Product Introduction
The part number 330180-X1-R0 refers to a 3300 NSv Proximitor® Sensor, a key component of the Bently Nevada (Baker Hughes) machinery protection system. This is a specialized eddy current proximity probe system designed for non-contact measurement of vibration and position on rotating machinery. The "-X1" suffix typically indicates a specific cable length or connector configuration, while "-R0" often denotes a revision level. This sensor system is critical for monitoring relative shaft vibration, axial thrust position, rotor eccentricity, and speed (Keyphasor®) by precisely measuring the gap between the probe tip and the target metal surface.
Technical Parameters & Specifications
| Parameter Category | Specification |
|---|---|
| Product Line | Bently Nevada 3300 NSv Series Proximitor® Sensor |
| System Components | Includes a probe (transducer), extension cable, and proximitor (driver/demodulator). Part number 330180-X1-R0 often refers to the complete assembly. |
| Measurement Type | Non-contact, eddy-current displacement. |
| Target Material | Ferrous or non-ferrous conductive metals (e.g., steel, stainless steel). Requires calibration for specific material. |
| Standard Sensitivity | -7.87 V/mm or -200 mV/mil (± 2%). |
| Gap Measurement Range | Typically 0.25 to 2.3 mm (10 to 90 mils) from the probe tip. |
| Output Signal | A DC voltage proportional to the gap (Gap Voltage) and an AC voltage proportional to vibration. |
| Frequency Response | 0 to 10 kHz (-3 dB). Suitable for measuring vibrations from very low speeds (e.g., 300 RPM) to very high frequencies. |
| Power Supply | Typically -24 VDC supplied by the associated monitor (e.g., from a 3500 rack). |
| Probe Tip Diameter | Commonly 8 mm (standard for general vibration monitoring). |
| Operating Temperature | Probe: Up to 177°C (350°F) for standard versions. Extension Cable & Proximitor: Lower, usually up to 120°C (248°F). |
| Cable Length (Typical for -X1) | Often a 5-meter (16.4 ft) or 9-meter (29.5 ft) standardized assembly. The exact length should be verified from the datasheet. |
| Dimensions & Weight (Probe Assembly) | Probe: ~ Φ8mm x various lengths (e.g., 25mm, 50mm). Proximitor: Small metal case (~ 80mm x 40mm x 25mm). Approx. Total Weight (with 5m cable): 0.5 - 0.7 kg (1.1 - 1.5 lbs). |
| Key Feature | Intrinsically safe design (when used with approved barriers), robust for industrial environments. |
Application Scenarios
The 3300 NSv sensor is the industry-standard solution for protecting and monitoring critical rotating equipment across numerous sectors:
Steam & Gas Turbines: Monitoring radial shaft vibration and eccentricity on turbine-generator sets during start-up, operation, and coast-down.
Centrifugal & Axial Compressors: Essential for measuring vibration on high-speed compressor shafts in oil & gas production, refining, and pipeline applications to prevent seal rubs and blade failures.
Electric Motors & Generators: Detecting bearing wear, imbalance, and misalignment on large HV motors and generators before catastrophic failure occurs.
Pumps (High-Pressure/High-Speed): Monitoring vibration on boiler feed pumps, injection pumps, and charge pumps to ensure reliable operation and detect cavitation or impeller issues.
Fan & Blower Trains: Protecting large induced draft (ID) and forced draft (FD) fans in power plants and industrial processes.
Position Monitoring: Used in pairs for axial thrust position monitoring on turbines and compressors to prevent rotor-to-stator contact.
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