Bently Nevada 330904-00-20-05-01-00 — High-Precision Proximity Transducer | 3300 XL NSv Platform
Engineering Background
The Bently Nevada 3300 XL NSv (Non-contacting Vibration) Proximity Transducer System is a cornerstone of rotating machinery protection in critical industrial environments. Engineered to API 670 standards, this system delivers continuous, non-contact measurement of shaft radial vibration, axial position, and differential expansion — enabling real-time condition monitoring without interrupting machine operation.
Product Positioning
Part number 330904-00-20-05-01-00 is a complete proximity transducer assembly within the 3300 XL NSv series, designed for direct integration with Bently Nevada 3300 XL monitoring systems. It is the preferred choice for procurement engineers specifying OEM-equivalent replacement or greenfield installation in turbines, compressors, pumps, and gearboxes.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 330904-00-20-05-01-00 |
| Series / Platform | Bently Nevada 3300 XL NSv |
| Sensor Type | Eddy-Current Proximity Transducer (Non-contacting) |
| Measurement Range | 0 – 2.0 mm (0 – 80 mil) linear range |
| Scale Factor | 7.87 V/mm (200 mV/mil) |
| Frequency Response | DC – 10,000 Hz (±3 dB) |
| Operating Temperature | –35°C to +121°C (–31°F to +250°F) |
| Cable Length | 2.0 m (standard extension cable) |
| Probe Tip Diameter | 5 mm |
| Thread Size | M10 × 1.0 |
| Connector Type | 5-pin MIL-C-5015 (standard) |
| Supply Voltage | –24 VDC (nominal) |
| Output Signal | –2 VDC to –18 VDC (linear) |
| Compliance Standard | API 670, CE, RoHS |
| Weight | Approx. 140 g (probe + cable assembly) |
| Country of Origin | United States |
Proven Application Environments
- Steam & Gas Turbines — Shaft radial vibration and axial position monitoring per API 670
- Centrifugal Compressors — Continuous rotor dynamic surveillance in petrochemical and LNG plants
- Boiler Feed Pumps — High-temperature bearing proximity measurement in power generation
- Gearboxes & Expanders — Differential expansion and eccentricity monitoring
- Marine Propulsion Systems — Vibration surveillance in offshore and shipboard machinery
- Refinery Rotating Equipment — Continuous online monitoring in hazardous area classifications
Engineering Advantages
- Non-contact measurement — Zero mechanical wear; suitable for continuous 24/7 operation
- Wide frequency bandwidth — DC to 10 kHz captures sub-synchronous, synchronous, and high-frequency vibration events
- API 670 compliant — Drop-in compatible with existing 3300 XL monitoring racks and field wiring
- Temperature stability — Calibrated scale factor maintained across full operating temperature range
- Rugged construction — Stainless steel probe body; hermetically sealed for harsh process environments
- System interoperability — Direct compatibility with Bently Nevada 3300 XL drivers (330180, 330130 series) and System 1 software
System Architecture & Signal Flow
The 330904-00-20-05-01-00 operates as part of a three-component eddy-current system:
- Proximity Probe (330904) — Generates an electromagnetic field; detects gap change to rotating shaft target
- Extension Cable — Transmits the oscillator/demodulator signal with minimal loss over the specified cable length
- Proximitor® Driver — Conditions the raw signal into a calibrated DC voltage output proportional to gap distance
The output voltage (–2 V to –18 V) is fed directly to the 3300 XL monitor rack input card, which performs alarm setpoint comparison, buffered output, and communication to the plant DCS or historian via System 1 Evolution software.
Sourcing & Quality Verification
- All units sourced from authorized distributors or verified OEM-surplus channels
- Each unit undergoes incoming inspection: visual, dimensional, and functional verification
- Calibration certificate and traceability documentation available upon request
- Packaging: anti-static bag + foam-lined carton; original Bently Nevada labeling preserved
- Shelf life: unlimited when stored per manufacturer guidelines (dry, temperature-controlled environment)
Procurement Process
- Confirm compatibility — Verify your existing driver part number (330180-xx or 330130-xx) and cable length requirement
- Request a quote — Contact support@konmask.com for volume pricing, lead time, and documentation package
- Place order — Secure checkout via Konmask.com; T/T, credit card, and PayPal accepted
- Shipping — DHL / FedEx Express worldwide; export documentation (CO, packing list, commercial invoice) included
- After-sales support — 12-month warranty against manufacturing defects; technical support via email and WhatsApp
Technical FAQ
Q: Is 330904-00-20-05-01-00 compatible with the 3300 XL 8mm system?
A: No. The 330904 series is a 5 mm probe system. For 8 mm applications, refer to the 330780 or 330900 series. Always match probe, cable, and driver as a calibrated set.
Q: Can this transducer be used with non-Bently Nevada monitors?
A: The output signal (–2 V to –18 V DC, 200 mV/mil scale factor) is industry-standard and compatible with most third-party vibration monitors that accept eddy-current transducer inputs. Verify input impedance and supply voltage requirements before installation.
Q: What is the recommended gap setting?
A: The nominal installation gap is 1.0 mm (40 mil), placing the output at approximately –10 VDC at the midpoint of the linear range. Refer to Bently Nevada Installation Manual 141078 for detailed gap-setting procedures.
Q: Do you provide calibration certificates?
A: Yes. Factory calibration data and, where available, third-party calibration certificates can be provided. Contact us at the time of order to specify documentation requirements.
Q: What is the lead time for this part?
A: In-stock units ship within 1–3 business days. For large quantities or expedited requirements, contact support@konmask.com for availability confirmation.
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