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Product Introduction
The Bently Nevada 21504-00-08-05-02 is a standard mount proximity probe designed for use in critical machinery condition monitoring systems. As a part of the 7200 Series 8 mm proximity transducer system, this probe is engineered to deliver accurate, reliable measurements of shaft position and vibration in rotating machinery. It is fully compatible with the Bently Nevada monitoring systems and is widely used in power generation, petrochemical, and industrial environments.
This proximity probe is manufactured to stringent standards, ensuring precision alignment, ease of installation, and long-term stability. The probe is encapsulated in a robust stainless steel housing that offers excellent resistance to corrosion and mechanical wear, making it ideal for harsh environments.
Product Specifications
| Parameter | Details |
|---|---|
| Model Number | 21504-00-08-05-02 |
| Series | 7200 8 mm Proximity Transducer System |
| Sensing Range | 0 to 2 mm (80 mils) |
| Linear Range | 0.25 mm to 2.00 mm (10 mils to 80 mils) |
| Probe Tip Diameter | 8 mm |
| Thread Size | 3/8-24 UNF-2A |
| Case Material | AISI 303 Stainless Steel |
| Cable Length | 0.5 meter |
| Connector Type | Miniature coaxial connector (male) |
| Operating Temperature Range | -35°C to +120°C (-31°F to +248°F) |
| Pressure Rating | Up to 500 psi (34 bar) |
| Mounting Style | Threaded with lock nut |
| Weight | 0.23 kg |
| Insulation Resistance | >100 MΩ at 500 VDC |
| Compatible Extension Cable | Bently Nevada 330130 Series |
| Compliance | CE, RoHS compliant |
Product Applications
-
Rotating Machinery Monitoring
Ideal for measuring shaft displacement, vibration, and axial thrust in turbines, compressors, motors, pumps, and gearboxes. -
Power Generation Equipment
Used in gas and steam turbines for real-time monitoring and protection. -
Petrochemical and Refining Plants
Employed in hazardous and high-temperature environments for vibration monitoring. -
Pulp and Paper Industry
Applied in process-critical equipment to avoid unplanned downtime. -
General Industrial Machinery
Suitable for OEM and retrofit installations requiring robust vibration measurement.
Product Advantages
-
High Accuracy and Sensitivity
Delivers precise vibration and displacement measurements over a wide range. -
Proven Field Performance
Trusted for over decades in thousands of critical installations worldwide. -
Robust and Durable Construction
Stainless steel housing ensures high resistance to environmental and mechanical stresses. -
Wide Compatibility
Fully integrates with Bently Nevada 7200 and 3300 monitoring systems. -
Easy Installation and Maintenance
Threaded body and standard cable connector facilitate fast field servicing. -
Low Signal Noise
Provides a clean and reliable signal with minimal interference.
Frequently Asked Questions (FAQ)
-
What is the main function of the 21504-00-08-05-02 proximity probe?
It measures the relative distance between the probe tip and a conductive target such as a rotating shaft, enabling vibration and displacement monitoring. -
Is the probe compatible with the 3300 series monitoring systems?
Yes, it can be used with certain 3300 series systems when properly configured. -
Can this probe operate in hazardous environments?
Yes, the stainless steel construction and design allow it to be used in hazardous and high-temperature areas. -
What is the maximum operating temperature?
The probe operates reliably in temperatures up to +120°C (248°F). -
What is the difference between the 8 mm and 5 mm probe series?
The 8 mm probe offers a wider linear range and is typically used for applications requiring higher accuracy and robustness. -
Is field calibration required after installation?
Generally, factory calibration suffices, but field verification is recommended during commissioning. -
What kind of extension cables are compatible with this probe?
Bently Nevada 330130 series extension cables are compatible. -
How long is the standard cable with the 21504-00-08-05-02 model?
This model comes with a standard 0.5 meter cable. -
What is the expected service life of the probe?
Under normal operating conditions, it can last several years without significant performance degradation. -
Is the probe suitable for OEM machinery design?
Yes, its threaded design and compact form factor make it ideal for integration into OEM systems.
Related Models (Same Series)
| Model | Description | Cable Length | Probe Tip | Thread Size |
|---|---|---|---|---|
| 21504-00-12-05-02 | 7200 8 mm Probe, 12 ft cable | 3.65 m | 8 mm | 3/8-24 UNF-2A |
| 21504-00-06-05-02 | 7200 8 mm Probe, 6 ft cable | 1.83 m | 8 mm | 3/8-24 UNF-2A |
| 21504-00-09-05-02 | 7200 8 mm Probe, 9 ft cable | 2.74 m | 8 mm | 3/8-24 UNF-2A |
| 330104-00-08-10-02-00 | 3300 XL 8 mm Probe, Enhanced performance | 2.0 m | 8 mm | 3/8-24 UNF |
| 330104-00-10-10-02-00 | 3300 XL 8 mm Probe, 3.0 m cable | 3.0 m | 8 mm | 3/8-24 UNF |
| 330104-00-05-10-02-00 | 3300 XL 8 mm Probe, 0.5 m cable | 0.5 m | 8 mm | 3/8-24 UNF |
Popular Models from Bently Nevada
| Model | Description | Application | Cable Length |
|---|---|---|---|
| 330104-00-05-10-02-00 | 3300 XL 8 mm Proximity Probe | Vibration Monitoring | 0.5 m |
| 330130-040-00-00 | 3300 XL Extension Cable | Signal Transmission | 4.0 m |
| 330180-50-00 | 3300 XL NSv Proximity Probe | Narrow Surface Vibration | 5.0 m |
| 330980-50-00 | Velomitor Piezoelectric Velocity Sensor | Low-Frequency Vibration | N/A |
| 330850-50-05 | Acceleration Transducer | General Purpose Vibration | 5.0 m |
| 330400-01-05-10-02-00 | High-Temperature 8 mm Probe | High-Temperature Applications | 5.0 m |
