Bently Nevada 330903-00-23-10-02-00 – Non-Contact Proximity Transducer System | 3300 XL Series Platform
Engineering Background: The Bently Nevada 330903-00-23-10-02-00 is a precision, factory-calibrated proximity transducer system engineered for continuous non-contact measurement of shaft radial vibration, axial position, and eccentricity in critical rotating machinery. Developed under Bently Nevada’s globally recognized 3300 XL platform — a Baker Hughes brand — this matched three-component system defines the reference standard for turbomachinery protection and condition monitoring in accordance with API 670.
Product Positioning: Specified by reliability engineers, rotating equipment specialists, and EPC procurement teams operating in power generation, oil & gas, petrochemical, and heavy industrial sectors. The 330903-00-23-10-02-00 delivers the signal integrity, long-term stability, and hazardous-area certification demanded by safety-critical machinery protection systems — from combined-cycle power plants to offshore compression trains.
Complete Technical Specifications
- Part Number / SKU: 330903-00-23-10-02-00
- Manufacturer: Bently Nevada (Baker Hughes)
- Series / Platform: 3300 XL Proximity Transducer System
- Measurement Principle: Eddy-current (non-contact) — radial vibration, axial position, eccentricity
- Probe Tip Diameter: 8 mm
- Probe Cable Length: 23 cm (integral, factory-matched)
- Extension Cable Length: 10 m (factory-matched, impedance-controlled)
- Driver / Oscillator-Demodulator: 3300 XL 8mm Proximitor® Sensor
- Supply Voltage: –24 VDC (nominal)
- Output Signal: –2 VDC to –18 VDC (linear range)
- Sensitivity: 7.87 V/mm (200 mV/mil)
- Linear Range: 0.25 mm to 2.26 mm (10 mil to 90 mil)
- Frequency Response: DC to 10,000 Hz (–3 dB)
- Operating Temperature — Probe: –35 °C to +177 °C
- Operating Temperature — Driver: –35 °C to +85 °C
- Target Material: Ferrous alloys (AISI 4140 standard calibration target)
- Ingress Protection: IP66 (probe assembly)
- Connector Type: MIL-C-5015 series (standard Bently Nevada)
- Agency Approvals: CE, FM, CSA, ATEX Zone 1/2, IECEx
- Compliance Standards: API 670, ISO 10816, IEC 61508 (SIL 2 capable)
- System Weight: Approx. 300 g (complete matched set)
Proven Application Environments
- Steam and gas turbines — power generation and combined-cycle plants
- Centrifugal and axial compressors — upstream and downstream oil & gas
- Pumps, fans, and blowers in critical and continuous service
- Gearboxes and expanders in petrochemical and refinery processes
- Marine propulsion systems and offshore platform rotating machinery
- Pulp & paper, mining, and cement plant drive trains
- Nuclear auxiliary systems requiring SIL-rated instrumentation
Engineering Advantages
- API 670 Compliant: Meets the most stringent international standard for machinery protection systems — accepted by EPC contractors and end-users globally without derogation.
- Eddy-Current Technology: Immune to oil contamination, humidity, and process fluids — zero physical contact with the rotating shaft eliminates wear and maintenance intervals.
- Wide Frequency Bandwidth (DC–10 kHz): Captures slow-roll runout, 1× synchronous vibration, and high-frequency sub-synchronous instabilities in a single channel.
- Plug-and-Play Monitor Compatibility: Direct input to 3300/16, 3300/20, 3500/40M, 3500/42M, and 3500/45 rack monitors — no additional signal conditioning required.
- Hazardous Area Rated: ATEX Zone 1 and IECEx certified for direct installation in explosive atmospheres without external barriers in standard configurations.
- Long-Term Calibration Stability: Proprietary coil and cable construction ensures <1% sensitivity drift over 10-year service intervals — minimizing recalibration cost.
System Architecture & Signal Flow
The 330903-00-23-10-02-00 is supplied as a factory-calibrated matched set comprising three integrated components:
- Probe (8 mm tip): Generates a high-frequency electromagnetic field directed at the target shaft surface. Eddy currents induced in the ferrous target modulate the field in direct proportion to the air gap distance.
- Extension Cable (10 m): Transmits the modulated RF signal from probe to Proximitor® driver with controlled characteristic impedance. Cable length is factory-matched and must not be substituted or extended in the field.
- Proximitor® Driver / Oscillator-Demodulator: Converts the RF modulation into a DC-proportional voltage output (–2 VDC to –18 VDC). Output feeds directly to the 3300/3500 monitor input card for vibration and position processing.
Important: All three components are factory-calibrated as a matched set. Field substitution of any individual component invalidates system calibration and may violate API 670 compliance. Full system recalibration per API 670 Annex D is required if any component is replaced.
Sourcing & Quality Verification
- Origin: Genuine Bently Nevada (Baker Hughes) manufactured component
- Condition: New surplus or certified refurbished — unit condition confirmed and documented prior to shipment
- Traceability: Each unit ships with original part label, serial number, and available factory documentation
- Inspection Protocol: Functional bench test performed — output linearity, sensitivity (V/mm), and frequency response verified against OEM datasheet specification
- Packaging: ESD-safe packaging with moisture barrier; original Bently Nevada packaging supplied where available
- Lead Time: Typically 3–7 business days ex-warehouse; expedited and emergency options available on request
Procurement Process
- Submit RFQ via support@konmask.com or WhatsApp +0086 19859288691
- Provide application details (monitor model, installation environment, required quantity) for compatibility confirmation
- Receive formal quotation with lead time, condition report, and available documentation within 24 hours
- Payment terms: T/T, L/C, PayPal, and major credit cards accepted
- Export: DDP / DAP worldwide; full customs documentation and HS code declaration provided
- Warranty: 12-month warranty against manufacturing defects from date of shipment
Technical FAQ
Q: Can I replace only the probe or extension cable individually?
A: No. The 330903-00-23-10-02-00 is a factory-calibrated matched set. Replacing any individual component requires full system recalibration per API 670 Annex D procedures. Contact Konmask for matched replacement sets.
Q: Is this compatible with the Bently Nevada 3500 rack system?
A: Yes. The 3300 XL 8mm proximity system is fully compatible with 3500/42M, 3500/40M, and 3500/45 monitor modules when configured for 8mm probe input.
Q: What is the maximum shaft speed this system can monitor?
A: The 10 kHz frequency response supports 1× vibration measurement at shaft speeds well beyond any practical turbomachinery application. For high-speed machinery above 30,000 RPM, confirm channel configuration with your Bently Nevada system integrator.
Q: Does this system require intrinsic safety barriers in hazardous areas?
A: In standard ATEX Zone 1 configurations, the Proximitor® driver is rated for direct installation in the hazardous area without external barriers. Verify with your site safety authority for Zone 0 or specific national regulatory requirements.
Q: What target materials are compatible?
A: Optimized for AISI 4140 steel (standard OEM calibration target). Other ferrous alloys require sensitivity correction per Bently Nevada Application Note 141. Non-ferrous targets (aluminum, titanium, copper alloys) are not compatible without special factory calibration.
Q: Can Konmask provide a Certificate of Conformance or test report?
A: Yes. A functional test report and available factory documentation are provided with each shipment. Certificate of Conformance available on request for quality-critical procurement.
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