Product Introduction
The part number 330130-040-00 refers to a Bently Nevada 3300 XL Proximity Probe System. This is a standard, widely-used eddy-current displacement transducer kit designed for non-contact monitoring of vibration and position on critical rotating machinery. The "-040-" segment in the part number specifically indicates a 4.0-meter cable length. It is a complete, factory-calibrated assembly, providing a reliable and ready-to-install solution for generating a precise gap voltage signal for input to monitoring systems such as the 3500 series.
Technical Parameters & Specifications
| Parameter Category | Specification |
|---|---|
| Product Line / Model | Bently Nevada 3300 XL 8mm Proximity Transducer System |
| System Components | One 8mm diameter proximity probe, one integrated 4.0-meter coaxial extension cable, and one proximitor (driver/demodulator). |
| Measurement Type | Non-contact, eddy-current displacement. |
| Probe Diameter | 8 mm (0.315 inches) – The industry-standard size for general vibration and position monitoring. |
| Sensitivity (Calibrated) | -7.87 V/mm or -200 mV/mil (± 2%), calibrated for a mild steel (AISI 4140) target. |
| Linear Range | Typically 0.25 to 2.3 mm (10 to 90 mils) from the probe tip. |
| Frequency Response | 0 to 10 kHz (± 3 dB). Suitable for measuring from very low speeds to very high frequencies. |
| Target Material | Ferrous steel (e.g., AISI 4140). Requires compensation for other conductive materials. |
| Output Signal | A DC voltage proportional to the average gap (Gap Voltage) and an AC voltage proportional to dynamic vibration. |
| Power Requirement | Typically -24 VDC supplied from a compatible monitor (e.g., 3500 series rack). |
| Operating Temperature | Probe: Up to 177°C (350°F) for standard versions. Cable & Proximitor: Up to 120°C (248°F). |
| Total Cable Length | 4.0 meters (13.1 feet) as specified by "-040-" in the part number. |
| Connector | Standard, typically a Mil-C-5015 style connector. |
| Dimensions & Weight | Probe Dimensions: ~ Ø8mm sensing tip. Common threaded body length is ~ 25mm or 50mm. Proximitor Dimensions: ~ 80mm L x 40mm W x 25mm H (3.15" x 1.57" x 1.0"). Approximate Total Weight (Entire 4m System): 0.9 - 1.1 kg (2.0 - 2.4 lbs). |
| Key Features | Factory calibrated, integral cable design for improved reliability, intrinsically safe design. |
Application Scenarios
This 4-meter cable version is one of the most common standard lengths, ideal for applications where the monitoring rack or termination point is within a moderate distance from the measurement point on the machine.
General Turbine & Generator Monitoring: Measuring radial shaft vibration, eccentricity, and speed (Keyphasor®) on steam and gas turbines in power plants where junction boxes are located near the machine.
Centrifugal Compressors: Vibration monitoring on compressors in refinery, petrochemical, and gas processing plants. The 4-meter length is suitable for most skid-mounted applications.
Pumps (Critical Service): Monitoring vibration on high-energy boiler feed pumps, injection pumps, and cooling water pumps to detect imbalance, misalignment, and bearing issues.
Fans & Blowers: Protecting large induced draft (ID) and forced draft (FD) fans in power generation and heavy industry.
Axial Thrust Position Monitoring: Used in pairs with a thrust position monitor (e.g., 3500/42M) to measure rotor axial movement on turbines and compressors. The 4m length is often sufficient for this dedicated measurement.
Note: The "-00" revision should be checked against the official datasheet for the most current specifications. For critical applications, always consult the official Baker Hughes Bently Nevada product documentation for the exact probe threading, temperature ratings, and connector details of part number 330130-040-00.
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