Frequency Response: DC to 10,000 Hz (–3 dB)
- Extension Cable Length: 0.9 m (90 cm)
- Interconnect Cable Length: 2.0 m
- Operating Temperature: –35°C to +121°C (probe); –35°C to +66°C (driver)
- Supply Voltage: –24 VDC (nominal)
- Output Voltage Range: –2 VDC to –18 VDC
- Connector Type: 5-pin DIN (driver output)
- Target Material: AISI 4140 steel (standard); other alloys available
- Compliance: API 670, CE, CN regional marking
- Weight: Approx. 4,460 g (complete system with packaging)
Proven Application Environments
- Power Generation: Steam turbine shaft radial vibration and axial position monitoring
- Oil & Gas: Centrifugal compressor and gas turbine protection systems
- Petrochemical: Critical pump and motor bearing displacement measurement
- Marine & Offshore: Propulsion shaft monitoring in harsh environments
- Pulp & Paper / Steel Mills: High-temperature rotating equipment surveillance
- Water Treatment: Large pump station continuous condition monitoring
Engineering Advantages
- Non-Contact Measurement: Zero mechanical wear; suitable for continuous 24/7 operation
- Wide Frequency Bandwidth: DC to 10 kHz captures both slow-roll runout and high-frequency vibration events
- High Temperature Probe: Rated to +121°C probe tip — suitable for direct turbine bearing housing installation
- API 670 Compliant: Meets the international standard for machinery protection instrumentation
- Plug-and-Play Compatibility: Direct replacement for existing 3300 Series installations without recalibration
- EMI Shielded Cable: Braided shield construction minimizes electrical noise in industrial environments
System Architecture & Signal Flow
The 330704-000-060-90-02-CN operates as a three-component eddy current system:
- Probe (330704): Generates a high-frequency electromagnetic field; detects changes in target distance via eddy current effect
- Extension Cable (330130-090): 0.9 m coaxial cable transmitting the oscillator signal between probe and driver with minimal signal loss
- Driver / Oscillator-Demodulator: Converts the raw oscillator signal into a calibrated DC voltage output proportional to gap distance; powers the probe and conditions the output for DCS/PLC input cards
Output signal is a linear DC voltage (–2 V to –18 V) directly compatible with Bently Nevada 3500 Series monitor input cards and most third-party vibration monitoring systems.
Sourcing & Quality Verification
At Konmask.com, every Bently Nevada component undergoes a structured verification process before shipment:
- Step 1 — Documentation Review: Factory certificates, date codes, and serial number traceability verified against manufacturer records
- Step 2 — Physical Inspection: Connector integrity, cable jacket condition, probe tip surface, and label authenticity checked by trained technicians
- Step 3 — Functional Bench Test: Probe-driver system energized and output linearity verified across the full measurement range using calibrated gap blocks
- Step 4 — Packaging & ESD Protection: Anti-static packaging, moisture barrier bags, and rigid outer carton for safe international transit
Procurement Process
- Submit Inquiry: Contact support@konmask.com with your required quantity, delivery timeline, and destination port
- Quotation & Lead Time: We respond within 24 hours with pricing, availability, and estimated delivery
- Order Confirmation: Pro-forma invoice issued; payment via T/T, L/C, or agreed terms
- Quality Hold & Dispatch: Unit reserved, inspected, and dispatched with full documentation package (test report, packing list, commercial invoice)
- Logistics Tracking: Real-time shipment tracking provided via DHL Express, FedEx, or sea freight depending on order volume
- After-Sales Support: Technical assistance available post-delivery for installation and commissioning queries
Technical FAQ
Q: Is the 330704-000-060-90-02-CN a direct replacement for the 330704-000-060-10-02-CN?
A: The primary difference is the regional compliance marking (CN vs. standard). Electrically and mechanically, the systems are identical and fully interchangeable.
Q: What monitor cards are compatible with this transducer system?
A: The output is compatible with Bently Nevada 3500/40M, 3500/42M, 3500/45, and 3500/46M monitor cards, as well as most third-party vibration monitors accepting –2 V to –18 VDC input.
Q: Can this system measure axial position as well as radial vibration?
A: Yes. The 3300 XL eddy current system measures any displacement within its linear range, including axial thrust position, differential expansion, and eccentricity, depending on probe mounting orientation.
Q: What is the target material requirement?
A: Standard calibration is for AISI 4140 steel. For other alloys (stainless steel, Inconel, titanium), a material correction factor or field recalibration is required. Contact our technical team for guidance.
Q: Do you provide calibration certificates?
A: Yes. Factory calibration documentation is included. Third-party calibration certificates can be arranged upon request at additional cost.
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