
Introduction
The EPRO 330103-00-09-10-02-CN is a specific configuration of an 8 mm Eddy Current Proximity Probe from the EPRO (Baker Hughes) PR 6423 series. This sensor is a fundamental component used for non-contact measurement of relative vibration and positional changes of rotating shafts in machinery protection systems.
Operating on the eddy current principle, the probe generates an electromagnetic field at its tip. When this field interacts with a conductive target (such as a machine shaft), eddy currents are induced. The sensor measures the change in the field's strength to precisely determine the distance to the target, allowing it to monitor both dynamic motion (vibration) and static position. This specific variant is defined by its 4.5-meter integrated cable and 2 mm linear range, with the -CN suffix indicating it is configured or certified for the Chinese market.
Parameters / Specifications
The key technical specifications for the EPRO 330103-00-09-10-02-CN are summarized in the table below.
| Parameter | Specification |
|---|---|
| Part Number | 330103-00-09-10-02-CN |
| Product Line / Type | EPRO (Baker Hughes) PR 6423 Series Eddy Current Proximity Probe |
| Probe Diameter | 8 mm |
| Thread Size | M10 x 1.0 |
| Sensitivity | -8.0 V/mm (± 5%) / -200 mV/mil |
| Linear Range | 2.0 mm (This is a key interpretation of the -02 suffix, e.g., 1.0 mm to 3.0 mm) |
| Operating Temperature | -35°C to +150°C (-31°F to +302°F) for probe; -35°C to +120°C for cable |
| Power Supply | Provided by the connected proximitor (e.g., -24 V DC from PR 6426) |
| Output Signal | A modulated RF signal requiring a dedicated proximitor for demodulation |
| Cable Length | 4.5 meters (This is a key interpretation of the -09 suffix in the part number) |
| Connector | Integrated, unconnectorized cable (This is a key interpretation of the -00 suffix) |
| Market Certification | CN (Configured/Certified for use in the Chinese market) |
| Mounting Thread | M10x1 (This is a key interpretation of the implied configuration) |
| Dimensions (Probe) | Body Diameter: 8 mm; Thread: M10 x 1.0; Length is application-specific |
| Weight (Probe only) | Approx. 0.15 lbs (0.07 kg) |
Note: This sensor must be used with a compatible proximitor (e.g., EPRO PR 6426) to form a complete and functional measuring chain. The -10 suffix typically specifies a standard temperature rating.
Application Scenarios
This 8 mm eddy current probe with extended cable length is designed for applications requiring longer distance connections while maintaining a wide measurement range.
Typical Application Scenarios:
Radial Vibration Monitoring:
Mounted on bearing housings of turbines and compressors to measure shaft vibration relative to the bearing housing, detecting unbalance, misalignment, and other mechanical faults
Axial Thrust Position Monitoring:
Installed at shaft ends to monitor rotor axial movement and prevent thrust bearing failure
Keyphasor® Reference Signal:
Used with once-per-revolution markers to provide timing references for vibration phase analysis and machine balancing
Long-distance Installation Requirements:
Suitable for applications where sensors are located far from junction boxes or monitoring equipment, such as in large turbine installations or complex machinery layouts
Industries of Use:
Power Generation (Gas, Steam, and Hydro Turbines)
Oil & Gas (Pipeline Compressors, Gas Turbines)
Petrochemical & Refining
Heavy Industrial Manufacturing
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