Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330880-16-00-075-00-02 |
| Brand | Bently Nevada |
| Product Type | Proximity Probe |
| Series | 3300 XL NSv Proximity Transducer System |
| Origin | USA |
| Weight | Not specified |
| Dimensions | 3/8-24 UNF threaded probe, smooth journal configuration |
| Operating Temp | -51 deg C to +177 deg C |
| Power Consumption | Supplied by compatible 3300 XL NSv Proximitor Sensor |
| Target Material | AISI 4140 steel calibration target |
| Measurement Type | Non-contact eddy-current displacement measurement |
| Linear Range | 1.52 mm (60 mils) |
| Scale Factor | 7.87 V/mm (200 mV/mil) with matching Proximitor Sensor |
| Frequency Response | 0 to 10 kHz |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Probe Case Material | 303 stainless steel |
| Cable Type | 75 ohm coaxial cable with FEP jacket |
| Total System Length | 7.5 m |
| Connector Type | Standard miniature coaxial connector |
Eddy-Current Probe Scaling and Rotor Dynamics
The 3300 XL NSv proximity probe uses eddy-current sensing technology to convert shaft displacement into proportional voltage output through the matched Proximitor Sensor. The system scaling is based on probe gap distance, target material characteristics, and oscillator response calibration.
The probe assembly is configured for rotor dynamics applications requiring measurement of shaft vibration and static position. The 1.52 mm linear range supports monitoring of relative shaft movement in fluid-film bearing machines where installation clearance is limited.
Gap voltage validation is performed through the Proximitor Sensor output, where the normal operating target relationship is referenced around the -10 VDC gap voltage region. Proper gap setting ensures accurate displacement measurement and prevents signal distortion caused by incorrect probe positioning.
The NSv configuration provides a reduced physical profile for applications requiring smaller target areas and restricted mounting access. The probe and cable design maintain signal integrity by controlling impedance characteristics and reducing electromagnetic interference effects in rotating machinery monitoring circuits.
Frequently Asked Questions
Q: What Proximitor Sensor is required for the 330880-16-00-075-00-02 probe?
A: The probe must be paired with a compatible 3300 XL NSv Proximitor Sensor configured for the matching system length and electrical characteristics.
Q: Can this probe measure both vibration and shaft position?
A: Yes. The eddy-current displacement output provides dynamic vibration measurement and static shaft position measurement when integrated with the appropriate monitoring electronics.
Q: Does the 7.5 m system length require an additional extension cable?
A: No. The -075 configuration represents a 7.5 m total system length designed for direct connection within the specified transducer system configuration.
Field Installation Guidelines
- Install the probe using the specified 3/8-24 UNF mounting interface and maintain mechanical alignment with the target surface.
- Verify probe gap voltage after installation through the connected Proximitor Sensor before placing the machinery into operation.
- Route the coaxial cable away from high-current conductors, ignition sources, and strong electromagnetic interference areas.
- Maintain proper cable bend radius and avoid mechanical stress at the probe tip and cable transition area.
- Connect cable shielding according to the machinery monitoring system grounding practice to reduce electrical noise.
- Confirm target surface condition and material compatibility before final calibration.
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