Bently Nevada 330903-00-21-50-02-00 3300 XL NSv Proximity Transducer System | Replacement, Equivalent & Selection Guide
The Bently Nevada 330903-00-21-50-02-00 is a high-precision proximity transducer system from the 3300 XL NSv series, engineered for continuous non-contact vibration and position measurement in rotating machinery. Widely deployed in turbines, compressors, pumps, and motors across oil & gas, power generation, and heavy industry, this transducer system delivers reliable eddy-current sensing with exceptional signal stability.
At Konmask.com, we supply genuine and compatible units with full traceability — serving B2B industrial buyers who demand spec-accurate, field-ready components.
Technical Specifications
- Part Number: 330903-00-21-50-02-00
- Series: Bently Nevada 3300 XL NSv
- Type: Eddy-Current Proximity Transducer System
- Probe Length: 21 mm (standard)
- Cable Length: 5.0 m (extension cable)
- Measurement Range: 0–2.0 mm (standard gap range)
- Sensitivity: 7.87 V/mm (200 mV/mil)
- Supply Voltage: −24 VDC (nominal)
- Output: −2 to −18 VDC (linear range)
- Operating Temperature: −35°C to +121°C (probe); −35°C to +66°C (driver)
- Target Material: AISI 4140 steel or equivalent
- Connector: Integral coaxial, armored cable
- Approvals: CE, ATEX, FM (intrinsically safe options available)
- Weight: ~40 g (probe assembly)
Compatible Replacement & Equivalent Models
The following models are functionally equivalent or direct replacements for the 330903-00-21-50-02-00. Always verify gap range, cable length, and driver compatibility before substitution:
- 330903-00-21-05-02-00 — Same probe, 0.5 m cable variant
- 330903-00-21-10-02-00 — Same probe, 1.0 m cable variant
- 330903-00-21-30-02-00 — Same probe, 3.0 m cable variant
- 330180-91-00 — 3300 XL 8 mm standard proximity transducer (alternative range)
- 330780-50-00 — 3300 XL 5 mm proximity transducer system
- 330101-00-06-10-02-00 — 3300 NSv 6 mm probe system (shorter range)
- Emerson / Bently Nevada 3300 XL Series — All share compatible Proximitor driver architecture
Note: Third-party equivalents from Epro, Metrix, or Wilcoxon may be mechanically compatible but require driver recalibration. Contact us for cross-reference support.
Why Choose the Original Model
- ✅ Factory-calibrated to Bently Nevada Proximitor driver specifications — no field adjustment required
- ✅ Certified signal linearity across full temperature range — critical for API 670 compliance
- ✅ Armored coaxial cable resists EMI, mechanical stress, and chemical exposure
- ✅ Proven MTBF in continuous 24/7 industrial environments
- ✅ OEM traceability — full documentation available for audit and maintenance records
Typical Applications
- Steam and gas turbine shaft vibration monitoring
- Centrifugal compressor radial and axial position measurement
- Pump and motor bearing displacement sensing
- Gearbox and fan shaft eccentricity detection
- API 670 machinery protection systems
- Condition monitoring and predictive maintenance programs
System Compatibility
The 330903-00-21-50-02-00 is designed to operate with the following Bently Nevada systems:
- 3500 Series Machinery Protection System (3500/42M, 3500/40M modules)
- 3300 XL Proximitor signal conditioner (330180, 330780 series)
- System 1 condition monitoring software
- Orbit 60 Series machinery protection platform
- Third-party DCS/SCADA systems via 4–20 mA or voltage output interface
Selection Guide
Use the table below to select the correct 330903 variant for your application:
- Probe diameter: 8 mm (standard for 330903 series)
- Cable length code: -05 = 0.5 m | -10 = 1.0 m | -21 = 2.1 m | -30 = 3.0 m | -50 = 5.0 m ← this unit
- Driver code: -02-00 = standard Proximitor driver (3300 XL compatible)
- Gap range: 0–2.0 mm standard; confirm target material is AISI 4140 or equivalent
- Temperature class: Standard (-35°C to +121°C probe); high-temp variants available on request
💡 Not sure which variant fits your system? Send us your existing part number or Proximitor model — our engineers will confirm compatibility within 24 hours.
Quality Assurance & Sourcing
- All units sourced from authorized distributors or verified surplus channels
- Pre-shipment inspection: visual, dimensional, and electrical continuity checks
- Packaging: anti-static, moisture-barrier, original or equivalent OEM packaging
- Documentation: CoC (Certificate of Conformance), datasheet, and test report available on request
- Lead time: in-stock units ship within 1–3 business days; sourced units 5–15 days
How to Order
- Confirm part number: 330903-00-21-50-02-00
- Specify quantity and required delivery date
- Request a quote via support@konmask.com or add to cart directly
- Provide your shipping address and preferred freight method (DHL / FedEx / sea freight)
- Receive order confirmation and tracking within 24 hours of payment
Replacement & Compatibility FAQ
Q: Can I use 330903-00-21-50-02-00 with a 3500 Series rack?
A: Yes. The 3300 XL NSv transducer is fully compatible with 3500/42M and 3500/40M proximity monitor modules when used with the appropriate Proximitor driver.
Q: What is the difference between 330903 and 330180 series?
A: The 330903 is an 8 mm NSv probe optimized for the 3300 XL driver architecture. The 330180 is a standard 8 mm probe with slightly different sensitivity calibration. They are not always interchangeable without recalibration.
Q: Is a third-party replacement safe to use?
A: Third-party probes may fit mechanically but can introduce calibration errors. For API 670-compliant systems, we recommend OEM or OEM-equivalent units with documented calibration certificates.
Q: Do you offer expedited shipping to Europe or the Middle East?
A: Yes. We ship globally via DHL Express, FedEx International Priority, and sea freight. Contact us for a freight quote.
Q: Can you supply the matching Proximitor driver?
A: Yes. We stock compatible 3300 XL Proximitor drivers. Request a bundle quote for probe + driver system pricing.
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