製品紹介
The Bently Nevada 21508-02-12-05-02 is a reverse-mount proximity probe designed for high-precision non-contact measurement / shaft vibration and position in rotating machinery. As part / the renowned 3300 XL series, this 8mm eddy current sensor is specially engineered for applications where front access to the machine shaft is restricted or impossible.
It is commonly paired with matching extension cables and proximity transducers (Proximitor® sensors) to form a complete measurement chain. Designed with robustness, linear accuracy, and environmental resilience, the 21508-02-12-05-02 is a trusted solution in industries such as oil & gas, power generation, and heavy equipment manufacturing. This reverse-mount configuration is particularly valuable in tight, enclosed, or high-temperature machinery environments.
製品仕様
| Specification | Details |
|---|---|
| モデル | 21508-02-12-05-02 |
| Probe Type | Reverse Mount Proximity Probe |
| Tip Diameter | 8 mm |
| Mounting Type | Reverse Threaded Mounting |
| Sensing Technology | Eddy Current (Non-contact displacement measurement) |
| Total Length | 0.5 meter |
| Measurement Range | 2 mm nominal, linear up to 2.5 mm |
| Output Signal | Analog voltage (via Proximitor module) |
| Cable Connector | Coaxial, 10-32 UNF |
| Material | Stainless Steel (probe body and tip) |
| Environmental Protection | IP65 Rated |
| Operating Temperature | -35°C to +120°C |
| Storage Temperature | -50°C to +150°C |
| Frequency Response | 0 to 10 kHz |
| Linearity | ±1% / full-scale output |
| Electrical Isolation | Ground-isolated |
| Compliance | API 670 Compliant, CE Certified |
| 重量 | 0.22 kg |
Applications
The 21508-02-12-05-02 Reverse Mount Probe is a purpose-built solution for scenarios where standard front-mount probes are unsuitable or physically obstructed. This makes it indispensable in a variety / high-performance industrial sectors:
-
Steam & Gas Turbines
Reverse mounting is /ten required in bearing housings or turbine enclosures where space is restricted or sealed. -
Compressors
Used in centrifugal and reciprocating compressors to monitor shaft displacement and rotor dynamics. -
Pumps and Motors
Ideal for enclosed motors or submerged pumps where only rear access to the shaft is available. -
Gearboxes and Speed Reducers
Enables accurate monitoring / gear shaft vibration and alignment without disturbing the housing. -
High-Speed Rotating Equipment
Ensures precision in dynamic environments where traditional probes may face physical damage or interference. -
OEM Machinery Integration
Preferred by machine builders who require compact, internally mounted monitoring solutions.
Product Advantages
The Bently Nevada 21508-02-12-05-02 proximity probe /fers several technical and operational advantages:
-
Reverse Mount Design
Enables installation in challenging layouts, such as sealed or rear-access housings. -
Robust Construction
Made with high-grade stainless steel, the probe is corrosion-resistant and suitable for harsh environments. -
High Accuracy and Linearity
Offers consistent and precise measurements with minimal deviation across its full range. -
Wide Compatibility
Easily integrates with Bently Nevada 3300 XL Proximitor modules and extension cables. -
API 670 Compliance
Meets industry-standard specifications for critical machinery protection. -
Reliable in Harsh Environments
With an IP65 rating and broad operating temperature range, it performs reliably in dusty, humid, or high-temperature locations. -
Easy Maintenance
Modular design enables simple probe replacement without disturbing other system components. -
Low Signal Noise
優良 EMI shielding ensures accurate readings even in electrically noisy environments. -
Long-Term Stability
Maintains calibration and accuracy over long operating lifespans, reducing maintenance frequency. -
Trusted ブランド
Manufactured by Bently Nevada, a global leader in condition monitoring and vibration sensing technologies.
よくある質問 (FAQ)
-
What is a reverse mount proximity probe?
– A reverse mount probe is designed to be installed from the opposite side / the shaft, ideal for restricted or enclosed areas. -
Is this probe compatible with the 3300 XL Proximitor modules?
– Yes, it is fully compatible with Bently Nevada’s 3300 XL series Proximitor 台s. -
What is the measurement range / the 21508-02-12-05-02?
– It has a nominal range / 2 mm with a linear operating range up to 2.5 mm. -
Can I use this probe in high-temperature environments?
– Yes, it operates reliably between -35°C to +120°C, and can be stored at up to +150°C. -
What’s the difference between this and a standard front-mount probe?
– This model is mounted from the rear or side, /fering installation flexibility in inaccessible or confined areas. -
What is the environmental protection rating / this probe?
– It has an IP65 rating, protecting against dust and low-pressure water jets. -
What type / signal does the probe output?
– The probe itself works with a Proximitor module to produce an analog voltage signal proportional to shaft displacement. -
Can this be used in hazardous or explosive environments?
– With appropriate system-level certifications and accessories, it can be used in ATEX-rated environments. -
Is this probe part / a system or standalone?
– It is part / a three-component system: probe, extension cable, and Proximitor. -
How is the probe installed?
– It is mounted via a reverse-threaded insert, secured from the internal side / the equipment housing.
Related モデルs in the Same Series
| モデル Number | 説明 | Key Feature |
|---|---|---|
| 21508-02-05-05-02 | 8mm Reverse Mount Probe (Shorter Length) | Compact variant for space-constrained installs |
| 21508-02-30-05-02 | 8mm High-Temp Reverse Mount Probe | Suitable for up to 200°C |
| 330105-02-12-10-02-05 | 8mm Reverse Mount Standard Probe | Alternate configuration for moderate temperatures |
| 330105-02-05-10-02-00 | 8mm Reverse Mount Probe | Balanced for dynamic shaft monitoring |
| 21508-01-12-05-02 | 5mm Reverse Mount Probe | Designed for smaller machinery with limited space |
| 330106-05-30-10-02-05 | 8mm Reverse Probe with Shielded Cable | EMI-hardened version for high-voltage areas |
Popular Bently Nevada モデルs
| モデル Number | 説明 | Primary Application |
|---|---|---|
| 3500/42M | Vibration Monitoring Module | Real-time protection for rotating machinery |
| 3500/15 | Power Supply Module for 3500 Rack | Modular power source for Bently Nevada systems |
| 3300 XL 5mm Probe | Proximity Sensor for General Monitoring | Compact and accurate shaft vibration sensing |
| 330500-02-05 | Piezoelectric Accelerometer | High-sensitivity vibration sensor for structures |
| 3500/22M | Keyphasor Module | Detects shaft position and rotation speed |
| 330103-00-05-10-02-00 | 5mm Proximity Probe | Standard forward-mount probe for general use |
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