Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330101-00-55-10-02-05 |
| Brand | Bently Nevada |
| Product Type | 3300 XL 8 mm Eddy Current Proximity Probe |
| Origin | USA |
| Dimensions | 8 mm probe tip diameter; 5.5 inch overall case length |
| Operating Temp | -51 deg C to +177 deg C |
| Power Consumption | Passive probe element; requires Bently Nevada Proximitor sensor excitation |
| Measurement Principle | Eddy-current non-contact displacement measurement |
| Linear Range | 2.0 mm (80 mils) |
| Incremental Scale Factor | 7.87 V/mm (200 mV/mil) +/- 5% nominal |
| Frequency Response | DC to 10 kHz (+0, -3 dB) |
| Target Material | AISI 4140 steel calibration target |
| Thread Type | 3/8-24 UNF |
| Case Material | AISI 304 stainless steel |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Cable Type | 75 ohm coaxial cable |
| Cable Length | 1.0 meter integrated cable |
| Connector Type | Miniature coaxial ClickLoc connector |
| Agency Approval | CSA, ATEX, IECEx hazardous area approvals |
Eddy Current Probe Scaling and Gap Voltage Validation
The 330101-00-55-10-02-05 uses Bently Nevada eddy-current measurement technology to convert shaft displacement into a proportional DC voltage output. The probe maintains a calibrated scale factor of 7.87 V/mm for distance measurement between the probe tip and conductive shaft surface.
The installation requires correct gap voltage validation through the connected Proximitor sensor. The standard operating target uses a -10 VDC gap voltage reference to confirm the probe position within the calibrated linear range. Therefore, technicians verify the mechanical gap before commissioning vibration and axial position monitoring functions.
The probe also supports rotor dynamics analysis by providing displacement signals required for shaft orbit, vibration amplitude, and axial movement evaluation.
Frequently Asked Questions
Q: What measurement signal does the 330101-00-55-10-02-05 provide?
A: The probe generates an eddy-current displacement signal that changes according to the distance between the probe tip and the conductive target surface.
Q: Can this probe operate without a Proximitor sensor?
A: No. The probe requires a compatible Bently Nevada Proximitor sensor to provide excitation and convert the probe signal into monitoring system input data.
Q: What connector configuration does this model use?
A: This model uses a miniature coaxial ClickLoc connector with a standard cable configuration for connection to compatible 3300 XL system components.
Field Installation Guidelines
- Install the probe with the 3/8-24 UNF threaded mounting interface according to the mechanical drawing requirements.
- Verify the probe tip faces the correct conductive shaft target area before applying the monitoring system excitation.
- Adjust the mechanical gap and confirm the -10 VDC gap voltage reference through the connected Proximitor sensor.
- Route the 75 ohm coaxial cable away from high-current power conductors to reduce electromagnetic interference.
- Maintain proper cable shielding and grounding practices according to the monitoring system installation requirements.
- Avoid excessive mechanical stress on the ClickLoc connector and integrated cable during installation.
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