Bently Nevada 330703-020-110-10-01-05 – Non-Contact Proximity Transducer System | 3300 XL Series
Engineering Background
The Bently Nevada 3300 XL Series represents the industry benchmark for eddy-current proximity sensing in rotating machinery protection. Engineered for continuous, non-contact measurement of shaft radial vibration, axial position, and differential expansion, this system is the preferred choice of reliability engineers and OEM integrators worldwide operating under API 670 machinery protection standards.
Product Positioning
The 330703-020-110-10-01-05 is a complete proximity transducer system comprising a probe, extension cable, and Proximitor® sensor. It delivers a calibrated, temperature-compensated output signal directly compatible with Bently Nevada 3500 Series rack monitors and legacy 3300 Series systems. Ideal for procurement engineers sourcing certified replacement or expansion components for critical turbomachinery, compressors, and pumps.
Complete Technical Specifications
| Part Number | 330703-020-110-10-01-05 |
| Brand / OEM | Bently Nevada (Baker Hughes) |
| Series / Platform | 3300 XL Proximity Transducer System |
| Measurement Type | Non-contact eddy-current displacement |
| Probe Tip Diameter | 8 mm (standard) |
| Linear Range | 0–5 mm (0–200 mil) |
| Nominal Gap | 1.27 mm (50 mil) |
| Scale Factor (Sensitivity) | 200 mV/mil (7.87 V/mm) |
| Frequency Response | DC to 10,000 Hz (–3 dB) |
| Operating Temperature | –35°C to +177°C (probe); –35°C to +85°C (Proximitor) |
| Supply Voltage | –24 VDC (nominal) |
| Output Voltage Range | –2 VDC to –18 VDC |
| Extension Cable Length | 1.0 m (110 = 11.0 m total system) |
| Probe Cable Length | 020 = 2.0 m |
| Target Material | AISI 4140 steel (standard); consult factory for non-ferrous |
| Ingress Protection | IP67 (probe assembly) |
| Approvals / Certifications | CE, ATEX, IECEx, FM (configuration-dependent) |
| Weight | 4.46 kg (system) |
| Country of Origin | United States |
Proven Application Environments
- Steam and gas turbine radial shaft vibration monitoring
- Centrifugal compressor rotor position and thrust measurement
- Pump and motor bearing journal orbit analysis
- Gearbox differential expansion and eccentricity measurement
- API 670-compliant machinery protection systems
- Petrochemical, LNG, power generation, and offshore platforms
Engineering Advantages
- Factory-matched system: Probe, cable, and Proximitor® are calibrated as a matched set — eliminates field calibration errors and ensures traceability.
- Wide temperature range: Probe rated to +177°C for high-temperature turbine environments without signal degradation.
- DC-coupled output: Simultaneous static (DC gap) and dynamic (AC vibration) measurement from a single output terminal.
- Drop-in replacement: Fully backward-compatible with 3300 Series monitors; plug-and-play with 3500 Series racks.
- Robust IP67 sealing: Suitable for wash-down, high-humidity, and splash-zone installations.
- Long cable system: 11-metre total system length accommodates remote Proximitor® mounting away from high-temperature zones.
System Architecture & Signal Flow
The 330703-020-110-10-01-05 operates as a three-component eddy-current system:
- Probe (330703): Generates a high-frequency electromagnetic field (1.0 MHz nominal). Eddy currents induced in the conductive target attenuate the field proportionally to gap distance.
- Extension Cable (020 / 110 coding): Transmits the oscillator signal between probe and Proximitor® with controlled impedance. Total system cable = 2.0 m probe + 9.0 m extension = 11.0 m.
- Proximitor® Sensor (01-05 suffix): Demodulates the oscillator signal, applies temperature compensation, and outputs a calibrated –2 to –18 VDC signal at 200 mV/mil scale factor. Powered by –24 VDC from the monitor rack.
Output is directly wired to Bently Nevada 3500/40M, 3500/42M, or equivalent proximity monitor cards without additional signal conditioning.
Sourcing & Quality Verification
- Authenticity: All units sourced from authorized distributors or verified surplus channels. Serial numbers traceable to Bently Nevada / Baker Hughes manufacturing records.
- Inspection: Each system undergoes incoming inspection — connector integrity, cable continuity, Proximitor® output voltage verification at nominal gap.
- Packaging: Ships in original or equivalent ESD-safe packaging with calibration data sheet where available.
- Lead Time: In-stock units ship within 1–3 business days. Contact us for volume or expedited requirements.
- Documentation: Certificate of conformance and test report available upon request.
Procurement Process
- Confirm part number 330703-020-110-10-01-05 matches your existing system configuration (probe diameter, cable length, Proximitor® suffix).
- Submit RFQ or place order directly via Konmask.com — no minimum order quantity.
- Receive order confirmation with estimated ship date within 4 business hours.
- Unit ships with packing list, inspection record, and tracking number.
- Post-delivery technical support available via email or phone.
Technical FAQ
Q: Is this a complete system or individual components?
A: This listing is for the complete matched system — probe + extension cable + Proximitor® sensor — as indicated by the full part number 330703-020-110-10-01-05.
Q: What monitor racks is this compatible with?
A: Compatible with Bently Nevada 3500 Series (3500/40M, 3500/42M, 3500/46M) and legacy 3300 Series monitors. Verify Proximitor® output range (–2 to –18 VDC) matches your monitor input specification.
Q: Can this probe measure non-steel targets?
A: The standard calibration is for AISI 4140 steel. For non-ferrous or exotic alloy targets, a custom calibration factor is required — contact our engineering team before ordering.
Q: What is the difference between the -01 and -05 suffix?
A: The suffix codes define the Proximitor® housing style and connector configuration. The -01-05 variant specifies the standard DIN-rail mountable Proximitor® with flying-lead output. Confirm against your existing installation drawings.
Q: Do you provide ATEX-certified units?
A: ATEX/IECEx certification is configuration-dependent. Please specify your hazardous area classification (Zone, Gas Group, Temperature Class) when requesting a quote.
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