Overview
The Bently Nevada 330901-00-40-10-02-05 (3300 NSv Proximity Probe) provides eddy-current displacement measurement for the 3300XL NSv Proximity Transducer System, with a 1/4-28 UNF threaded sensor body and miniature coaxial ClickLoc connector cable interface.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330901-00-40-10-02-05 |
| Brand | Bently Nevada |
| Product Type | Proximity Sensors |
| Origin | USA |
| Weight | 0.05 kg |
| Dimensions | Estimated shipping size: 1.2 x 1 x 117 cm |
| Power Consumption | Supplied through compatible 3300XL NSv Proximity Transducer System |
| Probe Series | 3300 NSv Proximity Probe |
| Thread Type | 1/4-28 UNF |
| Armor Option | Without armor |
| Unthreaded Length | 0.0 in |
| Overall Case Length | 4.0 in |
| Total Cable Length | 1.0 meter (39 in) |
| Connector Type | Miniature coaxial ClickLoc connector standard cable |
| Agency Approval | Multiple approvals |
| Scale Factor | 7.87 V/mm (200 mV/mil) |
| Linear Range | 1.5 mm (60 mils) |
Eddy-Current Measurement and Rotor Dynamics Characteristics
The 330901-00-40-10-02-05 uses eddy-current probe technology to measure shaft displacement without physical contact. The probe generates proportional output signals based on the target surface distance, allowing the connected monitoring system to evaluate radial vibration, axial position, tachometer signals, and phase reference inputs.
The probe applies a standard eddy-current scaling factor of 7.87 V/mm (200 mV/mil). Therefore, the system can interpret displacement changes through the probe gap voltage relationship. During commissioning, technicians validate probe installation by checking the gap voltage, with -10 VDC target values commonly used for Bently Nevada eddy-current transducer calibration.
The compact NSv design reduces installation restrictions in applications requiring side-view or rear-view clearance limitations. Additionally, the smaller probe tip supports measurements on shafts smaller than 51 mm (2 in) and flat axial targets smaller than 15 mm (0.6 in).
Frequently Asked Questions
Q: What measurement signals can the 330901-00-40-10-02-05 provide?
A: The probe supports radial vibration, radial position, axial position, tachometer, zero speed, and Keyphasor phase reference measurements when connected to compatible Bently Nevada monitoring systems.
Q: How does the 3300 NSv probe differ from standard 3300XL 5 mm and 8 mm probes?
A: The 3300 NSv probe provides a smaller physical structure and improved installation flexibility. However, it uses a shorter 1.5 mm (60 mils) linear range compared with standard 3300XL 5 mm and 8 mm systems.
Q: What installation checks should technicians perform after mounting the probe?
A: Technicians should verify mechanical clearance, threaded engagement, cable routing, connector installation, and probe gap voltage before placing the monitoring channel into service.
Field Installation Guidelines
- Install the 330901-00-40-10-02-05 probe with correct 1/4-28 UNF threaded engagement to maintain mechanical stability.
- Keep the probe tip aligned with the target surface to prevent measurement errors caused by angular positioning.
- Route the miniature coaxial cable away from high-current power cables and strong electromagnetic interference sources.
- Maintain proper cable shielding practices and connect the shield according to the monitoring system grounding requirements.
- Verify the probe gap voltage after installation before performing vibration or position measurements.
- Confirm that the target surface condition meets eddy-current measurement requirements, including suitable conductivity and surface stability.
- Avoid excessive cable bending near the ClickLoc connector area to prevent mechanical stress on the signal path.
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