Bently Nevada 330701-00-050-10-12-05 – Eddy Current Proximity Probe | 3300 XL Series Platform
Engineering Background: The Bently Nevada 3300 XL proximity transducer system is the global benchmark for continuous shaft vibration and position monitoring in rotating machinery. Engineered to API 670 standards, this system is deployed across turbines, compressors, pumps, and motors in oil & gas, power generation, and petrochemical facilities worldwide.
Product Positioning: The 330701-00-050-10-12-05 is a 5 mm tip diameter eddy current proximity probe with a 5-metre (16.4 ft) integral cable, designed for direct integration into the 3300 XL monitoring system. It delivers non-contact, continuous measurement of radial shaft vibration, axial position, and differential expansion — critical parameters for machinery protection and predictive maintenance programs.
Complete Technical Specifications
- Part Number: 330701-00-050-10-12-05
- Series / Platform: Bently Nevada 3300 XL
- Probe Tip Diameter: 5 mm
- Cable Length: 5 m (16.4 ft) integral armored cable
- Thread Size: M10 × 1.0 mm
- Body Length: 12 mm
- Connector Type: 05 series (per Bently Nevada coding)
- Measurement Type: Eddy current (non-contact)
- Nominal Gap Range: 0.25 – 2.25 mm (10 – 90 mil)
- Scale Factor: 7.87 V/mm (200 mV/mil)
- Frequency Response: DC – 10,000 Hz
- Operating Temperature: –35 °C to +121 °C (–31 °F to +250 °F)
- Supply Voltage: –24 VDC (nominal), –20 to –26 VDC
- Output: –1 to –21 VDC (linear range)
- Target Material: AISI 4140 steel (or equivalent per calibration)
- Ingress Protection: IP67
- Compliance: API 670, CE, RoHS
- Weight: ~100 g
Proven Application Environments
- Steam and gas turbines (radial vibration, thrust position monitoring)
- Centrifugal and reciprocating compressors
- Boiler feed pumps and large motor-driven equipment
- Gearboxes and expanders in refinery and LNG service
- Hydro turbines and generator shaft monitoring
- Any API 670-compliant machinery protection system
Engineering Advantages
- Non-contact measurement — zero mechanical wear, unlimited service life under normal conditions
- DC response — captures both dynamic vibration and static position simultaneously
- High EMI immunity — armored cable construction rejects electrical noise in industrial environments
- Direct 3300 XL compatibility — plug-and-play with Bently Nevada monitors (3300/16, 3300/20, 3500 series with adapter)
- Calibrated scale factor — factory-calibrated to 7.87 V/mm for immediate commissioning without field adjustment
- IP67 rated — suitable for wash-down, humid, and splash-prone machinery environments
System Architecture & Signal Flow
The 330701-00-050-10-12-05 probe operates as part of a three-component eddy current transducer system:
- Probe (330701-00-050-10-12-05) — generates the eddy current field and senses shaft position
- Extension Cable (330130 series) — extends signal path from probe to driver (if required)
- Driver / Proximitor (330180 or 3300 XL 8mm driver) — conditions the signal and outputs –VDC proportional to gap
The driver output feeds directly into a 3300 or 3500 series monitor card for alarm, trip, and trending functions within the Bently Nevada System 1 or Orbit software environment.
Sourcing & Quality Verification
- All units sourced from authorized distributors or verified OEM-surplus channels
- Each probe inspected for physical integrity, connector condition, and cable continuity prior to shipment
- Original Bently Nevada labeling and part number markings verified
- Calibration certificates available upon request for critical applications
- Traceability documentation provided for regulated industries (nuclear, offshore, power generation)
Procurement Process
- Add to cart and complete checkout — secure payment via major cards, T/T wire transfer, or PayPal
- Order confirmation and proforma invoice issued within 1 business day
- Lead time: in-stock units ship within 2–5 business days; sourced units 7–15 business days
- Export documentation (commercial invoice, packing list, COO) included for international orders
- DHL / FedEx / UPS express available; sea freight for bulk orders
- Contact [email protected] for volume pricing, blanket POs, or urgent requirements
Technical FAQ
Q: Is this probe compatible with the Bently Nevada 3500 monitoring system?
A: The 330701 probe is natively designed for the 3300 XL system. It can interface with 3500 series monitors using the appropriate 3500/42M or 3500/45 proximity input module and a compatible driver. Confirm driver compatibility before ordering.
Q: What is the target material requirement?
A: The probe is factory-calibrated for AISI 4140 steel. Use on other materials (stainless steel, titanium, Inconel) requires a material correction factor or field recalibration. Contact us for application-specific guidance.
Q: Can I use this probe with a 3rd-party monitor (e.g., Emerson, Metrix)?
A: Yes, provided the monitor accepts a –VDC input signal at 7.87 V/mm scale factor and the driver supply voltage is compatible. Verify input impedance and supply requirements with your monitor manufacturer.
Q: What is the difference between the 330701 and 330730 probe series?
A: The 330701 is a 5 mm tip probe optimized for small shaft diameters and tight installation clearances. The 330730 is an 8 mm tip probe offering a wider linear range (0.25–2.54 mm) and higher signal output, preferred for larger shaft applications.
Q: Do you provide a warranty?
A: Yes. All units carry a 12-month warranty against manufacturing defects. Warranty claims are processed via RMA — contact [email protected] with your order number and fault description.
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