Product Brief: Bently Nevada 330901-00-65-05-02-05 (3300 NSv 5mm Proximity Probe System)
The 330901-00-65-05-02-05 is a complete 3300 NSv 5mm Proximity Probe System from Bently Nevada (GE Measurement & Control). The 3300 NSv (Next Generation Standard – 5mm) series is a compact, high-performance eddy current probe system designed for space-constrained installations where the standard 8mm probe cannot fit. This system includes the probe tip, integral cable, and Proximitor (driver/conditioner) as a factory-matched set.
It is used for non-contact measurement of shaft relative vibration, axial (thrust) position, eccentricity, and differential expansion on smaller rotating machinery or in tight bearing housing areas.
Part Number Breakdown
| Position | Code | Meaning |
|---|---|---|
| 330901 | - | 3300 NSv 5mm Proximity Probe System |
| 00 | - | Standard probe tip (unthreaded, 5mm diameter) |
| 65 | - | Probe case length: 65 mm (2.56 in) |
| 05 | - | Cable length: 5.0 meters (16.4 feet) |
| 02 | - | Connector type: BNC connector (Proximitor end) |
| 05 | - | Special options / certifications (standard) |
Key Features
Compact 5mm probe – fits in space-limited bearing housings (smaller than 8mm probes).
Complete system – probe, integral cable, and Proximitor matched and calibrated.
3300 NSv series – improved linearity, temperature stability, and interchangeability.
Short case length (65 mm) – minimizes probe protrusion into housing.
Non-contact eddy current principle – measures displacement without shaft contact.
Hermetically sealed probe tip – resistant to oil, dirt, and moisture.
Compatible with 3500, 1900, and standalone monitoring systems (with proper scaling).
Parameters (Table)
| Parameter | Specification |
|---|---|
| Model Series | 3300 NSv (Next Generation Standard – 5mm) |
| Part Number | 330901-00-65-05-02-05 |
| Product Type | Complete 5mm proximity probe system (probe + cable + Proximitor) |
| System Components | Probe tip + integral cable + Proximitor (driver) |
| Probe Diameter | 5 mm (0.20 in) |
| Probe Tip Material | PEEK (polyetheretherketone) – hermetically sealed |
| Probe Case Length (suffix 65) | 65 mm (2.56 in) – from probe tip to cable exit |
| Total Cable Length (suffix 05) | 5.0 meters (16.4 ft) – integral, non-extensible |
| Probe Weight (approx.) | 0.06 kg (0.13 lb) – probe only |
| Cable Weight (approx.) | 0.06 kg/m (0.04 lb/ft) – cable only ≈ 0.30 kg (0.66 lb) for 5m |
| Proximitor Weight (approx.) | 0.20 kg (0.44 lb) |
| Total System Weight (approx.) | 0.56 kg (1.23 lb) |
| Connector Type (suffix 02) | BNC male (connects to Proximitor input) |
| Proximitor Model | 3300 NSv Proximitor (built-in oscillator, demodulator) |
| Proximitor Output Signal | -0.8 VDC to -22 VDC (proportional to gap) |
| Linear Range | 0.20 mm to 2.00 mm (8 mils to 80 mils) |
| Sensitivity | 7.87 mV/µm (200 mV/mil) ± 6% (typical) |
| Target Material | AISI 4140 steel (standard calibration) |
| Frequency Response | 0 to 10 kHz (-3 dB) |
| Supply Voltage (Proximitor) | -17.5 VDC to -26 VDC (nominal -24 VDC) |
| Supply Current | 10 mA typical |
| Operating Temperature (Probe) | -51°C to +150°C (-60°F to +302°F) |
| Operating Temperature (Proximitor) | -35°C to +85°C (-31°F to +185°F) |
| Storage Temperature | -51°C to +85°C (-60°F to +185°F) |
| Minimum Bend Radius (cable) | 25 mm (1.0 in) – dynamic; 13 mm (0.5 in) – static |
| Enclosure Rating (Proximitor) | IP67 (when properly sealed) |
| Approvals | CE, CSA, ATEX (with IS barriers) |
Application Scenarios (use cases)
| Application Area | Description |
|---|---|
| Small Steam Turbine (< 10 MW) | Compact 5mm probes fit in tight bearing housings of smaller industrial turbines (e.g., steam turbine drives for pumps or generators). |
| Turboexpander (LNG / Cryogenic) | Space-limited expander housings require 5mm probes – 65mm case length minimizes interference with rotating components. |
| Centrifugal Compressor (Small Frame) | Smaller high-speed compressors often have limited probe mounting depth – 5mm probe provides required clearance. |
| High-Speed Gearbox Pinion Bearings | Monitors vibration on pinion shafts where bearing housing bore diameter is too small for 8mm probes. |
| Blower / Fan (Critical Service) | API 617 or 673 compliance for smaller fans/blowers – 5mm probes provide adequate range for shaft displacement monitoring. |
| Turbocharger / Supercharger Test Stand | Compact bearings in turbocharger development require 5mm probe diameter for accurate clearance measurement. |
| Screw Compressor (Oil-Free) | Limited access ports on screw compressor housings – short 65mm case length fits without modification. |
| Retrofit of 3300 5mm Systems | Direct replacement for older 3300 5mm probes in existing machinery (same footprint, improved performance). |
Notes
3300 NSv = Next Standard version – replaces older 3300 5mm series with improved temperature stability and interchangeability.
5mm probe diameter is smaller than the standard 8mm (3300 XL series). It provides slightly reduced linear range (0.20–2.00 mm vs. 0.25–2.29 mm for 8mm).
Not interchangeable with 8mm systems – Proximitor, probe, and cables are specific to 5mm series. Do not mix with 3300 XL 8mm components.
Extension cables available – For longer runs beyond 5.0m, use 3300 NSv extension cable (330902-X0-XX) – maximum total length 305 m (1000 ft).
Right-angle probe version available – For even tighter installations, order 330911-00-65-05-02-05 (right-angle tip).
Not intrinsically safe by itself – for hazardous area installations, use 3300 NSv IS system (intrinsically safe Proximitor + IS barriers).
Target material correction – Calibrated for AISI 4140 steel. For other target materials (stainless, titanium, aluminum), a sensitivity correction factor may be required.
Global direct procurement guarantee
All products are purchased directly from overseas original manufacturers or authorized channels, 100% guaranteed genuine quality, sufficient spot inventory, and comprehensive model coverage
Quality Commitment
Each product has been tested by our technicians, providing 12-month long warranty, worry-free after-sales
Flexible procurement plan
- Bulk order enjoys Friendship discount (2 pieces or more can be applied)
- Long-term cooperative customers can apply for priority supply
Full service support
7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
Why do so many customers choose us?
On the basis of the same quality, we provide:
- More competitive price system
- Faster logistics response
- More complete technical support (free product technical documentation)
Your trust is the driving force for our continuous progress, submit your requirements immediately to get exclusive quotes
