Bently Nevada 330905-00-25-05-12-CN 3300 NSv Proximity Probe
Bently Nevada 330905-00-25-05-12-CN 3300 NSv Proximity Probe
The Bently Nevada 330905-00-25-05-12-CN is a 3300 NSv proximity probe designed for non-contact shaft vibration and position measurement. It is intended for applications where standard proximity probe systems cannot be installed due to limited space, small shaft diameters, or restricted mounting clearances. The probe operates as part of a 3300 NSv eddy-current proximity transducer system and provides a linear output proportional to the distance between the probe tip and the conductive target.
Product Features
The 3300 NSv probe uses eddy-current sensing technology to monitor the relative position of rotating machinery components without physical contact. Changes in the distance between the probe tip and the target surface are converted into proportional electrical signals for vibration and displacement monitoring.
Its compact probe design allows installation in locations where conventional proximity probe systems may not fit. This makes the probe suitable for small rotating equipment, auxiliary machinery, and applications with limited available mounting space.
The specified linear measurement range of 0.15 mm to 1.2 mm enables accurate tracking of shaft motion within the calibrated operating region. Maintaining operation within this range is important to preserve specified sensitivity and measurement accuracy.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 330905-00-25-05-12-CN |
| Brand | Bently Nevada |
| Product Type | 3300 NSv Proximity Probe |
| Measurement Range | 0.15 mm to 1.2 mm linear range |
| Sensitivity | 200 mV/mil nominal (approximately 7.87 mV/um) |
| Cable Length | 2.5 m |
| Operating Temperature | -51 deg C to +177 deg C |
| Measurement Principle | Eddy-current, non-contact displacement measurement |
| Application | Rotor vibration and shaft position measurement |
Measurement Performance
The probe provides a nominal sensitivity of 200 mV/mil, allowing small shaft movements to be detected and converted into usable monitoring signals. Combined with compatible extension cable and proximity sensor electronics, the probe supports continuous condition monitoring of rotating machinery.
Because the sensing principle is based on electromagnetic coupling rather than mechanical contact, the probe does not introduce wear to the monitored shaft surface and can measure dynamic vibration as well as static position changes.
Application Considerations
This model is commonly selected for machinery that requires vibration and position monitoring in restricted installation areas. Typical measurement tasks include radial vibration monitoring, shaft displacement measurement, and observation of rotor dynamic behavior.
Proper system performance depends on using the probe within a compatible 3300 NSv transducer system configuration and maintaining the calibrated target gap specified for the measurement range.
Frequently Asked Questions
Q: What is the primary purpose of the 330905-00-25-05-12-CN probe?
A: It is used for non-contact measurement of rotor vibration and shaft position. The probe detects changes in the distance between the probe tip and a conductive target surface using eddy-current technology.
Q: What is the linear measurement range of this probe?
A: The specified linear range is 0.15 mm to 1.2 mm. Measurements taken within this range provide the calibrated response of the probe system.
Q: Is this probe intended for installations with limited space?
A: Yes. The 3300 NSv series is designed for applications involving small shafts and restricted mounting clearances where larger proximity probe assemblies may not be suitable.
Bently Nevada 330905-00-25-05-12-CN 3300 NSv Proximity Probe
