Bently Nevada 330102-08-50-10-02-05 – Eddy Current Proximity Probe | 3300 XL 8mm Transducer System
Engineering Background: The Bently Nevada 3300 XL Series represents the industry benchmark for non-contacting vibration and position measurement in rotating machinery protection systems. Engineered to API 670 standards, this probe system is the preferred choice for turbines, compressors, pumps, and motors in critical process industries worldwide.
Product Positioning: The 330102-08-50-10-02-05 is an 8mm eddy current proximity probe with a 5-meter (50 cm + extension) armored cable, designed for continuous shaft vibration, axial position, and differential expansion monitoring. It integrates seamlessly with Bently Nevada 3300 XL proximitor/seismic monitors and Orbit 60 Series systems.
Complete Technical Specifications
| Part Number | 330102-08-50-10-02-05 |
| Series / Platform | Bently Nevada 3300 XL 8mm Proximity Transducer System |
| Probe Type | Eddy Current Non-Contacting Proximity Probe |
| Tip Diameter | 8 mm |
| Cable Length | 5.0 m (armored, integral) |
| Sensitivity | 200 mV/mil (7.87 V/mm) |
| Linear Range | 0.25 mm – 2.25 mm (10 – 90 mil) |
| Bias Voltage | -10.0 VDC (nominal at mid-range) |
| Supply Voltage | -24 VDC |
| Frequency Response | DC – 10,000 Hz (–3 dB) |
| Temperature Range | -35°C to +177°C (probe tip); -35°C to +85°C (cable) |
| Target Material | AISI 4140 Steel (standard); consult factory for other alloys |
| Connector | MIL-C-5015 style, 2-pin |
| Housing Material | 316 Stainless Steel |
| Ingress Protection | IP67 |
| Compliance | API 670, CE, ATEX (consult datasheet for zone ratings) |
| Compatible Monitor | Bently Nevada 3300 XL, 3500 Series, Orbit 60 |
| Weight | ~100 g |
| Country of Origin | USA |
Proven Application Environments
- Steam & Gas Turbines – Shaft radial vibration and thrust position monitoring per API 670
- Centrifugal Compressors – Continuous rotor orbit and differential expansion measurement
- Pumps & Motors – Bearing journal vibration detection in petrochemical and power generation
- Gearboxes – Gear mesh frequency analysis and shaft eccentricity monitoring
- Expanders / Turboexpanders – Cryogenic and high-speed rotor dynamics
- Marine Propulsion Systems – Shaft alignment and vibration in offshore environments
Engineering Advantages
- Non-contacting measurement – Zero mechanical wear; continuous operation without maintenance intervals
- High-frequency response – DC to 10 kHz bandwidth captures sub-synchronous, synchronous, and super-synchronous vibration components
- Armored cable construction – Resistant to oil, steam, and chemical exposure in harsh plant environments
- API 670 compliant – Drop-in replacement for existing 3300 XL installations; no recalibration required
- 316 SS housing – Corrosion-resistant for offshore, chemical, and high-humidity applications
- Wide temperature tolerance – Probe tip rated to +177°C for hot-section turbine installations
System Architecture & Signal Flow
The 330102-08-50-10-02-05 operates as part of a three-component transducer system:
- Proximity Probe (330102-08-50-10-02-05) – Generates eddy current field; outputs raw impedance signal via integral 5m cable
- Extension Cable (330130 Series) – Extends signal path from probe to proximitor; total system cable length must equal 5m, 9m, or 15m
- Proximitor Sensor (330180 / 330185 Series) – Conditions signal, provides -24 VDC excitation, outputs -24V to 0V DC proportional voltage to monitor
Signal output feeds directly into Bently Nevada 3300 XL or 3500 Series monitor cards for real-time vibration, position, and alarm/trip processing.
Sourcing & Quality Verification
- ✅ OEM-traceable stock – Units sourced from authorized distributors and verified surplus with full part number and date code inspection
- ✅ Functional testing – Each unit tested for bias voltage output, sensitivity linearity, and cable continuity prior to shipment
- ✅ Original packaging – Shipped in anti-static, moisture-barrier packaging with original Bently Nevada labels where available
- ✅ Certificate of Conformance – Available upon request for regulated industries
- ✅ Counterfeit prevention – All units inspected against Bently Nevada OEM markings, connector type, and cable construction standards
Procurement Process
- Confirm compatibility – Verify your proximitor model (330180/330185) and total cable length requirement (5m / 9m / 15m system)
- Request quote – Contact support@konmask.com for volume pricing, lead time, and availability confirmation
- Place order – Purchase via Konmask.com secure checkout; HKD, USD, and major currencies accepted
- Shipping – DHL / FedEx express worldwide; export documentation and commercial invoice provided
- After-sales support – Technical assistance available for installation, calibration gap setting, and system integration
Technical FAQ
Q: What is the correct gap voltage for the 330102-08-50-10-02-05?
A: The nominal gap (mid-range) is 1.27 mm (50 mil), corresponding to a bias voltage of approximately -10.0 VDC with a 330180 proximitor on a 4140 steel target.
Q: Can this probe be used with a 3500 Series monitor?
A: Yes. The 3300 XL 8mm probe system is compatible with Bently Nevada 3500/42M and 3500/40M monitor modules when used with the appropriate proximitor.
Q: What is the maximum operating temperature at the probe tip?
A: The probe tip is rated to +177°C (350°F). For applications exceeding this, consult Bently Nevada for high-temperature probe options.
Q: Is a Certificate of Conformance available?
A: Yes. CoC is available upon request. Please specify requirements at time of order.
Q: What target materials are compatible?
A: AISI 4140 steel is the standard calibration target. Other ferromagnetic and non-ferromagnetic alloys will affect sensitivity — consult the 3300 XL system datasheet for correction factors.
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