The Bently Nevada 21504-00-24-10-02 is an 8 mm standard mount eddy current proximity probe used in the 7200 series vibration monitoring system.
It is designed for non-contact measurement of shaft vibration and displacement in critical rotating machinery such as:
- Gas turbines
- Steam turbines
- Compressors
- Pumps
- Generators
It is part of a complete 3-piece transducer system:
Probe + Extension Cable + Proximitor Sensor
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Bently Nevada (GE) |
| Model | 21504-00-24-10-02 |
| Series | 7200 / 3300 XL proximity system family |
| Sensor Type | Eddy current displacement probe |
| Measurement | Shaft vibration / gap / position |
| Probe Diameter | 8 mm |
| Mounting Thread | 3/8-24 UNF |
| Case Length Code | 24 = 240 mm case length |
| Cable Length Code | 10 = 1.0 m cable assembly |
| Connector Code | 02 = miniature coaxial connector |
Physical Characteristics
| Item | Specification |
|---|---|
| Overall Length | ~240 mm case configuration |
| Weight (probe only) | ≈ 0.59 kg ([vendor listing data]) |
| Shipping Weight | ~1.0–2.0 kg (with packaging/cable depending on supplier) |
| Material | Stainless steel probe body |
| Installation | Radial shaft proximity mounting |
System Role
This probe is used to measure the distance between probe tip and rotating shaft surface, producing a voltage proportional to displacement.
It enables monitoring of:
- Shaft vibration amplitude
- Rotor position
- Axial movement (system-dependent setup)
- Eccentricity and dynamic instability
The signal is processed by a Bently Nevada Proximitor sensor, forming a critical part of machinery protection systems.
