Bently Nevada 330101-00-13-10-02-05 – 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 to meet the stringent demands of API 670 machinery protection systems, this series has been deployed across thousands of critical turbomachinery installations worldwide — from gas turbines and steam turbines to centrifugal compressors and large pumps.
Product Positioning: The 330101-00-13-10-02-05 is an 8mm eddy current proximity probe within the 3300 XL platform. It is engineered for continuous, real-time measurement of radial shaft vibration, axial position (thrust), and differential expansion in high-speed rotating equipment. This specific configuration — 5-metre integral cable, standard temperature range, reverse mount — is the most widely specified variant in combined-cycle power plants and petrochemical facilities.
Complete Technical Specifications
- Part Number: 330101-00-13-10-02-05
- Series: Bently Nevada 3300 XL
- Probe Type: Eddy Current (Non-Contact) Proximity Probe
- Tip Diameter: 8 mm
- Cable Length: 5.0 m (integral armoured cable)
- Nominal Gap Range: 0.25 mm – 2.54 mm (10 – 100 mil)
- Linear Range: 0.25 mm – 2.29 mm (10 – 90 mil)
- Scale Factor: 7.87 V/mm (200 mV/mil)
- Frequency Response: DC – 10,000 Hz (–3 dB)
- Operating Temperature: –35°C to +177°C (–31°F to +350°F)
- Target Material: AISI 4140 steel (standard); compatible with most ferrous and non-ferrous metals
- Connector: Standard BNC (reverse mount)
- Housing Material: Stainless steel body with PTFE-jacketed cable
- Approvals: CE, ATEX, FM, CSA (system-level with 3300 XL driver)
- Compatible Driver/Oscillator: Bently Nevada 3300 XL Extension Cable + 3300 XL Proximitor® Sensor
- Weight: Approx. 60 g
- Country of Origin: USA
Proven Application Environments
- Gas Turbines (Frame 5–9): Radial shaft vibration monitoring on compressor and turbine stages; axial thrust position measurement to detect rotor migration before catastrophic failure.
- Steam Turbines (HP/IP/LP): Differential expansion monitoring across casing flanges; eccentricity measurement during slow-roll and startup sequences.
- Centrifugal Compressors: Real-time radial vibration on impeller stages in LNG trains, ethylene crackers, and ammonia synthesis loops.
- Large Pumps & Fans: Shaft position and vibration in boiler feed pumps, cooling water pumps, and induced-draft fans in power generation.
- Gearboxes: Gear mesh frequency analysis and bearing orbit monitoring in high-speed gearboxes.
- Expanders & Turboexpanders: Cryogenic service monitoring in air separation units and LNG liquefaction trains.
Engineering Advantages
- API 670 Compliant System: When paired with the 3300 XL Proximitor® and extension cable, the complete system meets API 670 5th Edition requirements for machinery protection — the global standard for critical rotating equipment.
- Wide Frequency Bandwidth: DC to 10 kHz response captures both low-frequency shaft bow and high-frequency subsynchronous instabilities (oil whirl, oil whip) in a single channel.
- Temperature Stability: Calibrated scale factor remains within ±1% across the full –35°C to +177°C operating range, eliminating temperature-induced false alarms in hot-section installations.
- Integral Armoured Cable: Factory-terminated, armoured cable eliminates field-splice failure points — the leading cause of proximity system downtime in harsh environments.
- Non-Contact Measurement: Zero mechanical wear; probe life exceeds 20 years in continuous service with no scheduled replacement interval.
- Direct Bently Nevada Ecosystem Compatibility: Plug-and-play with 3500 Series rack, System 1® software, and Orbit® analysis — no recalibration required.
System Architecture & Signal Flow
The 330101-00-13-10-02-05 operates as the sensing element in a three-component eddy current measurement chain:
- Proximity Probe (330101-00-13-10-02-05): Generates a high-frequency electromagnetic field (1.0 MHz nominal). Eddy currents induced in the rotating shaft attenuate the field proportionally to gap distance. Output: raw RF signal via integral cable.
- Extension Cable (330130 Series): Transmits the RF signal from the probe (installed in the bearing housing) to the Proximitor® sensor (installed in a safe area or junction box). Total system cable length must be matched to the driver calibration.
- Proximitor® Sensor (3300 XL, e.g. 330180): Demodulates the RF signal and outputs a DC voltage proportional to gap: –24 VDC supply in, 0 to –24 VDC signal out at 7.87 V/mm scale factor. Signal feeds directly to the 3500 rack monitor card or DCS analogue input.
The resulting DC voltage is processed by the 3500 Series monitor for alarm/trip logic, and simultaneously streamed to System 1® for continuous waveform analysis, orbit plots, and trend data.
Sourcing & Quality Verification
- Source: Konmask.com sources 330101-00-13-10-02-05 units from decommissioned OEM installations, authorised surplus channels, and verified industrial distributors — never grey-market or counterfeit supply chains.
- Incoming Inspection: Every unit undergoes dimensional verification of probe tip, cable continuity and insulation resistance test (>100 MΩ at 500 VDC), and visual inspection of connector and cable jacket integrity.
- Functional Test: Gap-vs-voltage linearity verified against Bently Nevada factory calibration data using a calibrated target fixture and precision gap gauge.
- Documentation: Certificate of conformance, inspection report, and original Bently Nevada calibration data sheet provided with each shipment.
- Packaging: Anti-static foam insert, individual poly bag, outer carton with shock-indicator label. Probe tip protected by factory cap.
Procurement Process
- Submit Enquiry: Email [email protected] with your part number (330101-00-13-10-02-05), required quantity, and delivery timeline. Include your plant name and application if expedited sourcing is required.
- Receive Quote: Our technical team will confirm stock availability, unit price (HKD/USD), lead time, and shipping options (DHL Express, FedEx International Priority, sea freight for bulk orders) within 24 business hours.
- Order Confirmation: Purchase order accepted via email. Pro-forma invoice issued for T/T wire transfer or credit card payment.
- Quality Release & Shipment: Units released after passing final inspection. Tracking number and inspection documentation emailed upon dispatch.
- After-Sales Support: Technical support available for installation, commissioning, and system integration queries.
Technical FAQ
Q: Can the 330101-00-13-10-02-05 be used with a non-Bently Nevada driver?
A: The probe is an eddy current sensor operating at ~1 MHz. While physically compatible with some third-party drivers, scale factor and linearity are calibrated specifically for the Bently Nevada 3300 XL Proximitor®. Using a non-OEM driver will require full system recalibration and may void API 670 compliance.
Q: What is the maximum shaft surface speed this probe can measure?
A: There is no mechanical speed limitation — the probe is non-contact. The practical upper limit is determined by the 10 kHz frequency response, which supports shaft speeds up to approximately 600,000 RPM for 1× vibration measurement.
Q: How do I verify the probe is functioning correctly on-site?
A: With the Proximitor® powered and the probe in free air (no target), the output should read approximately –21 VDC (±0.5 V). At the nominal 1.0 mm (40 mil) gap to a 4140 steel target, output should be approximately –10.5 VDC. Deviation beyond ±5% indicates probe or cable fault.
Q: Is this probe suitable for cryogenic or high-temperature service?
A: The standard 330101-00-13-10-02-05 is rated to –35°C minimum. For cryogenic service below –35°C, Bently Nevada offers special low-temperature variants. The upper limit of +177°C covers most hot-section bearing housing installations; for higher temperatures, consult the 3300 XL High-Temperature probe series.
Q: What is the difference between the -02-05 and -02-10 suffix?
A: The final suffix denotes cable length: -02-05 = 5.0 m integral cable; -02-10 = 10.0 m integral cable. Total system cable length (probe + extension) must match the Proximitor® calibration — consult the 3300 XL system manual for allowable combinations.
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