Product: 330130-075-01-05
Category: High-Temperature Proximity Transducer System / Eddy-Current Displacement Probe
Overview:
The 330130-075-01-05 is a specialized 8mm diameter proximity probe system from the Bently Nevada 3300 XL series, engineered for high-temperature environments. The part number specifies a complete assembly with a 75 mm (≈3.0 in) extended tip (-075) and a 5-meter (≈16.4 ft) total integrated cable length (-05). The -01 suffix typically indicates a version with specific high-temperature cable and connectors. It is designed for non-contact vibration and position measurement on machinery where sensors must operate reliably in elevated ambient temperatures or near hot casings.
Key Parameters & Specifications
| Parameter | Specification / Description |
|---|---|
| System Function | Eddy-current displacement measurement for vibration and position in high-temperature environments. |
| Probe Diameter | 8 mm (0.315 inches) – Standard size for compatibility with common mounting holes. |
| Probe Tip Length | Extended Length: 75 mm (2.95 inches) from mounting nut to sensing tip. This extra length helps position the sensitive electronics and cable boot away from a hot surface. |
| Total Cable Length | 5 meters (16.4 feet) of continuous, integral high-temperature cable from probe head to connector. |
| Linear Range | Standard: 0.25 to 2.3 mm (10 to 90 mils) from the probe tip. Scale factor: 7.87 V/mm (200 mV/mil) for standard steel targets. |
| Frequency Response | 0 to 10 kHz. |
| Target Material | Ferrous or non-ferrous conductive metals (calibration required for specific material). |
| Temperature Rating (Key Feature) | Enhanced High-Temperature Capability. Probe body and tip can withstand up to 177°C (350°F) continuous, with the high-temperature cable and connector assembly (-01) designed for elevated ambient temperatures along its run. |
| Output Signal | -1 to -17 Vdc linear analog signal proportional to gap. Requires a compatible proximitor (e.g., 330180 series). |
| Connectors | Typically features a high-temperature rated MIL-C-5015 or SMB connector at the cable end. |
| Mounting | Threaded for standard 11 mm mounting hole. The extended 75mm tip requires adequate clearance from hot surfaces to the mounting point. |
| Cable Jacket | Special high-temperature, thermally-resistant fluoropolymer (e.g., PFA, Teflon) to prevent degradation in hot environments. |
| Probe Body & Tip | Stainless steel body with a high-temperature-rated sensing coil tip (often ceramic-filled). |
| Dimensions (Probe Assembly) | Body Diameter: 8 mm at threads. Tip Length: 75 mm. Overall length with 5m cable is variable when deployed. |
| Weight (Approx.) | ~0.8 kg (1.76 lbs) for the probe and 5-meter integral cable assembly. |
Primary Application Scenarios
Gas Turbine & Steam Turbine Monitoring:
Critical for measuring radial vibration and axial position (thrust) on turbines where probe mounting locations are in close proximity to extremely hot casings, steam chests, or exhaust sections. The extended tip and high-temperature cable are essential.
High-Temperature Compressor Applications:
Used on syngas compressors, high-pressure barrel compressors, and other process compressors where the gas discharge temperature elevates the casing and ambient temperature around the probe.
Applications with Significant Heat Soak or High Ambient Temperatures:
Any machinery located in poorly ventilated enclosures, near furnaces, or in direct sunlight in desert environments where standard probe cable insulation may fail.
General Machinery Protection with Thermal Challenges:
Petrochemical & Refining: Areas near cracking units or reformers.
Cement & Metals: Kiln drives and hot gas fans.
Power Generation: Areas near boiler casings.
An upgraded, more robust choice for standard applications (like pumps and motors) in industries known for high ambient temperatures, such as:
Extended Reach Requirements:
The 75mm tip length is also functionally useful for applications where the probe must reach through a thick casing, insulation, or a cooling jacket to sense the shaft.
Important Note: This is a specialized probe for thermal durability. It must be used with a compatible 3300 XL NSv series Proximitor. The exact temperature limits and cable specifications should be verified against the "3300 XL 8 mm and 11 mm High Temperature Proximity Transducer" data sheet from Baker Hughes Bently Nevada. Always ensure the selected model (-01) matches the specific environmental requirements of the installation point.
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