Product Overview
The Bently Nevada 21508‑02‑12‑05‑02 7200 8 mm Reverse Mount Probe is a high‑precision proximity sensor engineered for advanced rotating machinery condition monitoring. Part of the respected 7200 probe family, this model features a reverse‑mount design that enables installation in tight spaces or specialized housing arrangements while still delivering accurate vibration and shaft position measurements.
Built for durability and long‑term stability, it provides dependable analog data for condition monitoring systems, helping engineers detect early signs of imbalance, rubbing, misalignment, or bearing distress in critical assets.
Technical Specifications
| Specification | Details |
|---|
| Model | 21508‑02‑12‑05‑02 |
| Series | 7200 Proximity Probe |
| Mount Type | 8 mm Reverse mount (proximity tip extends opposite cable exit) |
| Probe Tip Style | Standard flat tip |
| Probe Cable | 5 m factory‑terminated cable |
| Coil Resistance | ~1050 Ω nominal |
| Coil Inductance | Typically ~345 mH |
| Frequency Response | High‑frequency range suitable for vibration analysis |
| Operating Temperature | ‑40 °C to +120 °C |
| Mounting Thread | M8 × 1.25 (standard 8 mm) |
| Weight | Approx. 0.12 kg |
| Environmental Rating | Industrial duty vibration and thermal performance |
Typical Applications
The 21508‑02‑12‑05‑02 reverse mount probe is specifically useful where space constraints or unique mounting orientations exist. It is widely applied in:
-
Steam and gas turbine shaft vibration and displacement measurement
-
Generator and compressor rotor monitoring
-
Pumps and gearboxes in confined assemblies
-
Condition‑based maintenance systems
-
Machinery health diagnostics with reverse probe positioning
Its reverse‑mount configuration enables signal pickup in challenging mechanical arrangements without sacrificing measurement quality.
Typical Applications
The 21508‑02‑12‑05‑02 reverse mount probe is specifically useful where space constraints or unique mounting orientations exist. It is widely applied in:
-
Steam and gas turbine shaft vibration and displacement measurement
-
Generator and compressor rotor monitoring
-
Pumps and gearboxes in confined assemblies
-
Condition‑based maintenance systems
-
Machinery health diagnostics with reverse probe positioning
Its reverse‑mount configuration enables signal pickup in challenging mechanical arrangements without sacrificing measurement quality.
Technical FAQs
1. What does the 7200 reverse mount probe measure?
It measures shaft position and vibration displacement, providing analog inputs for condition monitoring systems.
2. What is “reverse mount”?
The probe’s sensing tip is oriented opposite to the cable exit, enabling installations where space or geometry restricts normal probe orientation.
3. What is the standard mount thread?
M8 × 1.25, suitable for industry‑standard probe mounting blocks.
4. How long is the attached cable?
This model includes a 5 m factory‑terminated cable.
5. What is the operating temperature range?
‑40 °C to +120 °C for typical industrial environments.
6. Does it require a specific monitor or conditioner?
Yes, it must be used with a compatible proximity monitoring or measurement system.
7. What types of machinery can it monitor?
Turbines, generators, compressors, pumps, and other rotating assets.
8. What maintenance is needed?
Routine inspection for cleanliness, proper mounting, and secure cable connections.
9. Is the probe cable shielded?
Yes, cables are typically shielded to reduce electrical noise.
10. Can this probe detect early mechanical faults?
Yes, it supports early detection of imbalance, misalignment, and other vibration‑related issues.
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