Product Introduction
The Bently Nevada 330707-00-25-10-12-00 3300 XL 11 mm Proximity Probe is a high-performance vibration and displacement sensor developed for continuous monitoring of critical rotating machinery. As a member of the trusted 3300 XL proximity transducer family, this probe uses advanced eddy-current sensing technology to measure shaft movement without physical contact, ensuring accurate data while minimizing mechanical wear.
The 11 mm probe design provides a larger sensing tip and extended linear measurement capability, making it particularly suitable for demanding applications such as thrust position measurement and differential expansion monitoring in turbines. With its durable stainless-steel housing, high-temperature capability, and stable electrical performance, the probe delivers dependable monitoring in harsh industrial environments.
This model is widely used in machinery protection systems to help operators detect early signs of vibration abnormalities, misalignment, or mechanical wear before they lead to costly equipment failures.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330707-00-25-10-12-00 |
| Product Type | 3300 XL 11 mm Proximity Probe |
| Probe Diameter | 11 mm |
| Thread Type | 5/8-18 UNF |
| Unthreaded Length | 0 in |
| Case Length | 2.5 in |
| Cable Length | 1.0 m (3.3 ft) |
| Connector Type | Miniature ClickLoc™ coaxial connector |
| Measurement Principle | Eddy-current proximity sensing |
| Output Sensitivity | 3.94 V/mm (100 mV/mil) |
| Operating Voltage | −17.5 VDC to −26 VDC |
| Operating Temperature | −52°C to +177°C |
| Probe Housing Material | AISI 304 stainless steel |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Dimensions | 64 × 30 × 30 mm |
| Weight | Approximately 0.17 – 0.32 kg |
Applications
The 3300 XL 11 mm proximity probe is designed for high-precision monitoring of large rotating equipment, especially where extended measurement range is required.
Common industrial applications include:
-
Steam and gas turbine thrust position monitoring
-
Differential expansion measurement in turbines
-
Centrifugal compressors in petrochemical plants
-
Industrial pumps and electric motors
-
Power generation equipment
-
Oil and gas processing machinery
-
Heavy-duty fans and blowers
The larger probe tip improves signal stability and measurement range compared with standard 8 mm probes, making it ideal for fluid-film bearing machines and high-load rotating equipment.
Applications
The 3300 XL 11 mm proximity probe is designed for high-precision monitoring of large rotating equipment, especially where extended measurement range is required.
Common industrial applications include:
-
Steam and gas turbine thrust position monitoring
-
Differential expansion measurement in turbines
-
Centrifugal compressors in petrochemical plants
-
Industrial pumps and electric motors
-
Power generation equipment
-
Oil and gas processing machinery
-
Heavy-duty fans and blowers
The larger probe tip improves signal stability and measurement range compared with standard 8 mm probes, making it ideal for fluid-film bearing machines and high-load rotating equipment.
Advantages
Extended Measurement Range
The 11 mm sensing tip allows a longer linear range than the 8 mm probe series, making it suitable for demanding axial position and thrust measurements.
Industrial-Grade Durability
Constructed with AISI 304 stainless steel and a PPS sensing tip, the probe offers excellent resistance to corrosion, heat, and industrial contaminants.
High-Temperature Capability
With an operating range up to 177°C, the probe performs reliably in turbines, compressors, and other high-temperature machinery.
Reliable Signal Transmission
The ClickLoc miniature coaxial connector ensures stable signal transfer and simplifies installation.
Proven Compatibility with 3300 XL Systems
Designed to operate with 3300 XL extension cables and proximitor sensors, enabling seamless integration into existing vibration monitoring systems.
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