ProductPRODUCT
Featured products
Contact Us
- Bently Nevada
- 86691-02150-0400-15
- Proximity Probe
- USA
- Optional
- 3 kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 7
Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| [email protected] | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |
Product Overview
The Bently Nevada 86691-02150-0400-15 Proximity Probe is a legacy proximity-sensing component used in non-contact machinery monitoring applications. Proximity probes measure the position of a conductive target relative to the probe tip, allowing a monitoring system to track shaft displacement without physical contact with the rotating surface.
On a turbine, compressor, pump, or motor, a proximity probe can be installed near a shaft to monitor changes in shaft position or vibration. The resulting measurement helps maintenance personnel identify changes in machine behavior, assess operating conditions, and investigate potential mechanical problems before they develop into more serious faults.
The probe functions as part of a complete measurement channel rather than as a standalone monitoring device. Its operation depends on the corresponding extension cable, signal-conditioning equipment, target material, mounting arrangement, and monitor input. These components must be matched as a system to maintain the intended measurement characteristics.
For replacement work, the complete part number is particularly important. Probe dimensions, mounting thread, integral cable configuration, connector type, and electrical compatibility determine whether a replacement can be installed in the existing machine without changing the established measurement arrangement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Model | 86691-02150-0400-15 |
| Product Type | Proximity Probe |
| Product Family | 86691 Legacy Proximity Probe |
| Measurement Principle | Non-contact eddy-current sensing |
| Measurement Application | Shaft displacement, vibration, and position monitoring |
| Target Type | Conductive material |
| Total Length | Optional |
| Shipping Weight | 3 kg |
Product Features
- Non-contact measurement: Detects changes in the position of a conductive target without touching the rotating shaft.
- Machinery condition monitoring: Supports shaft displacement and vibration measurement applications.
- Continuous measurement: Supplies position-related information to the associated monitoring channel during machine operation.
- System-based operation: Works with matched signal-conditioning equipment and the appropriate cable arrangement.
- Legacy equipment application: Relevant to maintenance and replacement requirements for existing Bently Nevada installations.
- Configuration-sensitive replacement: Requires attention to the probe’s mechanical dimensions, connector, cable arrangement, and complete ordering reference.
Working Principle
The 86691-02150-0400-15 uses the eddy-current principle associated with proximity measurement. The probe tip generates an electromagnetic field when operated with its compatible signal-conditioning unit. When a conductive shaft or target approaches the probe, the electromagnetic interaction changes according to the distance between the target and the probe tip.
The signal-conditioning equipment converts this change into an electrical output representing the target’s relative position. As the shaft moves during operation, the measurement changes accordingly. Monitoring equipment can use the resulting signal to assess shaft vibration, relative displacement, or position, depending on the installed measurement channel.
The complete signal path is:
Conductive Shaft Target → Proximity Probe → Matching Cable → Signal Conditioner → Monitoring System
The probe does not independently calculate vibration severity or issue machinery protection commands. Those functions depend on the signal-conditioning and monitoring equipment connected to it. Correct probe gap, target material, cable configuration, and system calibration are therefore essential to obtaining meaningful measurements.
Role in a Machinery Protection and Monitoring Architecture
The 86691-02150-0400-15 acts as the sensing element at the machine. It detects changes in the distance between the probe tip and a conductive target, while the associated electronics convert the probe response into a usable measurement for the monitoring system.
| System Element | Function |
|---|---|
| 86691-02150-0400-15 Proximity Probe | Detects relative movement or position of the conductive target |
| Matching Extension Cable | Connects the probe to the associated signal-conditioning equipment |
| Proximitor or Signal Conditioner | Supplies the excitation and conditions the probe signal |
| Monitoring System | Processes the measurement for display, trending, alarms, or protection functions according to configuration |
| Conductive Shaft Target | Provides the surface whose relative position is measured |
| Probe Mounting Arrangement | Maintains the required probe position and mechanical clearance |
A replacement probe must match the original measurement system’s electrical characteristics and mechanical installation. Selecting a probe solely because it belongs to the same brand or general product category is not sufficient.
Industrial Applications
| Application | Typical Use |
|---|---|
| Steam Turbines | Monitoring relative shaft movement and vibration |
| Gas Turbines | Measuring shaft position changes within a compatible monitoring arrangement |
| Centrifugal Compressors | Tracking shaft displacement for machinery condition assessment |
| Industrial Pumps | Monitoring shaft movement where proximity measurement is part of the installed system |
| Electric Motors | Measuring shaft position or vibration on suitably configured machinery |
| Generators | Providing shaft-related measurements for condition monitoring |
| Rotating Machinery Maintenance | Replacing an installed probe while preserving the existing measurement arrangement |
| Machinery Protection Systems | Supplying a probe signal to a compatible monitoring channel |
Installation and Maintenance
- Verify the complete part number: Confirm that 86691-02150-0400-15 matches the installed probe reference before beginning replacement work.
- Inspect the existing probe: Record the probe’s physical construction, mounting arrangement, cable configuration, and connector before removal.
- Check mounting dimensions: Verify the probe tip, thread, case geometry, and available mounting clearance against the existing installation.
- Confirm system compatibility: Match the probe with the installed extension cable, signal conditioner, and monitoring input.
- Inspect the probe tip: Check for physical damage, contamination, or wear that could affect installation or measurement.
- Check the target surface: Confirm that the measured surface is suitable for the proximity system and that its material matches the system’s calibration requirements.
- Set the probe gap correctly: Establish the required operating gap according to the applicable system specifications.
- Route the cable carefully: Avoid sharp bends, excessive tension, hot surfaces, and locations where vibration could damage the cable or connector.
- Secure the connections: Ensure that connectors and terminations are correctly seated and protected from accidental movement.
- Verify the signal after installation: Check the probe output and monitoring-system indication before returning the equipment to normal operation.
- Investigate abnormal readings systematically: Check probe gap, target condition, cable continuity, connector condition, signal conditioning, and configuration before replacing additional components.
- Record the final configuration: Document the probe reference, installed location, associated cable, signal conditioner, and monitoring channel for future maintenance.
Related Components
| Component | Function |
|---|---|
| Matching Extension Cable | Carries the probe signal to the compatible signal-conditioning unit |
| Proximitor Sensor or Signal Conditioner | Excites the probe and converts its response into a usable electrical signal |
| Machinery Monitoring System | Processes the signal for measurement, trending, alarm, or protection functions |
| Probe Mounting Hardware | Holds the probe in the required position relative to the shaft |
| Conductive Shaft Target | Provides the surface monitored by the proximity probe |
Recommended Related Models
| Model / Product Family | Product Type | Application |
|---|---|---|
| Bently Nevada 86691 Series | Legacy Proximity Probe Family | Reference for identifying the existing probe configuration |
| Bently Nevada 9200 | Seismoprobe Velocity Transducer | Alternative vibration-sensing technology for applications requiring velocity measurement rather than proximity displacement measurement |
| Bently Nevada 3300 Series Proximity Monitoring Equipment | Proximity Monitoring Equipment | Related monitoring product family; exact probe compatibility depends on the installed configuration |
| Bently Nevada 3500 Series Monitoring System | Machinery Protection and Monitoring System | Monitoring platform for suitably configured proximity measurement channels |
Key Advantages
- Non-contact sensing of conductive shaft targets.
- Supports shaft displacement and vibration monitoring applications.
- Integrates into a complete probe, cable, signal-conditioning, and monitoring channel.
- Useful for maintenance and replacement of legacy machinery monitoring installations.
- Helps preserve existing measurement arrangements when the replacement configuration is correctly matched.
Technical FAQs
What does the Bently Nevada 86691-02150-0400-15 measure?
It is used for non-contact measurement of a conductive target’s relative position. In a suitable machinery monitoring arrangement, changes in the measured position can be used to assess shaft displacement or vibration.
Does the proximity probe work without a signal conditioner?
No. An eddy-current proximity probe requires compatible signal-conditioning electronics to excite the probe and interpret its response. The probe, cable, signal conditioner, and monitoring input must be matched for the intended measurement.
Can the 86691-02150-0400-15 replace another Bently Nevada proximity probe?
Not automatically. Replacement suitability depends on the probe’s mechanical dimensions, mounting thread, electrical characteristics, connector, cable arrangement, target material, and compatibility with the installed signal conditioner and monitor.
What should be checked if the measured shaft position becomes unstable?
Inspect the probe mounting and gap, target surface, cable and connectors, signal-conditioning unit, and monitoring configuration. Changes in these areas can affect the measurement. Compare the signal with the system’s expected operating behavior before deciding which component requires replacement.